WO2001071094A1

WO2001071094A1 - Hardened body, and method and device for manufacturing the hardened body

Info

Publication number: WO2001071094A1
Application number: PCT/JP2001/002245
Authority: WO
Inventors: Yoshiya Matsuno; Kenji Sato; Satoshi Ogawa; Toshihiro Nomura
Original assignee: Ibiden Co., Ltd.
Priority date: 2000-03-21
Filing date: 2001-03-21
Publication date: 2001-09-27
Also published as: EP1197597A1

Abstract

A hardened body manufacturing device, comprising a raw material conditioning mechanism (10) for conditioning paper-making sludge to generate slurry (14), a paper-making mechanism (20) having a transfer belt (23) allowing a sheet body made of the slurry (14) by wire cylinders (22A), (22B), and (22C) to be adhered thereto and transferring the sheet body, a reversal device (40), a press (50) for dewatering the sheet body by pressuring, and a dryer (60), wherein a suction box (24) is installed on the rear surface of the transfer belt (23) formed of felt so as to suck the belt by a vacuum pump (17) for dewatering, whereby water content in the sheet body can be reduced efficiently.

Description

Description Hardened body, method for manufacturing hardened body, and apparatus for manufacturing hardened body

The present invention relates to a cured product, a method for producing a cured product, and a device for producing a cured product which can mass-produce a high-brightness cured product obtained by solidifying papermaking sludge into a plate shape. Background art

In recent years, from the viewpoint of global environmental protection, effective use of various industrial wastes has been studied. For example, in the construction industry, which has consumed large amounts of forest resources, it has been proposed to reduce the consumption of forest resources by newly seeking construction materials for industrial waste. On the other hand, it is required to realize low cost and high functionality of inorganic boards, such as calcium silicate board, perlite board, slag gypsum board, wood chip cement board and gypsum board, which have been used conventionally.

The present inventors have disclosed a technology for producing a cured product that can be effectively used as a building panel or the like, after dewatering and pressing papermaking sludge generated after the production of paper, and then curing by drying. It is proposed as No. 3 5 2 5 8 6.

The inventor has shown in the above patent that a cured product can be obtained by curing papermaking sludge, but it was not possible to produce a cured product that would be profitable. In order to actually mass-produce the cured product, it was first necessary to establish a technology for gradually reducing the water content of the obtained paper containing a large amount of water.

Also, papermaking sludge is colored by the influence of ink and pulp impurities.In the dehydration press method, impurities remain in the cured product as it is and the brightness of the cured product is reduced. There was a problem that could not be done.

The present invention has been made to solve the above-described problems, and a first object of the present invention is to provide a method and an apparatus for producing a cured body capable of efficiently mass-producing the cured body from papermaking sludge. To provide.

The first object is to provide a cured product having high brightness. The dewatering press method is inferior in mass productivity. In order to solve such a problem, Japanese Patent Laid-Open No. 49-114,628 discloses that a mixture of papermaking sludge and cement diluted to a solid content of 3% is formed on a rotating drum, and this drum surface is formed. Is transferred to a belt-like blanket, dewatered and pressed, and further increased in layer thickness by a take-up roll, then cut and conveyed.

On the other hand, Japanese Patent Application Laid-Open No. 59-1566956 discloses a paper making method using a round wire mesh, and discloses a technique of forming a mat one by one and forming a multilayer.

However, it has been found that the strength of such a papermaking method varies.

Further, in WO 00/79052, papermaking is performed using papermaking sludge diluted to a solid content of 3% according to a known technique, and the same problem as in the prior art occurs.

The present invention has been made to solve the above-described problems, and a second object is to provide a method for manufacturing a cured body that can efficiently mass-produce the cured body from papermaking sludge and reduce the variation in strength. An object of the present invention is to provide an apparatus for manufacturing a cured body. The inventor of the present invention has shown in Japanese Patent Application No. 10-35 25 86 that a hardened body can be obtained by hardening papermaking sludge, but the obtained hardened body has uneven density. Was big. In order to produce a cured product that can be used for industrial applications, it was necessary to establish technology for producing a highly dense and homogeneous cured product.

Japanese Patent Application Laid-Open No. Sho 49-1141462 discloses that an organic content of 200 mesh or less is preferable. However, with this technique, there was a problem that the brightness of the formed molded article was low. Japanese Patent Application Laid-Open No. 59-1566956 discloses a papermaking method using a round wire mesh.Matsu is made one by one to form a multilayer, but the round wire mesh used is , From 250 to 10 mesh, which is also low in brightness.

The present invention has been made to solve the above-described problems, and a third object is to provide a method of manufacturing a cured body capable of efficiently mass-producing a high-density cured body from papermaking sludge, and a cured body. To provide a manufacturing apparatus. In the above-mentioned Japanese Patent Application Laid-Open No. 49-11414628, the obtained product is not uniform, and problems such as peeling and warping have occurred. Also, Japanese Patent Application Laid-Open No. 59-1566956 discloses a papermaking method using a round wire mesh. However, it is a method in which mats are formed one by one and multilayered, resulting in poor efficiency.

The present invention has been made in order to solve the above-mentioned problems, and a fourth object is to provide a cured product that can efficiently mass-produce a uniform cured product in the thickness direction and in-plane from papermaking sludge. An object of the present invention is to provide a manufacturing method and a device for manufacturing a cured body. In the above-mentioned Japanese Patent Application Laid-Open No. 49-1141628, cutting with a take-up roll requires a cutting tool such as a power cutter, which is inferior in productivity and has problems with safety. .

A fifth object of the present invention is to solve the above-mentioned problems, and a fifth object of the present invention is to provide a method for producing a cured product capable of efficiently and safely mass-producing a cured product from papermaking sludge and a method for producing the cured product. It is to provide a device. Also, as in Japanese Patent Application Laid-Open Nos. 49-114, 1988 and 59-156, 566, when a paper is wound, stress remains inside and the paper is dried after lamination. As a result, there arises a problem that the cured product is warped and delaminated.

The present invention has been made to solve the above-mentioned problems, and a sixth object of the present invention is to provide a method and an apparatus for producing a cured body capable of producing a cured body without warpage from papermaking sludge. Is to provide. The inventor of the present invention has disclosed in Japanese Patent Application No. 10-3255256 that a hardened product can be obtained by hardening papermaking sludge, but the obtained hardened product has a specific gravity and The variation in strength was large. In order to produce a cured product that can be used for industrial applications, it was necessary to establish a technology for producing a cured product with a uniform specific gravity.

The present invention has been made to solve the above-mentioned problems, and a seventh object of the present invention is to provide a method for producing a cured product capable of mass-producing a cured product having a uniform specific gravity from papermaking sludge. Further, in the above-mentioned Japanese Patent Application Laid-Open No. 49-114648, there was a problem that the formed molded article was cut off during transportation.

On the other hand, Japanese Patent Application Laid-Open No. 59-1566956 discloses a papermaking method using a round wire mesh, in which a mat is formed one by one and multilayered. Raising the mat caused a problem that the mat would break.

In other words, the present inventor further studied to actually mass-produce the cured product, and it became clear that it was difficult to handle a paper-made product made from papermaking sludge after forming it into a predetermined shape. It was. That is, after forming a paper-formed article formed from papermaking sludge into a predetermined shape for forming a cured product, the paper-shaped article contains a large amount of water, and thus it has been difficult to handle the paper-shaped article without breaking its shape.

The present invention has been made in order to solve the above-described problems, and an eighth object thereof is to provide a method for manufacturing a cured product which facilitates handling of a papermaking product and enables mass production of a cured product from papermaking sludge. It is in. The inventor of the present invention has disclosed in Japanese Patent Application No. 10-3255256 that a hardened product can be obtained by hardening papermaking sludge, but can be widely used for industrial applications and practically. The strength could not be obtained. As a method of increasing the strength of the present inventor S, as a method of increasing the strength, the idea was to pressurize the paper made from papermaking sludge, and based on the results of the experiment, the strength of the cured body was increased by increasing the applied pressure. I was able to do it. However, it was found that as the pressure was increased, the papermaking body was easily broken at the time of pressurization, and the yield was reduced.

The present invention has been made to solve the above-mentioned problems, and a ninth object is to provide a method and an apparatus for producing a cured product capable of producing a high-strength cured product from papermaking sludge. To provide. Disclosure of the invention

In order to achieve the first object described above, the cured product according to claim 1 of the present invention is obtained by forming and curing papermaking sludge, and each oxide of Si, A1, and Ca A cured product containing an organic fibrous material composed of a polysaccharide and calcium carbonate in an inorganic amorphous material composed of the following, wherein the amount of Ca, A, and Si in the cured product is: Each _{C a 0, A 1 2 O} 3, S i 0 2 in terms of C a O / S i 0 ₂ from the ratio 0. 2 7. 9, C a OZA 1 2 O ₃ ratio is 0.2 This is a cured product adjusted to 12.5. The lightness of this cured product is N5 or more as a value based on the provisions of JISZ8721.

In order to achieve the seventh object, in the cured product according to the fifth aspect, papermaking sludge is formed and cured to form an inorganic amorphous material composed of oxides of Si, Al, and Ca. an organic fibrous material and a cured body comprising a carbonate Karushiumu consisting polysaccharides, C a in the cured body, a 1, the amount of S i are respectively _{C a 0, a 1 2 0} 3, the ratio of S i O ₂ in terms of C a O / S i 0 ₂ ratio 0.2 from 7. 9, C a O / a 1 2 0 3 is adjusted from 0.2 to 1 2.5, It is characterized in that it contains a coagulant. With such a configuration, variations in specific gravity and strength can be improved, and warpage can be eliminated.

It is desirable that the raw material solution does not contain any cement or contains 30% by weight or less of cement in the solid content. The inclusion of cement improves papermaking properties, but causes a decrease in strength and a decrease in lightness. 30% by weight is the upper limit.

In the cured product of the present invention, papermaking sludge is formed and cured, and organic fibrous substances and polycarbonates composed of polysaccharides are contained in an inorganic amorphous substance composed of oxides of Si, A1, and Ca. a cured product comprising a force Rushiumu, C a in the cured product, the amount of a 1, S i, respectively in terms of _{C a 0, a 1 2 0} 3, S i O 2 C a oZS i 0 ₂ from the ratio 0.2 7.9, the ratio of _{C a O / a 1 2 0} 3 is a cured body that is adjusted from 0.2 to 1 2.5. The lightness of this cured product is N5 or more as a value based on the provisions of JISZ8721. The amount of these C a, A l, S i (C a 0, A 1 2 0 3, S i 0 2 equivalent amount) is located in a total amount of C a, A 1, S i in the composite cured body For example, if it is Ca, it means the amount of calcium carbonate and the total amount of Ca in the inorganic amorphous material. Moreover, beyond the C a OZS i 0 ₂ ratio 0.2, 7. 9 below, C a OZA 1 ₂ 0 ₃ ratio exceeds the 0.2, 1 2. hardened body is adjusted to 5 or less It is best to have.

In order to achieve the eighth object, in the cured product according to claim 6, a papermaking sludge is formed and cured, and an inorganic amorphous material composed of oxides of Si, A1, and Ca is provided. An organic fibrous material and a cured body comprising a carbonate force Rushiumu consisting polysaccharides in the amount of C a, A 1, S i in the cured product, respectively C a 0, A 1 ₂ 0 _3, are adjusted S i O ₂ in terms of C a OZ S i 0 ₂ ratio 0.2 from 7. 9, C a / a 1 2 0 3 ratio to zero. 2 to the 1 2.5 Characterized by containing synthetic fibers. With such a configuration, the bending strength and the fracture toughness value can be improved.

It is preferable that the raw material solution does not contain any cement, or contains 30% by weight or less of cement in the solid content. The inclusion of cement improves papermaking properties, but causes a decrease in strength and a decrease in lightness. 30% by weight is the upper limit.

In order to achieve the first object described above, a method for producing a cured product according to claim 7 includes the steps of: forming a raw material solution containing papermaking sludge by using a filter body; and attaching a papermaking sludge paper body to the surface of the filter body. At the same time, the paper is transferred to a conveyor belt after being transferred, cut into a predetermined size, and the paper is cured to obtain a cured papermaking sludge. For this reason, a hardened body can be efficiently mass-produced from papermaking sludge.

In order to achieve the above-mentioned second object, the method for producing a cured product according to claim 8 is characterized in that a raw material solution containing papermaking sludge is formed using a rotating drum having a rotation speed of 1 to 100 times, The papermaking sludge paper is adhered to the surface of the rotating drum, and the paper is transferred to a conveyor belt and then transferred and cut into a predetermined size.The papermaking body is hardened to obtain a hardened papermaking sludge. . For this reason, the cured product can be efficiently mass-produced from papermaking sludge.

If the rotation speed of the rotating drum is less than one rotation, the paper is oriented in the thickness direction of the paper and the strength is varied.If the rotation speed exceeds 100 rotations, the fiber is oriented in the rotation direction and the strength is reduced. Vary.

In order to achieve the third object described above, the method for producing a cured product according to claim 9 is a method for producing a raw material solution containing paper sludge using a filter body having a network structure of # 40 to 150. A papermaking sludge paperwork is attached to the surface of the drainage body, and the papermaking paper is transferred to a conveyor belt and then transferred, cut into a predetermined size, and the paperwork is hardened to obtain a hardened papermaking sludge. For this reason, it is possible to make a papermaking product from a raw material solution with high efficiency, and it is possible to efficiently mass-produce a high-density cured product from papermaking sludge. It works. Here, if the mesh is coarser than # 40, only the inorganic non-crystalline material is removed from the raw material solution, and the density and strength of the cured product are reduced. On the other hand, if the mesh is finer than # 150, the removal of water becomes worse, and it becomes impossible to make a papermaking product from the raw material solution with high efficiency. In addition, voids reduce the density due to residual moisture.

In order to achieve the fourth object described above, a method for producing a cured product according to claim 10 uses a rotating drum made of a mesh of a raw material solution containing paper sludge having a solid content of 3.5 to 25% by weight. The papermaking sludge is attached to a rotating drum made of the net-like body, and the papermaking body is transferred to a conveyor belt and then transferred, cut into a predetermined size, and the papermaking body is cured and hardened. Obtain a cured sludge. For this reason, the papermaking property from papermaking sludge is improved, and the cured product can be efficiently mass-produced. That is, when the concentration is less than 3.5%, the concentration is too low, and it takes time to secure the thickness. In addition, as the time elapses, the concentration decreases, and the uniformity in the thickness direction decreases. If it exceeds 25%, the in-plane uniformity of the product decreases. For this reason, warpage occurs due to drying.

In order to achieve the first object described above, the method for producing a cured product according to claim 11 is characterized in that a raw material solution containing papermaking sludge is formed using a filter body, and papermaking sludge is formed on the surface of the filter body. At the same time as adhering the paper, the paper is transferred to a conveyor belt at a speed of 5 to 8 OmZ and then transferred, cut into a predetermined size, and the paper is hardened to obtain a hardened papermaking sludge. Since the transport speed of the transport belt is 5 to 80 minutes, it is possible to efficiently produce a paper having an appropriate thickness from the raw material solution, and it is possible to mass-produce the cured product from paper sludge efficiently. Here, if the transport speed of the transport belt is lower than 5 mZ, the paper can be made thicker, but the papermaking efficiency is low and the thickness becomes uneven. On the other hand, if the transport speed exceeds 8 OmZ, the paper body becomes thinner, making it difficult to obtain a uniform thickness, and the paper body may be cut off, and the thickness is uneven.

In order to achieve the first object, a method for producing a cured product according to claim 12 is characterized in that a raw material solution containing a papermaking sludge is made using a rotating drum made of a mesh, and papermaking sludge is made on the rotating drum surface. At the same time, the paper is transferred to a transport belt of a porous body having continuous pores, and water is removed from the paper while being transported by the transport belt, and then cut into a predetermined size. Hardened body and hardened paper sludge Get. Since the paper is dewatered while being conveyed by the conveyor belt, the moisture in the paper can be efficiently reduced, and the cured product can be mass-produced. In particular, a hardened body is manufactured by making a paper using a mesh-shaped rotating drum, and impurities are dropped from the mesh, so that the impurities can be reduced and the brightness can be increased. In particular, since impurities and ink can be removed during dehydration while being conveyed by a conveyor belt, it is optimal for increasing brightness. Further, a cured product comprising calcium carbonate, C a in the cured product, the amount of A and S i is, their respective _{C a 0, A 1 2 0} 3, the S i 0 ₂ C a O / S i 0 ₂ ratio 0 in terms. 2 or al 7. 9, C a OZA 1 ratio of ₂ O ₃ is 0. 2 to 1 2.5 eyes become adjusted to, C a The components are increased and the brightness is improved. In addition, strength and nailing performance are also high. For this reason, the brightness of the cured product can be N5 or more as a value based on the provisions of JISZ8721.

Note that JISZ8721 sets the ideal black lightness to 0 and the ideal white lightness to 10, and the perception of the brightness is equal between these black lightness and white lightness. Each color is divided into 10 so as to obtain the rate, and the symbols are displayed with symbols from NO to N10.

The actual lightness measurement contrasts with the color chart corresponding to N0 to N10. In this case, the first decimal place is 0 or 5. The lightness of the cured product can be N5 or more based on the value of JIS Z8721, so that coloring and decoration can be performed.

It is preferable that the crystal habit of the calcium carbonate is at least one form selected from a spindle shape, a square shape, a thin table shape, a cubic shape, and a column shape. This is because the whiteness is high and the corners make it hard to get caught in the fiber and fall off, so that it can be incorporated into the cured product even in papermaking.

When the papermaking sludge cement is added, its content is desirably 30% by weight or less. This is because the lightness decreases as the content of papermaking sludge cement increases. Also, it is recognized that the strength is reduced by the addition of cement.

Japanese Patent Application Laid-Open No. 55-12853 discloses a technique in which papermaking sludge is wire-pressed, dewatered, and hot-pressed. However, at this time According to the “Shizuoka Paper Industry Testing Laboratory Report” issued in 1979, sludge is only about 2.6% by weight in terms of CaO, and its strength is not sufficient. In addition, since it is not a papermaking, it contains a large amount of impurities and eventually has low brightness.

In Japanese Patent Publication No. 57-19019, a mixture of papermaking sludge and a montmorillon nip is press-formed, but the papermaking sludge at that time had a low Ca component and a Ca-based crystal. However, the compression strength is poor. JP-A-50-101604 discloses a board obtained by mixing papermaking sludge with hydrophobic fibers and adding a binder. However, as the time of the paper sludge, less C a Ingredients, The intensity is also bent 2. strength 5 k gZc m ^2, also having a high strength and composite, there is only 1 5 k gZcm ² about However, the present invention is far superior. Japanese Patent Application Laid-Open No. 52-90585 discloses a papermaking sludge whose surface is treated with paraffin. However, the papermaking sludge at that time has little Ca component and is considered to have poor strength. In any case, since it is not a papermaking method, it contains a large amount of impurities, resulting in low brightness.

In addition, since the cured product is manufactured by making a paper using a mesh-shaped rotating drum, impurities are dropped from the mesh, so that the impurities can be reduced and the brightness can be increased.

In JP-A-49-114628, a 3% diluted mixture of papermaking sludge and cement is formed on a rotary drum, transferred from the drum surface onto a strip blanket, dewatered and pressed, and further wound. A technique is disclosed in which a layer is thickened by a take-up roll, cut, and conveyed by a conveyor.

However, with this technology, the ratio of CaO is small, and the brightness is reduced. In addition, more than 55% of cement is included, which also causes a decrease in brightness. Also, Japanese Patent Application Laid-Open No. 59-15656 discloses a papermaking method using a round wire mesh. However, it is a method in which a mat is formed one by one to form a multilayer, which is inefficient.

In order to achieve the fifth object described above, a method for producing a cured product according to claim 13 is characterized in that a raw material solution containing papermaking sludge is formed using a filter body, and papermaking sludge is formed on the surface of the filter body. At the same time, the paper is transferred to the conveyor belt after being transferred, and the paper on the conveyor belt is transferred to a cutting rotary drum having a cutting mechanism to be multilayered. The specified size when the specified thickness is reached And the paper is cured to obtain a cured papermaking sludge. With the rotary drum for cutting, a paper having a uniform thickness and size can be continuously formed, so that the cured body can be efficiently mass-produced.

Since the paper is multi-layered by a cutting rotary drum with a cutting mechanism, it can be automated without cutting. As the cutting mechanism, there are a cutting mechanism having a blade 35 that comes into contact with the cutting rotary drum 30 almost vertically as shown in FIG. 20 and a groove 32 for retaining water as shown in FIG. It is desirable to have a mechanism 31 for pushing out the papermaking body 26 from the inside. In FIG. 20, a fixed length papermaking body can be mass-produced by pressing the blade 35 in synchronization with the rotary drum 30 for cutting.

On the other hand, in the case of Fig. 21, water retained on the surface of the groove 32 penetrates the papermaking body 26 and becomes soft locally, and the paperboard is pushed out from the inside by the piano wire 31 to cut. Can be achieved. Since this does not use sharp blades, it is possible to ensure worker safety.

In order to achieve the first object described above, a method for producing a cured product according to claim 14 is characterized in that a plurality of papermaking sludge papermaking bodies obtained by papermaking a raw material solution containing papermaking sludge using a drainage body are provided. The layers are laminated and pressed with 10 to 25 O Kg m ² . Since it is inefficient to obtain a thick paper by papermaking, a thin paper is efficiently made from papermaking sludge and laminated to produce a cured product of the required strength and thickness. For this reason, it becomes possible to efficiently mass-produce the cured product from the papermaking sludge. Since the layers are multi-layered and pressed under pressure, a cured product having a required thickness can be easily produced. Further, a pressure press is performed at 10 to 25 O kg m ² . If the press is performed at less than 1 O Kg ra ² , the required strength cannot be obtained. On the other hand, the strength cannot be increased even if the pressure is exceeded 250 Kg / cm ² , resulting in an increase in the size and cost of the press. Further, if it is less than 10 kg Z cm ² , voids are formed, the strength is low, and peeling and warping occur. Conversely, if it exceeds 250 kg Z cm ² , the fibers will be oriented in the direction in which pressure is applied, and the strength will also decrease, causing peeling and warping. In papermaking, the fibers tend to be naturally oriented, and high pressures are rather inconvenient.

In order to achieve the above-mentioned sixth object, a method for producing a cured product according to claim 15 is characterized in that a papermaking sludge papermaking product obtained by papermaking a raw material solution containing papermaking sludge is laminated and hardened. This is a method for producing a cured body to be converted into a cured product, wherein the laminates are alternately inverted while being laminated. That is, since the paper bodies are laminated while reversing the direction in which the warpage occurs, the cured body formed by laminating the paper bodies does not warp and delamination does not occur.

In order to achieve the sixth object, a method for producing a cured product according to claim 16 is characterized in that a raw material solution containing a papermaking sludge is formed using a filter body, and a papermaking sludge paperwork is attached to the surface of the filter body. At the same time, the papermaking product is transferred to a conveyor belt and then transferred. The papermaking sludge papermaking material on the conveyor belt is transferred to a cutting rotary drum to form a multilayer, which is cut into a predetermined size to obtain a sheet. A method for producing a cured product in which a plurality of obtained papers are laminated and cured, wherein the papers are laminated while being alternately inverted when the papers are laminated. That is, since the paper bodies are laminated while reversing the direction in which the warpage occurs, the cured body formed by laminating the paper bodies does not warp and delamination does not occur. In order to achieve the sixth object, a method for producing a cured product according to claim 17 is to form a raw material solution containing a papermaking sludge using a filter body, and attach a papermaking sludge paperwork to the surface of the filter body. At the same time, the papermaking product is transferred to a conveyor belt and then transferred. The papermaking sludge papermaking material on the conveyor belt is transferred to a cutting rotary drum to form a multilayer, which is cut into a predetermined size to obtain a sheet. A method for producing a cured product in which a plurality of obtained paper products are laminated and cured, wherein when the paper products are laminated, the exposed surfaces of the uppermost and lowermost paper products are in contact with the rotating drum. Then, the paper sheets are laminated while alternately inverting the lamination surface. That is, since the paper bodies are laminated while the direction in which the warpage occurs is reversed, the cured body formed by laminating the paper bodies does not warp and delamination does not occur. In addition, since the exposed surfaces of the uppermost and lowermost papermaking articles are surfaces that have been in contact with the rotating drum, the surfaces of the laminated cured products can be smoothed.

In order to achieve the sixth object, a method for producing a cured product according to claim 18 is to form a raw material solution containing a papermaking sludge using a filter body, and to attach a papermaking sludge paperwork to the surface of the filter body. And transferring the paper to a conveyor belt, cutting the paper into a predetermined size, and laminating and curing a plurality of papers obtained. At this time, the layers are stacked so that the transfer direction to the conveyor belt is shifted. In the papermaking body, a strength difference occurs along the transfer direction to the conveyor belt, By laminating the papermaking bodies so that the transfer direction to the conveyor belt is shifted, a cured body having uniform strength can be produced.

In order to achieve the above-mentioned seventh object, a method for producing a cured product according to claim 19 is characterized in that a coagulant is added to a raw material solution containing papermaking sludge to cause coagulation, and the coagulated raw material solution is filtered into a filtrate To form a papermaking sludge to obtain a cured papermaking sludge. For this reason, a cured product having a uniform specific gravity can be mass-produced from papermaking sludge. In addition, floc can be formed in the papermaking sludge by the coagulant, so that the papermaking efficiency can be improved.

In order to achieve the seventh object, a method for producing a cured product according to claim 20 is characterized in that a coagulant is added to a raw material solution containing a papermaking sludge to cause coagulation, and the coagulated raw material solution is formed using a filter body. At the same time, the papermaking sludge paperwork is adhered to the surface of the drainage body, and the papermaking body is transferred to a conveyor belt and then transferred, cut into a predetermined size, and the papermaking body is cured to obtain a cured papermaking sludge. obtain. For this reason, it is possible to mass-produce a cured product having a uniform specific gravity from papermaking sludge. In addition, floc is formed in the papermaking sludge by the flocculant, so that the papermaking efficiency can be improved.

In order to achieve the eighth object described above, in the method for producing a cured product according to claim 21, a binder is added to a raw material solution containing papermaking sludge, and the raw material solution is subjected to papermaking using a filter body. The body is cured to obtain a hardened paper sludge. The binder makes the paper body flexible, so that it is easy to handle and it is possible to mass-produce the cured body. Further, the strength and toughness of the cured product can be increased by the binder.

In order to achieve the eighth object, a method for producing a cured product according to claim 22 is characterized in that a binder is added to a raw material solution containing a papermaking sludge, and the raw material solution is formed using a filter body, and the surface of the filter body is formed. The papermaking sludge is adhered to the paperboard, and the papermaking body is transferred to a conveyor belt and then transferred, cut into a predetermined size, and the papermaking body is cured to obtain a cured papermaking sludge. Since the paper is made flexible by the binder, it is easy to handle after cutting, and it is possible to mass-produce the cured body. Further, the strength and toughness of the cured product can be increased by the binder.

In order to achieve the ninth object described above, a method for producing a cured product according to claim 23 is characterized in that the raw material solution containing the papermaking sludge is formed from papermaking sludge obtained by papermaking using a drainage body. The paper is pressed in a mold to produce a hardened paper sludge. Since the process is performed in a mold, the papermaking machine does not break even when pressurized at a high pressure, and it is possible to produce a high-strength cured product from papermaking sludge at a high yield.

In order to achieve the ninth object, a method for producing a cured product according to claim 24, comprising laminating a plurality of papermaking sludge papermaking products obtained by papermaking a raw material solution containing papermaking sludge using a drainage body, Pressed to produce hardened paper sludge. Since the process is performed in a mold, the paper is not broken even when pressurized at a high pressure, and a high-strength cured product can be produced from papermaking sludge at a high yield. In addition, since the papers are laminated and pressed under pressure, a cured product having a required thickness can be easily produced. In the method for producing a cured product according to claim 25, since the concentration of the raw material solution containing the papermaking sludge is 3.5 to 25% by weight, the papermaking property from the papermaking sludge is improved, and the curing is performed efficiently. The body can be mass-produced. That is, if the concentration is less than 3.5%, it is not possible to efficiently make a paper from a raw material solution using a filtrate, and if it exceeds 25%, the uniformity of the product is reduced.

In the method for producing a cured product according to claim 26, since the paper is dewatered while being conveyed by the conveyor belt, the moisture in the paper can be efficiently reduced.

In the method for producing a cured product according to claim 27, the paper-formed body on the conveyor belt is multilayered while being transferred to a rotary drum for cutting, and the multilayered paper-sheet is cut when it reaches a predetermined thickness. For this reason, it is possible to continuously form a sheet having a uniform thickness. In the method for producing a cured product according to claim 28, the cut sheet is further multi-layered and then subjected to pressure pressing. Therefore, a cured product having a required thickness can be easily produced.

In the method for producing a cured product according to claim 29, the pressure press is performed at 10 to 250 Kg / cm ² . If the pressing is performed at less than 10 Kg / cm ² , the required strength cannot be obtained. On the other hand, it is not possible to increase the strength by press-pressing over 25 O kgm ² , and the press machine becomes larger and more expensive.

Claim 30 contains no cement or contains 30% by weight or less of cement in the solid content. The inclusion of cement improves the papermaking properties, but causes a decrease in strength and a decrease in lightness. 30% by weight is the upper limit.

In the method for producing a cured product according to claim 31, the papermaking product is laminated with a raw material solution interposed. Therefore, it is possible to produce a multilayer cured body that does not cause peeling.

In the method for producing a cured product according to claim 32, the papermaking sludge is efficiently formed by laminating the papermaking sludge to a thickness of 2 Oram or less, and the strength and thickness required by lamination are hardened. Manufacture the body. For this reason, it becomes possible to efficiently mass-produce the cured product from papermaking sludge.

The method for producing a cured product according to claim 33, wherein the coagulant is any one of aluminum sulfate, ferric chloride, polyaluminum chloride, sodium polyacrylate, polymethacrylate, polyacrylate, and polyacrylamide. Therefore, the raw material solution containing papermaking sludge can be efficiently aggregated.

In the method for producing a cured product according to claim 34, since the binder is an organic fiber, the papermaking product can be made flexible.

In order to achieve the first object, an apparatus for producing a cured body according to claim 35 is characterized in that a raw material solution is formed, and a paper body made of paper sludge is adhered to the surface of the raw material solution; and a paper body attached to the surface of the filtrate body. Belt that transfers and transports the paper, a cutting device that cuts the paper that has been transported through the transport belt to a predetermined size, and a curing device that cures the cut paper to obtain a cured papermaking sludge And For this reason, the cured product can be efficiently mass-produced from papermaking sludge.

In order to achieve the second object, the apparatus for producing a cured product according to claim 36 is characterized in that the raw material solution containing the papermaking sludge is made into paper, and the number of rotations for attaching the papermaking sludge paperwork to the surface is 1 to 100. A rotating drum for the batch, a conveyor belt for transferring and transporting the paper body attached to the surface of the rotary drum, a cutting device for cutting the paper body transported on the conveyor belt to a predetermined size, and a cut paper machine. A curing device for curing the body to obtain a cured papermaking sludge. For this reason, the cured product can be efficiently mass-produced from papermaking sludge.

In order to achieve the third object, the apparatus for producing a cured product according to claim 37 forms a raw material solution containing a papermaking sludge, and adheres a papermaking sludge paperwork to the surface. A filter body having a mesh structure, a transport belt for transferring and transporting the paper body attached to the surface of the filter body, a cutting device for cutting the paper body transported by the transport belt to a predetermined size, A curing device for curing the papermaking body to obtain a cured papermaking sludge. For this reason, a papermaking body can be formed from the raw material solution with high efficiency, It is possible to efficiently mass-produce a high-density cured product from papermaking sludge. Here, if the mesh is coarser than # 40, only the inorganic amorphous material comes out of the raw material solution, and the density and strength of the cured product are reduced. On the other hand, if the mesh is finer than # 150, the removal of water will be poor, and it will not be possible to make paper from the raw material solution with high efficiency. In addition, moisture remains and voids are formed by drying, so that the density decreases.

In addition, if it is less than # 40 (that is, the eyes are coarse), it is not possible to capture the calcium carbonate that imparts whiteness, and if it exceeds # 150 (that is, the eyes are fine), It takes in impurities and in any case reduces the brightness.

In order to achieve the fourth object, the apparatus for producing a cured product according to claim 38 is to produce a raw material solution having a solid content of 3.5 to 25% by weight including a papermaking sludge, and to form a papermaking sludge on the surface. A rotating drum composed of a mesh to which the paper is adhered, a transport belt for transferring and transporting the paper attached to the surface of the rotating drum composed of the mesh, and a paper transported by the transport belt to a predetermined size. A cutting device for cutting and a hardening device for hardening the cut paper body to obtain a hardened body of papermaking sludge are provided. For this reason, the papermaking from papermaking sludge is improved, and the cured product can be efficiently mass-produced. That is, when the concentration is less than 3.5%, the concentration is low and the paper cannot be efficiently made from the raw material solution using a rotary drum, and the concentration decreases with time, and the thickness decreases. It will not be the best. If it exceeds 25%, the in-plane uniformity of the product will decrease. If uneven, drying causes peeling and warping.

In order to achieve the first object, an apparatus for producing a cured product according to claim 39, comprising: a raw material solution containing a papermaking sludge; and a filter body for adhering a papermaking sludge paperwork to a surface thereof; and a surface of the filtrate body. Conveyor belt that transfers and transports the paper attached to the paper 5 to 80 m / min, a cutting device that cuts the paper transported on the transport belt to a predetermined size, and the cut paper And a curing device for curing the papermaking sludge to obtain a cured product of the papermaking sludge. Since the transport speed of the transport belt is 5 to 8 Om / min, it is possible to efficiently produce a paper of appropriate thickness from the raw material solution, and it is possible to mass-produce the cured product from paper sludge efficiently. Become. Here, if the transport speed is lower than 5 mZ, the paper can be made thicker, but the papermaking efficiency is low and the thickness uniformity is low. On the other hand, if the transport speed exceeds 8 OmZ, the paper becomes thinner, making it difficult to obtain a uniform thickness and cutting the paper. To achieve the first object, a production device for a cured body according to claim 40, comprising: a rotating drum made of a mesh that forms a raw material solution containing papermaking sludge and adheres a papermaking sludge paperwork to the surface; A transfer belt made of a porous material that transfers the paper body attached to the surface of the rotating drum and dewaters the paper body while it is being transported; And a curing device for curing the papermaking body to obtain a cured papermaking sludge. Since the paper is dewatered while being transported by the transport belt, the moisture in the paper can be efficiently reduced, and the cured product can be mass-produced. In addition, since a rotating drum composed of a mesh is used, a papermaking body can be continuously formed from a raw material solution, and a hardened body can be efficiently mass-produced from papermaking sludge. In addition, since the cured product is manufactured by making a paper using a mesh-shaped rotating drum, impurities are dropped from the mesh, so that the impurities can be reduced and the brightness can be increased.

In order to achieve the fifth object, the apparatus for producing a cured product according to claim 41 is characterized in that: a raw material solution containing a papermaking sludge is made into paper, and a papermaking body of papermaking sludge is attached to the surface; A conveyor belt that transfers and transports the paper body attached to the paper, a cutting rotary drum that transfers the paper body on the conveyor belt into multiple layers while transferring the paper body, and a groove for retaining water on the surface, and a vicinity of the groove. And an extrusion mechanism for extruding the paper body from the inside.When the multilayered paper body on the surface reaches a predetermined thickness, the extrusion mechanism is actuated, and at a position corresponding to the groove, The cutting machine is provided with a rotary drum for cutting the paper, and a curing device for curing the cut paper to obtain a cured papermaking sludge. For this reason, a paper having a uniform thickness can be continuously formed, and the cured product can be efficiently mass-produced. In addition, safety is high without using knives or other blades.

This will be described in detail with reference to FIG. FIGS. 21 (A) and (B) are explanatory views of the rotary drum for cutting, and FIG. 21 (C) is a perspective view of the rotary drum for cutting. As shown in FIG. 21 (A), the rotary drum 30 for cutting has a groove 32 on which water on the surface is retained, and this water is locally applied to the papermaking sludge papermaking body 26. Position (W). Next, as shown in FIGS. 21 (B) and (C), the piano wire 31 is extruded, and the papermaking sludge papermaking body 26 is extruded from the inside. Then, the paper body breaks at the locally softened portion W, and cutting is achieved. To achieve the first object, an apparatus for producing a cured product according to claim 42, wherein a raw material solution containing a papermaking sludge is made into paper, and a paper body for attaching a papermaking sludge paperwork to the surface; A conveyor belt that transfers and transports the paper body attached to the paper, a cutting device that cuts the paper body that has been transported through the conveyor belt to a predetermined size, and a paper solution of the cut paper sludge. And a laminating apparatus for laminating a plurality of layers by interposing the layers. Since it is inefficient to obtain a thick paper by papermaking, thin paper from papermaking sludge and efficient papermaking and lamination are used to produce the required strength and thickness of the cured product. . For this reason, it becomes possible to efficiently mass-produce the cured product from papermaking sludge. In addition, since the paper bodies are laminated with the raw material solution interposed therebetween, a multilayer cured body free of peeling can be produced.

In order to achieve the sixth object, an apparatus for producing a cured body according to claim 43 is characterized in that a raw material solution containing papermaking sludge is made into paper, and a papermaking body of papermaking sludge is attached to the surface; A conveyor belt that transfers and transports the paper body adhered to the paper, a cutting device that cuts the paper body that has been transported on the conveyor belt to a predetermined size, and a papermaking body of the cut paper sludge are alternately inverted. And a stacking device for stacking. That is, since the paper bodies are laminated while reversing the direction in which the warpage occurs, the cured body formed by laminating the paper bodies does not warp and delamination does not occur.

In order to achieve the ninth object, an apparatus for producing a cured product according to claim 44, comprising: a papermaking apparatus for producing a raw material solution containing papermaking sludge to produce a papermaking sludge papermaking article; and a papermaking sludge papermaking apparatus. And a pressurizing device for pressurizing the papermaking machine in a formwork, the pressurizing device having a through hole for removing water seeping out of the papermaking body. Since it is performed in a mold, the papermaking machine does not break even when pressurized at high pressure, and it is possible to produce a high-strength cured product from papermaking sludge at a high yield. In addition, since the mold is provided with a through hole for removing water seeping out of the papermaking body, dehydration is performed at the time of pressurization, and a curing process by drying is completed in a short time.

In order to achieve the ninth object, an apparatus for producing a cured body according to claim 45 is characterized in that a raw material solution containing a papermaking sludge is made into paper, and a papermaking body of papermaking sludge is adhered to the surface; A conveyor belt that transfers and transports the paper body attached to the paper, a cutting device that cuts the paper body that has been transported through the conveyor belt to a predetermined size, and a papermaking sludge paper body that has been cut into a mold. A pressurizing device for putting and pressurizing, wherein And a pressurizing device having a through-hole for removing moisture that oozes out. Since it is performed in a mold, the papermaking machine does not break even when pressurized at high pressure, and it is possible to produce a high-strength cured product from papermaking sludge at a high yield. In addition, since the mold is provided with a through hole for removing moisture oozing from the papermaking body, dehydration is performed at the time of pressurization, and the curing process by subsequent drying can be completed in a short time. Further, since the paper is laminated and then pressed under pressure, a cured product having a required thickness can be easily produced. In order to achieve the ninth object, an apparatus for producing a cured product according to claim 46 is characterized in that a raw material solution containing papermaking sludge is made into paper, and a papermaking body of papermaking sludge is adhered to the surface; A conveyor belt for transferring and transporting the paper body adhering to the paper, a cutting device for cutting the paper body transported on the conveyor belt to a predetermined size, and a papermaking machine for the cut paper sludge. A pressurizing device for placing the laminated paper in a mold and pressurizing the paper, wherein the press is provided with a through hole for draining water oozing out from the paper. And. Since the process is performed in a mold, the paper is not broken even when pressurized at a high pressure, and a high-strength cured product can be produced from papermaking sludge at a high yield. In addition, since the mold is provided with a through hole for removing water seeping from the papermaking body, dehydration is performed at the time of pressurization, and the curing process by subsequent drying can be completed in a short time. Further, since a plurality of papermaking sludge papermaking bodies are laminated with a raw material solution interposed therebetween, a multilayer cured body without peeling can be produced.

An apparatus for producing a cured body according to claim 47 is constituted by a rotating drum whose drainage body is formed of a mesh. For this reason, it is possible to continuously form a paper from the raw material solution, and it is possible to efficiently mass-produce the cured body from the papermaking sludge.

In the apparatus for producing a cured product according to claim 48, since the rotating speed of the rotating drum is 1 to 100 times, a paper product can be formed from the raw material solution with high efficiency, and the cured product can be efficiently produced from papermaking sludge. Can be mass-produced. Here, if the rotating drum is lower than one rotation, the papermaking efficiency is low. On the other hand, if the rotation speed exceeds 100 rotations, it becomes difficult to form a papermaking article with a uniform thickness.

In the apparatus for manufacturing a cured product according to claim 49, a plurality of drainage bodies are provided along the conveyor belt, and the papermaking body is transferred to the conveyor belt while being multilayered. For this reason, paper can be formed from the raw material solution with high efficiency, and the mass can be efficiently produced from paper sludge. It becomes possible.

In the apparatus for producing a cured product according to claim 50, the drainage body has a mesh structure of # 40 to 150. For this reason, it is possible to make a papermaking product from the raw material solution with high efficiency, and it is possible to efficiently mass-produce a high-density cured product from papermaking sludge. Here, if the mesh is coarser than # 40, only the inorganic non-crystalline material is removed from the raw material solution, and the density and strength of the cured product are reduced. On the other hand, if the mesh is finer than # 150, the removal of water will be poor, and it will not be possible to produce a paper from the raw material solution with high efficiency.

In the apparatus for manufacturing a cured product according to claim 51, since the transport speed of the transport belt is 5 to 80 minutes, a paper having an appropriate thickness can be formed from the raw material solution with high efficiency, and the papermaking sludge can be efficiently manufactured. This makes it possible to mass-produce the cured body. Here, if the transport speed is lower than 5 m / min, a thick paper can be formed, but the paper forming efficiency is low. On the other hand, if the conveying speed exceeds 8 OmZ, the paper becomes thinner, making it difficult to obtain a uniform thickness and cutting the paper.

In the apparatus for producing a cured body according to claim 52, since the transport belt is formed of a porous body having continuous pores, the paper can be dewatered while being transported by the transport belt. Moisture can be reduced.

An apparatus for producing a cured body according to claim 53 is configured such that the cutting device comprises a cutting rotary drum for forming a multilayer while transferring the paper body. Then, when the multilayered paper body on the surface of the rotary drum for cutting reaches a predetermined thickness, the extruding mechanism is operated to cut the paper body at a position corresponding to the groove. Therefore, it is possible to efficiently produce a paper having a uniform thickness.

In the apparatus for producing a cured body according to claim 54, the cutting device includes a blade for cutting the paper-sheet at one end by a cutting rotary drum at regular intervals. Therefore, it is possible to efficiently form a paper having a predetermined length.

In the apparatus for producing a cured product according to claim 55, the cutting device includes a blade that cuts the papermaking material having one end cut by the cutting rotary drum at regular intervals. Therefore, it is possible to efficiently form a paper having a predetermined length.

In the apparatus for producing a cured product according to claim 56, since the laminating apparatus laminates a plurality of papermaking sludge papermaking products with a raw material solution interposed therebetween, it is possible to produce a multilayered cured product without peeling. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic cross-sectional view of the composite cured product of the present invention.

FIG. 2 is a schematic cross-sectional view of the composite cured product of the present invention.

FIG. 3 is a conceptual diagram of an apparatus for producing a cured body according to the first embodiment of the present invention. 4 (A) and 4 (B) are conceptual diagrams of the raw material adjustment mechanism.

Fig. 5 is a conceptual diagram of the papermaking mechanism.

FIGS. 6 (A), (B) and (C) are explanatory diagrams of the operation of the cutting rotary drum. FIGS. 7 (A), (B) and (C) are explanatory diagrams of the operation of the reversing device.

FIGS. 8 (A), (B) and (C) are illustrations of the operation of the press.

FIGS. 9 (A), (B) and (C) are explanatory diagrams of the operation of the press machine.

FIGS. 10 (A), (B), and (C) are explanatory views of the bonding direction of the paper body. FIG. 11 is a chart showing the relationship between the direction of laminating the papermaking product and the occurrence of delamination, and the relationship between the pressure and the strength in a press machine.

FIG. 12 is an X-ray diffraction chart of the composite cured product according to Example 1.

FIG. 13 is an X-ray diffraction chart of the composite cured product according to Example 1.

FIG. 14 is a conceptual diagram of an apparatus for producing a cured body according to a second embodiment of the present invention. The first 5 is a graph showing a relation between C a O / S i 0 ₂ and compressive strength. FIG. 16 is a graph showing the relationship between C a / 1 ₂ 0 ₃ and compressive strength. FIG. 17 is a graph showing the relationship between the content of CaO and bending strength / compression strength.

FIG. 18 is a graph showing the relationship between the content of CaO and nail pull-out strength. FIG. 19 is a schematic cross-sectional view of a composite building material using the composite cured product of the present invention.

FIG. 20 is an explanatory view of a rotary drum for cutting.

FIGS. 21 (A), (B) and (C) are explanatory views of the operation of the cutting rotary drum. BEST MODE FOR CARRYING OUT THE INVENTION

Here, first, the composite hardened body manufactured by the method for manufacturing a composite hardened body of the present invention described later The structure of the compound will be described with reference to the schematic diagram of FIG. The composite cured body 1 includes an inorganic amorphous body 2 composed of two or more types of oxides, and is basically composed of the inorganic amorphous body 2 and an organic fibrous substance 3 mixed therein. . As used herein, the term “inorganic amorphous material composed of two or more oxides” refers to an oxide (1) a monoxide (2) ··· an oxide (n) system (where n is a natural number, The oxide (1), the oxide (2), and the oxide (n) are different oxides).

Although it is difficult to accurately define such an amorphous substance, it is considered that the amorphous substance is an amorphous compound formed by a solid solution or hydration reaction of two or more oxides. By X-ray fluorescence analysis, such inorganic amorphous compounds can be analyzed by analyzing the elements (Al, Si, Ca, Na, Mg, P, S, K :, Ti, Mn, F e, at least two types selected from Zn) were confirmed, and the analysis chart by X-ray diffraction showed 26:10. Halo can be seen in the range of ~ 40 °. This halo is a gradual undulation of the intensity of X-rays, and is observed as a broad swell on the X-ray chart. The halo has a half width of 20: 2 ° or more.

In the above-mentioned composite cured product 1, the inorganic amorphous material 2 becomes a strength-expressing substance, and the organic fibrous material 3 is dispersed in the inorganic amorphous material 2 to improve the fracture toughness value. Strength value ゃ Impact resistance can be improved. In addition, a homogeneous cured product having no anisotropy in strength can be obtained. Furthermore, since it is an amorphous body, there is an advantage that sufficient strength can be obtained at a low density.

The reason why the above-mentioned amorphous material becomes a material exhibiting strength is not clear, but is presumed to be because the progress of cracks is inhibited as compared with the crystalline structure. In addition, it is considered that the fibrous material is more uniformly dispersed and shrunk in the amorphous state than in the crystalline state, and hence the fracture toughness individual value is also improved. As a result, cracking does not occur even if a nail is driven or a through-hole is provided, making it optimal for materials that require processing, such as building materials.

Here, as the oxide, can be used oxides of metals and Roh or non, A 1 ₂ 0 _3, S I_〇 _{_{2, C aO, Na 2 O}} , MgO, P 2 〇 _5, S_〇 _3, K ₂ 0, T I_〇 _2, MnO, is preferably selected from F e ₂ 0 ₃ and Z nO. Toriwa _{only, A 1 0 3 - S i} 0 2 - Ca O system or A 1 ₂ 0 ₃ - the C a O-amorphous body composed of oxide, or these amorphous bodies - S i 0 ₂ The complex is optimal. In addition, Oxide in the latter amorphous body is A 1 ₂ 0 _3, 1 or more S i 0 ₂ and C a O metallic and / or oxide of nonmetal excluding.

First, in the amorphous body composed of the A 1 ₂ 〇 ₃ — S i 0 ₂ — C a O system, all or a part of each of the components A 1 „0 ₃ , S i 0 ₂ and C a O are fixed to each other. etc. soluble or hydration is a compound having an amorphous structure produced by. that, a l ₂ 0 ₃ and S I_〇 _2, S i 0 ₂ and _{C a O, a 1 2 0} 3 and C a It is thought to contain any of the compounds generated by solid solution or hydration reaction with a combination of O, and A120 „, SiO ₂ and CaO.

In such an inorganic amorphous compound, Al, Si, and Ca were confirmed by X-ray fluorescence analysis, and the above halo was observed in the range of 20: 10 ° to 40 ° in the analysis chart by X-ray diffraction. Can be seen.

_{_{Further, A 1 2 0 3, S}} i 0 2 and C a O at least one oxide of pressurized example was the system in addition to, i.e. _{_{A 1 2 0 3 _S i 0}} 2 -C a O- of oxide-based non Akirashitsutai, in addition to the combination of the above _{_{a 1 2 0 3 -S i 0}} 2 -C a O system, a 1 ₂ 0 ₃ oxide, oxides and S i O _2, oxides and C a O , a 1 ₂ O ₃ and S i O ₂ and oxide, S I_〇 ₂ and C a O oxide, a 1 ₂ 0 ₃ and C a O oxide, and a 1 ₂ 0 ₃ and S I_〇 _It is considered to include any of the compounds formed by solid solution or hydration reaction of the combination of 2, CaO and oxide.

Incidentally, the oxide is 2 or more, i.e., A 1 ₂ 0 ₃ - if amorphous body S i 0 ₂ _C a O- oxides (n) based (n is a natural number of 2 or more), these Oxides, for example, oxide (1), oxide (2) ··· oxide (n) (n is a natural number of 2 or more, and oxide (n) is a different oxide if the value of n is different means, and generates by a 1 ₂ 〇 _3, S I_〇 _2, C a O is obtained by excluding the) like the solid solution or hydration at least two combination selected from each _{_{compound, a 1 2 0 3, S}} i 0 2, C a have in solid solution with at least two combinations selected from O is produced by hydrating reaction or the like compound, further oxides (1), oxide (2) ···· Oxide (n) (n is a natural number of 2 or more) and at least one selected from the group consisting of A 1 ₂ 〇 ₃ , Si 0 ₂ , and CaO It is thought to include any of the compounds formed by solid solution or hydration reaction in combination with the species. By X-ray fluorescence spectroscopy, such inorganic amorphous compounds can be analyzed in addition to A 1, S i, and C a, as well as the elements (Na, Mg, P, S, K, T i, Mn , Fe and Zn), and the above halo is observed in the range of 20: 10 ° to 40 ° in the chart of analysis by X-ray diffraction.

_{_{Here, A 1 2 0 3, S}} i 0 2 and the oxide combined with the C a O is one or is 2 or more, metals excluding _{_{A 1 2 0 3, S i}} O C C a O available oxides of Oyopi or non, for example _{_{Na 2 0, MgO, P 2}} 0 5, S0 3, K 2 0, T i 0 2, MnO, be selected from F e ₂ 0 ₃ and Z nO Can be. This selection can be made based on the properties expected of the composite cured product.

For example, since Na ₂₀ or K ₂₀ can be removed with an alkali, etc., if the removal treatment is performed prior to the plating treatment, the surface of the composite hardened body will become rough and will act as an anchor for the plating. Can be.

MgO contributes to _{_{A 1 2 0 3, S i}} 0 2, C a O solid solution to strength development, greatly improve the bending strength Ya impact resistance.

P ₂ 0 _5, when you use the biomaterials to aid adhesion of the bone (artificial tooth root, an artificial bone) is particularly advantageous.

so ₃ has a bactericidal action and is suitable for antibacterial building materials.

T I_〇 _2, together with a whitish coloring material, it either et acting as photooxidation catalysts, can be forcibly oxidize organic contaminants adhering, a self-cleaning power of Ru can be cleaned only by irradiation of light building It has a unique effect that it can be used as a material, various filters, and reaction catalysts.

MnO is dark color colorant, F e 0 ₃ coloring materials bright color, ZnO is useful as a colorant whitish.

These oxides may be present alone in the amorphous body. The composition of the amorphous body, respectively in terms of _{_{A 1 2 0 3, S i}} 0 2 and _{C a O, A 1 2 O} 3: 3~ 51 % by weight relative to the total weight of the composite cured body , S i O _2: 6~ 53 wt% and C a O relative to the total weight of the double coupling cured product: 6-63% by weight relative to the total weight of the composite hardened product, preferably with 8-63 wt%, Further, it is preferable to contain them in a range where the total does not exceed 100% by weight.

Because, when the content of A 1 ₂ O ₃ is less than 3% by weight or exceeds 51% by weight, Even if the strength of the composite cured body is reduced, and the content of SiO ₂ is less than 6% by weight or exceeds 53% by weight, the strength of the composite cured body is reduced. Also, if the content of CaO is less than 8% by weight or exceeds 63% by weight, the strength of the composite cured product also decreases.

Furthermore, in terms of oxides, the ratio of C a OZS i O, is 0.2 to 7.9, C a

The ratio of O / A 1 ₂ 0 ₃ is advantageous for obtaining a high cure of that force intensity is adjusted to 0 2 2.5.

Wherein C a O / S i 0 ₂ ratio is greater than 0.2 7.9 or less, C a O / A l zO

The ratio of ₃ is more than 0.2 and 12.5 or less is optimal. Note that these, C a, A 1, the amount of S i (C a 0, A 1 2 0 3, S i 0 2 equivalent amount) is the total amount of C a, A 1, S i in the composite cured body Yes, for example, Ca means the total amount of Ca in calcium carbonate and inorganic amorphous material.

_{_{Further, A 1 2 0 3, S}} i 0 as oxides other than ₂ and _{C a O, N a 2 0} , M g 0, P 2 0 5, S0 3, K 2 0, T I_〇 _2, MnO, when it contains one or more of F e ₂ 〇 ₃ and Z nO, preferred content of each component is as follows. It goes without saying that the total amount of these oxides does not exceed 100% by weight.

0.1 · -1 relative to the total weight of Na ₂ 0 composite cured body. 2 wt%

Mg O: 0. 3 -1 1. relative to the total weight of the composite hardened product 0 _{_{wt% PP 2 OO 5:..}} 0. 1 7. 3 % by weight relative to the total weight of the composite cured body

0.1-3.5% by weight based on the total weight of the so ₃ composite cured body

2ο 0.1 '1.2% by weight based on the total weight of the composite cured product

0.1 -8 relative to the total weight of the tau io ₂ composite cured body. 7 wt%

Μη ：: 0.1 based on the total weight of the composite cured product

FF ee. ₂ 〇 0 ₃ . : 0.27.8% by weight based on the total weight of the composite cured body ZnO 0.1 to 8% by weight based on the total weight of the composite cured body The reason for limiting the content of these oxides to the above range is as follows. This is because, if the ratio is outside the above range, the strength of the composite cured body is reduced.

It should be noted that whether or not it has an amorphous structure can be confirmed by X-ray diffraction. That is, if a halo is observed in the region of 20: 10 ° to 40 ° by X-ray diffraction, the amorphous structure is You can confirm that you have. In the present invention, in addition to those having a completely amorphous structure, Hydrogen Aluminum Silicate, Kaolinite, Zeolite, Gehlenite, syn, Anorthite, Melitite, Gehlenite-synthetic, tobermorite, xonotlite, ettringite, S i〇 ₂ , A1 ₂₀ . , C a 0, N a ₂ _{_{〇, Mg O, P 2 0 5}} , S0 3, K 2 0, T i 〇 _2, MnO, oxides such as F e ₂ 〇 ₃ and Z nO, and C a C_〇 Crystals such as ₃ (Calcite) may be mixed.

These crystals are not considered to be strength-generating substances by themselves, but are considered to have effects such as improving the compressive strength by increasing the hardness and density, and suppressing the progress of cracks. . The content of the crystal is desirably 0.1 to 50% by weight based on the total weight of the composite cured product. If the crystal content is less than 0.1% by weight, effects such as increasing the hardness and density to improve the compressive strength and suppressing crack propagation cannot be sufficiently obtained, and conversely, the content exceeds 50% by weight. This causes a decrease in bending strength.

By the way, the above A 1 A O ₃ -S i O „based crystalline compound is Hydrogen Aluminum Silicate, Kaolinite, Zeolite, A 1 ₂ O ₃ —C a O based crystalline compound is Calcium Aluminate, C a O- S i O _Q based crystal tens raw i匕合product force _{_{Calcium Silicate, a 1 2 0 3}} - S i 0 2 _C a O -based crystalline † Namai匕合product of Gehlenite, syn, is anorthite, the _{_{a 1 2 0 3 - S i}} 0 2 -C a O-M g O -based crystalline compound of Melitite, a Gehlenite-synthetic.

Furthermore, it is desirable to include a C a as the _{crystals, Gehlenite, syn (C a 2} A 1 "O 7), Melitite- synthetic (C a. (M g 0 5 A 1 0 5) (S ij 5 _{_{A 1 0 5 O 7))}} , Gehlenite-synthetic (C a 2 (M g 0 25 A 1 0. 75) (S ij "5 A 1 0 7 5 O 7)), anorthite, ordered (C a 2 A _{_{_{1 2 S i 2 0 8)}}} , may contain a calcium carbonate (Calcite).

In the composite cured product produced by the production method of the present invention, halogen may be added to an amorphous material composed of at least two or more types of oxides. This halogen acts as a catalyst for the solid solution and hydrate formation reactions, and also acts as a combustion inhibitor. The content is desirably 0.1 to 1.2% by weight. Because 0. If it is less than 1, the strength is low, and if it exceeds 1.2% by weight, harmful substances are generated by combustion. As the halogen, chlorine, bromine, and fluorine are preferable.

Similarly, calcium carbonate (Calcite) may be added. Calcium carbonate itself is not a strength-expressing substance, but it is thought that the amorphous body surrounding calcium carbonate contributes to the improvement of the strength by preventing cracks from developing. The content of this calcium carbonate is desirably 48% by weight or less based on the total weight of the composite cured product. The reason for this is that if it exceeds 48% by weight, the flexural strength decreases. Further, the content is desirably 0.1% by weight or more. If the content is less than 0.1% by weight, it does not contribute to the improvement in strength.

Furthermore, the addition of a binder is also advantageous for further improving the strength and for improving the water resistance, chemical resistance and fire resistance. The binder is desirably made of one or both of a thermosetting resin and an inorganic binder. As the thermosetting resin, at least one resin selected from phenol resin, melamine resin, epoxy resin and urea resin is desirable. The inorganic binder is preferably at least one selected from the group consisting of sodium silicate, silica gel and alumina sol.

Next, in the method for producing a composite cured product of the present invention, an organic fibrous material composed of a polysaccharide is used as the organic fibrous material mixed in the inorganic amorphous material. This is because, the polysaccharide is present OH group, since easy bound to A 1 ₂ 0 _3, 3 1_Rei ₂ or Rei_3_rei of various compounds by hydrogen bonds.

The polysaccharide is desirably at least one compound selected from the group consisting of amino sugars, peronic acid, starch, glycogen, inulin, lichenin, senorelose, chitin, chitosan, hemicenolerose and pectin. In general, pulp, pulp grounds, and ground paper of newspapers and magazines are advantageously used as the organic fibrous material composed of these polysaccharides.

The content of the fibrous material is desirably 2 to 75% by weight. The reason for this is that if the content is less than 2% by weight, the strength of the composite cured product may be reduced, while if it exceeds 75% by weight, fire protection performance, water resistance and dimensional stability may be reduced. Further, the average length of the fibrous material is desirably 10 to 100 μιη. If the average length is too short, no entanglement will occur, and if the average length is too long, voids will form and the strength of the composite cured product will increase. This is because the degree tends to decrease.

The above composite cured product 1 is optimally obtained by drying and coagulating and curing paper sludge (scum). In other words, papermaking sludge is a pulp residue containing inorganic substances, contains organic fibrous materials, and is low-cost because it uses industrial waste as a raw material, contributing to solving environmental problems. . Moreover, the paper sludge itself has a function as a binder, and has an advantage that it can be formed into a desired shape by itself or by kneading with other industrial waste. .

Further, during the papermaking sludge, in addition to pulp, A 1 ₂ 0 ₃ S I_〇 _{_{2 C a O Na 2 0 MgO}} P 2 0 5 SO K 2 0 T I_〇 _₂ MnO F e ₂ 0 ₃ and It generally contains a crystal of ZnO or a sol-like substance that is a precursor of these oxides, or a composite thereof, at least one selected from halogen and calcium carbonate, and water.

Here, as shown in FIG. 2, mixing the inorganic particles 4 in the composite cured body 1 improves the fire resistance or forms a strength-expressing substance by reacting with the amorphous body to form a strength-producing substance. The specific gravity of the composite cured product can be adjusted by adjusting the amount of the inorganic particles.

As the inorganic particles 4, at least one selected from calcium carbonate, calcium hydroxide, shirasu, shirasu balloon, perlite, aluminum hydroxide, silica, anoremina, tanolek, calcium carbonate, and industrial waste powder can be used. You. In particular, it is desirable to use at least one kind of industrial waste powder selected from calcined powder of papermaking sludge, grinding dust of glass, and grinding dust of silica sand as the industrial waste powder. This is because the use of these industrial waste powders can reduce costs and contribute to solving environmental problems.

The inorganic particles obtained by calcining the papermaking sludge can be obtained by heating the papermaking sludge at 300.degree. The inorganic particles thus obtained are amorphous, have excellent strength and toughness, and have a low strength and density. In addition, inorganic particles obtained by sintering papermaking sludge at 300 ° C or higher and lower than 800 ° C or by quenching after heat treatment at 300 ° C to 1500 ° C are advantageous because they surely contain an amorphous body. . Desirably, the inorganic particles 4 have a specific surface area of 0.8 to 100 m ² Z g. If it is less than 0.8 m ² Z g, the contact area between the amorphous body and the inorganic particles becomes small and the strength is reduced.On the other hand, if it exceeds 10 O m ² , the effect of crack propagation and improvement of hardness is obtained. Decreases, resulting in a decrease in strength.

Furthermore, it is desirable that the inorganic particles 4 contain at least one or more inorganic substances selected from silica, alumina, iron oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxidized sodium, and phosphorus pentoxide. . These are chemically stable, have excellent weather resistance, and have desirable characteristics as industrial materials such as building materials.

If the average particle diameter of the inorganic particles 4 is too small or too large, sufficient strength cannot be obtained. Therefore, it is desirable that the average particle diameter be in the range of 1 to 100 μιη. The content of the inorganic particles is desirably 10 to 90% by weight. That is, if the amount of the inorganic particles is too large, the strength is reduced, and if the amount of the inorganic particles is too large, the strength becomes brittle, and in any case, the strength is reduced.

The composite hardened body 1 produced by the method of the present invention is used in various industries, including new building materials replacing calcium silicate board, perlite board, plywood, gypsum board, etc., as well as artificial limbs, artificial bones and artificial roots. It can be used for medical materials, electronic substrates such as core boards for printed wiring boards and interlayer resin insulation layers. Next, an embodiment of a method for producing a cured body and an apparatus for producing a cured body according to the present invention will be described with reference to FIG. 3 to FIG.

In the production method of the present invention, papermaking sludge is used as a raw material for the composite cured product without kneading with other industrial waste. The papermaking sludge used in the production method of the present invention includes printing and information paper, kraft paper, titanium paper, tissue paper, dust paper, toilet paper, sanitary products, towel paper, industrial hybrid paper and household hybrid paper. The papermaking sludge discharged in the pulp manufacturing process, raw material processing process, papermaking process, etc. in the production of paper is desired. Papermaking sludge is handled by Maruto Kiln. FIG. 3 shows the overall configuration of a cured body manufacturing apparatus. The apparatus for producing a hardened body is a raw material adjusting mechanism 10 for adjusting papermaking sludge to generate a slurry 14, a papermaking mechanism 20 for forming a paper 26 from the slurry 14, and a papermaking machine 26. Reversing device 40, a press machine 50 for laminating the paper 26 and then pressurizing and dewatering, and a dryer 60 for drying the pressed paper and forming a hardened body 1. Become.

First, the raw material adjusting mechanism 10 for adjusting the raw material will be described with reference to FIG. 4 (A). The raw material 11 and water 12 are weighed into a mixer 13 by suction dehydration as described below so that the concentration becomes 0.5 to 25% by weight of a solid content, and the mixture is mixed with aluminum sulfate and chloride. Flocculant consisting of ferric iron, polyaluminum chloride, sodium polyacrylate, polymethacrylate, polyacrylate, or polyacrylamide (floc agent: 0.01 to 5% added) and vinylon organic fibers such as fibers (binder: amount 0:.! ~ 1 0 weight ^_0/0) was added, and mixed in the mixer 1 3 adjusting the slurry 1 4. As organic fibers (binders), synthetic fibers such as polyethylene, polypropylene, and vinylon, pulp recovered from pipes and waste paper, and fibrous industrial waste can be used. As raw materials, various inorganic powders and resins can be added to papermaking sludge.

The slurry 14 is subjected to suction dehydration using a dehydration container 15 provided with a filter 16 at the bottom. The concentration is adjusted to 0.5 to 25% by weight of solid content by suction dehydration. In the suction dehydration, the fibers of the papermaking sludge are not oriented, so that the resulting cured composite is less likely to warp or crack.

The bottom of the dehydration vessel 15 is connected to a vacuum pump 17, and the vacuum pump 17 is operated to suck moisture. The filter 16 is not particularly limited, but may be a sintered metal, a perforated metal plate (a metal plate having a hole of 1 to 5 mm in diameter), a porous ceramic finale, a porous resin, a glass fiber plate, or the like. The raw material 14 whose water content has been adjusted in the dehydration container 15 is temporarily stored in a chest tank 18 內. The chest tank 18 is provided with a propeller for stirring, so that solids in the raw material do not settle.

In this embodiment, the force S for adjusting the water content by the dehydrating vessel 15, as shown in FIG. 4 (B), the water was added to the mixer 13 without using the dehydrating vessel 15. Quantity It is also possible to adjust the water content only by adjusting.

Subsequently, a papermaking mechanism 26 is formed from the slurry 14 containing the papermaking sludge whose water content has been adjusted by the papermaking mechanism 20. An organic binder such as an inorganic binder resin such as cement may be added to the slurry (raw material solution). The papermaking mechanism 20 will be described with reference to FIG. The papermaking mechanism 20 includes three bats 21, 218, 21 〇 that store the slurry 14, and a wire cylinder 22 A, which is disposed in the knot and papermaking the slurry 14, 22 B, 22 C and paper cylinders 26 formed by wire cylinders 22 A, 22 B, 22 C are transferred and transported by transport belts 23 and transport belts 23. A cutting drum 30 for winding and cutting the formed paper 26 to a predetermined thickness, a cutter 36 for cutting the paper 26, and a belt conveyor 38 for conveying the paper 26. Is provided.

The wire cylinders 22A, 22B, and 22C have a diameter of 70 cm and a width of 1 mm. In the present embodiment, since the drainage body for draining (papermaking) is composed of a rotating drum (wire cylinder) composed of a net-like body, the papermaking body 26 can be continuously formed from the raw material solution 14 and the papermaking sludge can be formed. It is possible to efficiently mass-produce the cured product. The water that has passed through the wire cylinders 22 A, 22 B, and 22 C is returned to the mixer 13 shown in FIG. 4A via the pipe 17 a and the vacuum pump 17. In this embodiment, three wire cylinders 22 A, 22 B, and 22 C are provided along the conveyor belt 23, and the papermaking body 26 is transferred to the conveyor belt 23 while being multilayered. I do. Therefore, the papermaking body 26 can be formed from the raw material solution 14 with high efficiency, and the hardened body can be efficiently mass-produced from the papermaking sludge. In this embodiment, the rotation number of the wire cylinder is set to 60 rotations. The number of rotations is preferably from 1 to: L00. This is because a papermaking product 26 can be produced from the raw material solution 14 with high efficiency, and a cured product can be efficiently mass-produced from papermaking sludge. Here, if the rotating drum is lower than one rotation, the papermaking efficiency is low. On the other hand, if the number of rotations exceeds 100 rotations / minute, it becomes difficult to form a papermaking article with a uniform thickness. In this embodiment, three wire cylinders 22 A, 22 B, and 22 C are provided in parallel, but one or more wire cylinders can be used.

The meshes of the wire cylinders 22A, 22B and 22C are formed at # 60 (the number of meshes per inch is 60). Wire cylinder 22 A, 22 B, The 2 2 C mesh is preferably # 40 to 150. This is because a papermaking product 26 can be produced from the raw material solution (slurry) 14 with high efficiency, and a high-density cured product can be efficiently mass-produced from papermaking sludge. Here, if the mesh is coarser than # 40, only the inorganic non-crystalline material comes off from the raw material solution, and the density and strength of the cured product decrease. On the other hand, if the mesh is finer than # 150, the removal of water will be poor, and it will not be possible to produce a paper from the raw material solution with high efficiency. Since floc is formed in the papermaking sludge (raw material solution) by the coagulant, the papermaking can be performed efficiently. The concentration of the raw material solution containing the papermaking sludge is desirably 3.5 to 25% by weight on a solid basis. This is because the papermaking property from papermaking sludge can be improved and the cured product can be efficiently mass-produced. That is, if the concentration is less than 3.5%, it is not possible to efficiently use a wire cylinder (filtration body) to make a paper from the raw material solution, and if it exceeds 25%, the uniformity of the product is reduced. .

The transfer belt 23 for transferring and transporting the paper formed by the wire cylinders 22 A, 22 B and 22 C is made of a 1 m wide felt, and is suspended by rollers 34. A suction box 24 is provided on the back surface, and dehydration is performed while suction is performed by a vacuum pump 17. That is, the belt 23 adsorbs the moisture of the raw material 14 including the papermaking sludge into the pores of the felt, and the adsorbed moisture is adsorbed to the vacuum pump 17 through the suction box 24. It is returned to the mixer 13 shown in A). In the first embodiment, the belt 23 is formed of a filter, but instead of this, a porous resin having continuous pores, a porous rubber, a material obtained by solidifying inorganic fibers with a binder or the like, a sintered metal A porous metal, a belt in which a block of a porous metal is fixed with a flexible binder such as rubber, or the like can be used. In the present embodiment, since the conveyor belt 23 is formed of a porous body having continuous pores and is dewatered while being conveyed by the conveyor belt 23, the moisture in the papermaking body 26 can be efficiently reduced. . In the present embodiment, the transport speed of the transport belt 23 is set to 48 in, and the wire cylinders 22 A, 22 B, 22 C, and the The rotating drum 30 and the belt conveyor 38 are driven by a motor (not shown). It is desirable that the conveying speed of the conveying belt 23 is 5 to 8 OmZ minutes. This is because a paper having an appropriate thickness can be formed from the raw material solution with high efficiency, and the cured body can be efficiently mass-produced. Where the transport speed is lower than 5 mZ If this is the case, the paper can be made thicker, but the papermaking efficiency is low. On the other hand, if the conveying speed exceeds 80 m, the paper becomes thin, it is difficult to make the thickness uniform, and the paper may be cut.

The cutting rotary drum 30, which winds and cuts the paper conveyed by the conveyor belt 23 to a predetermined thickness, is formed to have a diameter of 64 cm (outer circumference 2 m), and retains water on the surface. It has a storage groove 32 and a piano wire 31 housed in a housing groove 33 located near the groove 32. The cutting rotary drum 30 winds the papermaking body 26 conveyed from the conveyor belt 23 on the surface thereof while making it into a multilayer.

Then, when the paper body 26 reaches a predetermined thickness (1.5 cm) and is detected by a sensor (not shown), the piano wire 31 in the housing groove 33 is pushed out. At the position along the storage groove 32, the papermaking body 26 has a high moisture content, and when the piano wire 31 is extruded, it is cut along the storage groove 32, as shown in FIG. 6 (A). However, the cut end falls down on the belt conveyor 38 side. Then, with the rotation of the cutting rotary drum 30 and the transport of the velvet conveyor 38, the papermaking body 26 having a predetermined thickness is transported onto the belt conveyor 38 (see FIG. 6 (B)). Here, as shown in FIG. 6 (C), when the other cut end is conveyed to the position corresponding to the cutter 36, the cutter 36 is lowered to the belt conveyor 38 side, and the cut sheet 26 is cut. The end and the unstacked papermaking article conveyed on the conveyor belt 23 are separated.

In this embodiment, the paper body on the conveyor belt 23 is multilayered while being transferred to the rotary drum 30 for cutting, and when the multilayered paper body 26 reaches a predetermined thickness, the paper body has a predetermined size. Disconnect. Since the paper drum 26 having a uniform thickness (1.5 cm) and a size (l mX 2 m) can be continuously formed by the rotary drum for cutting, it is possible to mass-produce the cured body efficiently. Will be possible.

Further, in the present embodiment, a cutter 36 for cutting the papermaking body 26 having one end cut by the cutting rotary drum 30 at a constant interval is provided. Therefore, it is possible to efficiently form the papermaking body 26 having a predetermined length (2 m). In the present example, the thickness of the papermaking body 26 was set to 1.5 cm, but the thickness is desirably 2 cm or less. If the thickness is 2 cm or less, papermaking is easy, and handling is easy in transportation and the like.

The reversing device 40 for reversing the paper body will be described with reference to FIG. In the manufacturing apparatus of the present embodiment, as described later, the papermaking articles are stacked while being alternately inverted. Therefore, every other sheet 26 is inverted. The reversing device 40 includes a transporting device 42 for sucking and transporting the papermaking body, a table 44, a reversing plate 46 and a force. As shown in FIG. 7 (A), the papermaking body 26 on the belt conveyor 38 is placed on the reversing plate 46 by the force transfer device 42. The reversing plate 46 is driven to reverse the paper body 46 (see FIG. 7 (B)). Then, as shown in FIG. 7 (C), the inverted papermaking body 26 is transferred to the press machine 50 shown in FIG. 3 by the force transfer device 42. In addition, as described above, in the present embodiment, the binder is added to the slurry 14 so that the papermaking body 26 is made flexible, thereby facilitating the cutting after cutting.

The press 50 for dehydrating the papermaking body by applying pressure will be described with reference to FIG. 8 and FIG. As shown in FIG. 8 (A), the press machine 50 includes a female mold 54 having a concave portion 54A, and a female mold 52 fitted into the concave portion 54A. In addition, fine through-holes 54a and 52a are formed in the Os type 52 for extracting water generated when the paper is pressed. The press machine 50 is provided with a curtain coater 56 for applying the raw material solution 14 to the papermaking body 26 (see FIG. 8 (B)).

Lamination and pressurization in the press machine 50 will be described. First, as shown in FIG. 8 (A), as a lowermost layer, the concave portion 54A of the female mold 54 is inverted by the inverting device 40 described above with reference to FIG. 7 (C). The papermaking body 26 having the contact surface side with the cutting rotary drum 30 turned downward is carried in by the carrier device 42. Next, as shown in FIG. 8 (B), the raw material solution 14 is applied by a curtain coater 56 to the upper surface of the papermaking body 26, that is, the bonding surface with the upper layer papermaking body. The amount of the raw material solution is preferably 50 g / m ² to 500 g Zm ² in solid content per one layer of the papermaking body. Here, the curtain coater 56 is used, but various coating devices such as a roll coater can be used.

As shown in FIG. 8 (C), as the second layer of the paper, the paper 26 on the belt conveyor 38 is not inverted, and is transferred to the recess 54 A of the female mold 54 without being inverted. Will be carried in. Then, as shown in FIG. 9 (A), after applying the raw material solution 14, the inverted papermaking body 26 of the third layer is placed, and after applying the raw material solution 14, the four layers are formed. The non-inverted paper 26 of the eye (top layer) is placed and the lamination is completed. This In this case, four layers are laminated, but any number of two or more may be used, and even one thin film can be used to produce a thin cured product.

Thereafter, the Os type 52 is depressed, and the press is performed with 6 O KgA ^ m ² (see FIG. 9 (B)). At this time, the water seeping out of the papermaking body 26 is led out through the holes 54a and 52a. Thereafter, the female mold 52 is raised (see FIG. 9 (C)), and the composite cured body 1 formed by pressurization is taken out of the female mold and transported to the dryer 60. In the present embodiment, since the pressurization is performed in the mold (concave 54A), even if the pressurization is performed at a high pressure, the papermaking body 26 does not break apart, and the high-strength cured body 1 can be produced from papermaking sludge at a high yield. Can be manufactured. In addition, since the female mold 52 and the female side 54 have through holes 52 a and 54 a for draining water leaking from the papermaking body 26, dehydration is performed at the time of pressurization, and subsequent drying is performed. Curing process can be completed in a short time. Moreover, since a plurality of papermaking sludge papermaking products are laminated with the raw material solution 14 interposed therebetween, a multilayered cured product free of peeling can be produced.

Pressure press is Shi hoped that perform N 1 0 ~ 2 5 O Kg in m ^2,. If the pressing is performed at less than 10 kg m ² , the required strength cannot be obtained. On the other hand, the strength cannot be increased by press-pressing exceeding 25 O Kg m ² , and the press machine becomes larger and more expensive.

In this example, a plurality of papermaking sludge papermaking products obtained by papermaking a raw material solution using a wire cylinder (filtration body) are laminated. Since it is inefficient to obtain a thick paper body by papermaking, a thin paper body is efficiently formed from papermaking sludge and a cured body having the required strength and thickness is produced by laminating the paper sheets. As a result, the cured product is efficiently mass-produced from papermaking sludge.

Further, in the production method of this example, the papermaking sludge is formed into a thickness of 2 Omm or less, so that papermaking sludge is efficiently produced and laminated to produce a cured body having the required strength and thickness. I do. For this reason, it is possible to efficiently mass-produce the cured product from papermaking sludge.

In the present embodiment, the papermaking bodies 26 are laminated while alternately reversing the lamination surface. That is, since the papermaking body 26 is laminated while reversing the direction in which the warpage occurs, the cured body 1 obtained by laminating the papermaking body 26 does not warp and delamination does not occur. In addition, the exposed surface of the uppermost and lowermost papermaking products shall be the surface in contact with the rotating drum, Since the uneven surface in contact with the transfer belt 32 made of felt is set inside, the surface of the laminated cured body can be smoothed.

Further, in the present embodiment, since a flocculant is added to the raw material solution containing papermaking sludge to cause coagulation, the cured product 1 having a uniform specific gravity (range of 1.2 to 1.3) can be mass-produced from papermaking sludge. it can. Further, in the present embodiment, since the lamination is performed in the female mold 54, it is not necessary to transfer the laminated papermaking body, which is suitable for mass production. In the present embodiment, the layers are stacked in the mold 54, but it is also possible to transfer the sheets into the mold after the lamination.

After dehydrating and drying under pressure with the above-mentioned press machine 50 to reduce the water content, it is then completely dehydrated with a dryer 60 shown in FIG. 3 to advance the curing reaction. The dryer 60 includes an electric heater 62 and a fan 64, and performs drying at a temperature of 80 to 200 ° C. The dryer 60 includes the electric heater 62, but an infrared heater, a steam, a solar dryer, or the like can be used instead.

The cured body 1 that has passed through the drying step is further conveyed and cut into a predetermined size by a cutting machine (not shown). Cutting is performed with a cutter or a saw placed on the conveyor. Finally, the cut composite cured body 1 is inspected for warpage or the like by an inspection machine (not shown). An X-ray sensor, infrared sensor, etc. can be used as the inspection machine. Also, the presence or absence of chipped cracks may be inspected by an image processing device or the like.

Here, the relationship between the laminating direction (the laminating direction) of the paper body and the occurrence of delamination will be described with reference to FIG. 10 and FIG.

On the right side of FIG. 10 (A), a case is shown in which the papermaking body 26 is inverted and the felt contact surface side constituting the conveyor belt is adhered. Here, the papermaking body 26 retains stress when wound by the cutting rotary drum 30 shown in FIG. 3, and warps in the winding direction even after cutting. The left side in the figure shows the cross section of the laminated papermaking body 26, and the irregularities in the figure show the felt contact surface. In this embodiment, the bonding direction shown in FIG. 10 (A) is adopted.

FIG. 10 (B) shows a case where the papermaking bodies 26 are laminated without being inverted. Further, FIG. 10 (C) shows a case where the papermaking body 26 is inverted and stuck on the cutting drum abutment surface side.

FIG. 11 is a chart showing the relationship between the direction of laminating the papermaking product and the occurrence of delamination, and the relationship between the pressure and the strength in a press machine. In the chart, the coating amount indicates the coating amount of the raw material solution 14 between the paper bodies, the pressure indicates the pressure in the press machine, the time indicates the pressing time, and the density indicates the pressure before drying. This is the density of the cured product, and the maximum load indicates the load that the cured product can withstand after drying, that is, the strength. The water content is a value after pressurization. The contraction rate thickness indicates the contraction rate in the thickness direction, the contraction rate length indicates the contraction rate in the length direction, and the contraction rate width indicates the contraction rate in the width direction. Here, five sheets of paper are laminated, the number of peeled layers is the number of peeled layers in the five sheets, the number of peeled sides is the number of peels occurring in four corners, and the peel length. Indicates the total extension of the part where peeling has occurred.

First, it can be seen that the maximum load can be increased by increasing the pressure. In addition, it is found that delamination can be completely prevented by adopting “A” shown in Fig. 10 (A) as the tension direction and applying a pressure of 6 OKg / cm ² (see No. 9). In the present embodiment, since papermaking sludge is used as a raw material, the shrinkage is large, and during drying, the stress remaining when wound on the rotary drum 30 for cutting acts to easily cause peeling. Inverting and bonding the papermaking body can prevent peeling. In the present embodiment, the papermaking product is inverted every other layer. However, warping and delamination can be prevented by alternately inverting every third layer or every third layer. .

(1) When the amounts of Si, A1, and Ca are changed

An example of analyzing the composite cured product obtained in the above-described steps using a fluorescent X-ray analyzer (Rigaku RIX2100) is shown below. '

Example 11

It was found that the composition was as follows in terms of oxide. The pulp was calcined at 1100 ° C and measured from the weight loss.

Record

Pulp: 51.4 Weight ⁰ SO 3: 0.5

S i O 2: 24.2% by weight, P 2 O 5: 0.2

A 1 2 O 3: 14.0 weight. C1: 0.2

C a O: 8.0% by weight, Z ηθ: 0

Mg O: 1.4 wt%, other:

T i O 2: 1.0% by weight, Example 11

Unfired of paper sludge (paper sludge of high-quality paper for OA equipment Maki Paper Co., Ltd., which Maruhigashikamazaisha handled "raw sludge": solid content of 51 weight ^_0/0, water 49 weight ^_0/0) prepare a 1500 g did. This was made as in Example 1.

The composition was analyzed using a fluorescent X-ray analyzer (Rigaku Corporation RIX2000). The oxide conversion values are shown below. The amount of pulp was calculated from the weight loss when firing at 1100 ° C. X-rays showed calcium carbonate peaks. Itokatsusei is the amount including carbonic acid ruthenium.

For the amount of calcium carbonate, a calibration curve was created based on the height of the maximum peak at around 20 = 29 ° in the X-ray diffraction chart and the content of calcium carbonate, and the content of calcium carbonate was measured. Since the calibration curve depends on the equipment, it is necessary to re-create the calibration curve when performing a diffraction test with a different equipment. In the present application, miniF1ex manufactured by Rigaku Corporation was used. As a result, it was about 11% by weight. In addition, from the mapping images of Ca and O of X-ray fluorescence, the habit of crystal of calcium carbonate was presumed to be spindle-shaped.

Composition of cured papermaking sludge of Example 1-2

Pulp 53. Mg O 3% by weight

S i 0 ₂ 15, 7% by weight so ₃ : 0.8% by weight

A 1 ₂ 0 ₃ 9 7% by weight P ₂ O ₅ : 0 8% by weight

C a O 16. C 1 0.

Tio ₂ Ζηθ: 0.6% by weight

F e O 0.2% by weight

Other Examples 11

Unsintered paper sludge (Makito Paper Co., Ltd.'s Maki Paper Co., Ltd.'s papermaking sludge for high-quality paper for office automation equipment "raw sludge": solid content 51% by weight, water content 49% by weight) 73 g of calcium (average diameter 2 m, Tamapearl TP-121, Okutama Kogyo Co., Ltd.) was added. This was made as in Example 1.

Example 13 Composition of Hardened Paper Sludge of 1-3

Pulp 50.4% by weight Mg O: 2% by weight

sio ₂ : 14.9% by weight SO 7% by weight

A 1 ₂ 0 ₃ 9. ₂ wt% P ₂ O ₅ 0 7 wt%

C a O 20.6% by weight C 1: 0.3% by weight

T io ₂ 1. 0 wt% Z n O: 0 6% by weight

F e O 0.2% by weight

Other trace amount Example 1 1 4

Unfired papermaking sludge (of OA Zelkova dexterity Maki papermaking Corporation Maruhigashikamazaisha handled fine paper Paper Sludge "raw sludge": solids 51 weight ^_0/0, water 49 weight ^_0/0) 1 500 g To the mixture, 219 g of columnar light calcium carbonate (average diameter 2 m, Okutama Kogyo Co., Ltd. Tamapearl TP-123) was added.

The composition was analyzed using an X-ray fluorescence analyzer (trade name: R1X2100, manufactured by Rigaku Corporation). The content of calcium carbonate was measured. As a result, it was about 30.8% by weight.

Composition of cured papermaking sludge of Examples 1-4

Pulp 45.7% by weight MgO: 1.

S io _2: 13. 5 wt% SO 3: 0. 7 wt%

A 1 ₂ 0 ₃ 8. 4 wt% P ₂ 0 _5: 0. 7 wt%

C a O 27.9% by weight C 1: 0.3% by weight

Tio ₂ : 0% by weight Z ηθ: 0.5% by weight

F e O 0.

Other trace amount Example 11

103 parts by weight of a fired product of papermaking sludge (trade name: Cyclone Ash, manufactured by Maruto Kiln Co., Ltd.) and 1209 parts by weight of the unfired papermaking sludge of Example 1-1 were kneaded. Next, a composite cured product was produced in the same manner as in Example 1.

The composition of the calcined sludge was analyzed using a fluorescent X-ray analyzer (RIX2100 manufactured by Rigaku) and converted into each oxide as follows. The specific gravity was 0.9.

(Fired paper sludge)

Composition of fired papermaking sludge

S i O, 34 Mg O: 60% by weight

A 1 ₂ 0 _3: 20 7 wt% P ₂ O _5: 2. 7 wt%

F e ₂ 0 _3: 12 4 wt% T i 0 _9: 1 0 wt%

C a O: 21.3% by weight SO 0

ZnO: 0. C1: 0.2% by weight

Other Examples 11-6

Ten core paper impregnated with phenolic resin kraft paper having a basis weight of 80 g / cm ² are laminated, and at 140 ° C, 80 k gZ cm 2 pressurized with veneer. This decorative board was bonded to both surfaces of the cured product of Example 1 with a vinyl acetate adhesive.

Example 11

10 weight of Portland cement to the papermaking sludge yarn且成Example 1 2 ^_0/0 were added.

Composition of cement

S i 0 _2: 22. ₂ wt% SO _3: 1. 6 wt%

A 1 ₂ 〇 _3: 5.1 wt ^_0/0 Mg O: 1. 4 wt ^_0/0

C a O: 65.1% by weight

F e O: 3.2% by weight

Other Examples 11

Unfired papermaking sludge (Low quality paper for OA equipment of Nakamura Paper of Maruto Kiln Co., Ltd .: 34% by weight of solid content, 66% by weight of water) 3020 parts by weight were prepared. next, Using a 2N hydrochloric acid aqueous solution, acid washing was performed to almost completely remove the Ca component.

A

Pulp: 5 2% by weight gO 6% by weight

S i O ,: 8 6 z so ₃ 3-fold: 1%

_{A 1, 0 3:. 22} 3 wt% p, o, 0.

C aO: 00% by weight C I: 0.1% by weight

Z ηθ: 02% by weight

Others Papermaking sludge of Maki Paper Co., Ltd.'s inkjet printer paper handled by Maruto Kiln Co., Ltd .: solid content 51% by weight, water content 49% by weight was set to 8.

Β

Pulp: 21.8% 萤% S i〇 ₇ : 46% by weight

A 1 ₂ 0 _3: 7. 5 wt% Ρ ₂ θ ₅ 0 1 wt%

C aO: 65.0% by weight Na ₂ 0: 0 2% by weight

SO _s : 0.2% by weight

Other trace

The amount of calcium carbonate was 55% by weight. In addition, Maruto Paper Co., Ltd.'s papermaking sludge for Maki Paper Co., Ltd.'s inkjet printer paper: 51% solids, 49% moisture and calcium carbonate (cubic) ) Was added as 10% by weight to obtain C.

C

Pulp: 15.0% by weight S i 0 ₂ 2.6% by weight

A 1 ₂ 0 _3: 5. 5 wt% P ₂ O _s 0. 1 wt%

C a〇: 75.0% by weight N _az O: 0 2% by weight

S O 3: 0.2% by weight

Other trace

The amount of calcium carbonate was 65% by weight Samples were prepared by appropriately mixing A, B, and C as described above, and a sheet was formed in the same manner as in Example 1 to produce a cured product, and the flexural strength, compressive strength, and nailability were measured.

The results are shown in the graphs of FIGS. Here, Fig. 15 shows the relationship between Ca O / S i 0 ₂ and compressive strength. The vertical axis shows the compressive strength (KgZcm ² ), and the horizontal axis shows the ratio of Ca O / S i 0 _2. It is. The first 6 diagram shows the relationship between the compressive strength and _{C a O / A 1 2 0} 3, compression strength in the vertical axis (KgZcm ²⁾ on the horizontal axis are taking the ratio of C a OZA 1 ₂ 0 _3. The first 7 figure shows the relationship between C a O content and the bending strength and compressive strength of the content of C a O on the horizontal axis to the vertical axis bending strength and compression strength (KgZcm ²⁾ (percent) I have. FIG. 18 shows the relationship between the content and the nail pull-out strength of the C a O, the content of C a O nail pull strength (Kg / cm ²⁾ on the horizontal axis to the vertical axis (%) is connexion preparative. As shown in Figure 15, the cured bodies, C a, A l, the amount of S i is, respectively it _{C a 0, A 1 2 0} 3, in terms of _{S i 0 2 C a O /} S i when 0 ₂ ratio 0.2 of 7.9, exhibits a high compressive strength. On the other hand, as shown in the first FIG. 6, the cured product, the ratio of C a OZA 1 ₂ 0 ₃ exerts a higher compressive strength at the time of 0.2 Kakara 12.5. Comparative Example 11

1512 g of unfired papermaking sludge (Maruto Kiln Co., Ltd. product name “raw sludge”: solid content 34% by weight, water content 66% by weight) were prepared. The papermaking sludge was then poured into a mold having an area of 180 OmmX 1000 mm. Then, insert a stainless steel plate, a punched metal plate, and a non-woven fabric, insert 45 push rods with a cross section of 19 Omni, and pressurize for 5 minutes while applying a pressure of 60 kgf Zcm ^{2 in} a pressure rise time of 30 minutes. A sheet-shaped molded body having a thickness of 10 mm was obtained. This sheet-like molded body was heated at 100 ° C. to obtain a plate-shaped composite cured body. The specific gravity was 1.2. When the composite cured product obtained by the forcing was analyzed using a fluorescent X-ray analyzer (RI X2100 manufactured by Rigaku), it was found to be the following oxide in terms of oxide. The pulp was calcined at 110 ° C and measured from the weight loss.

Record Pulp 51.4% by weight Mg O: 4% by weight

S i 0 ₂ 24. so ₃ 0.5% by weight

A 1 O, 14 0 wt% P ₂ O ₅ 0

C a O 8.0 wt% C 1: 0.2 wt%

T io ₂ 0 wt% Z ηθ 0.

Other

Calcium carbonate was 9.8% by weight.

Comparative Example 11

Example 11 The papermaking sludge of Example 1 was washed with 1 N hydrochloric acid to remove calcium carbonate, and then 84 g of spherical calcium carbonate (average diameter 2 / m, Okutama Kogyo Co., Ltd. C-90) was added. About 11% by weight based on the solid content. However, in papermaking, calcium carbonate was hardly incorporated into the cured product. Comparative Example 1-3

_C Comparative Example 1 one 4 with the addition of 55% by weight of Portland cement to the papermaking sludge of Example 1-2

In Comparative Examples 1 to 4, the bending strength, compression strength, workability and nailing properties, and fracture toughness of the composite cured bodies obtained in Example 1 and Comparative Example 1 which were not dehydrated and suctioned with the conveyor belt and obtained in Example _{c and} above were used. A test was conducted for abrasion resistance. The results are shown in Table 1. The test method was measured according to the method specified in JISA 6901 for flexural strength and the method specified in JISA 5416 for compressive strength. The workability was determined by cutting with a circular saw for woodwork. Furthermore, regarding nailing properties, nails with a diameter of 4 mm and a length of 50 mm were nailed and checked for cracks. The fracture toughness value was calculated from the length of the crack generated by indenting the indenter using a Vickers hardness tester (MVK-D, Akashi Seisakusho). Young's modulus was calculated from the curve of the bend fracture test, 1. a 2. 7 kgf Zc m ² to 4, using this value. Munsell color chart was used for lightness.

【table 1】 Bending strength Workability Nail crushing Fracture toughness Day kgy cm ² kgcm ² MP am ^1/2 Example 1-1 3 30 o nj Workable None 3.3 7 Example 1-2 3 3 5 o O Ό Π U Processing possible None 3. 3 7 Example 1-3 340 pc

O Ό O Processing possible None 3.3 i. O Example 4 4 50 Qn Processing possible None 3.2 (O O Example 1-5 3 30 Q c Π

KJ Processing possible None 3.2 I

Q Π

Husband 1 talli o ο o ο π U o O U no ~ Γ "5Τ

JU 丄^P J No 1 O.o (Example 1-7 3 1 0 800 Machinable None 3.16 Comparative Example 1-1 300 8 50 Machinable None 3.00.4 Comparative Example 1-2 280 790 Processing possible None 3.5 4 Comparative example 1-3 1 80 300 Processing not possible Available 2.54 Comparative example 1-4 3 1 0 8 50 Processing possible None 3. 0 7 The crystal structure of the body was confirmed by X-ray diffraction, and the charts of the X-ray diffraction are shown in Fig. 12 and Fig. 13. The X-ray diffraction was performed using Mini F 1 ex manufactured by Rigaku. 20 = 15 ° to 30 °, a gradual undulation was observed, and a peak indicating the crystal structure was also observed. It can be seen that are mixed. From the peak, calcium carbonate crystals (Ca1 site) were identified.

The lightness is higher as the amount of cement is smaller and the amount of CaO is larger. Also, the papermaking method has higher brightness than the press method. Furthermore, calcium carbonate with horns is easier to take in by the papermaking method and can increase the brightness.

(2) A case in which the number of rotations of the rotating drum is changed will be described below as a second embodiment.

If the rotation speed of the rotating drum is less than one time // minute, the paper is oriented in the thickness direction of the paper body, causing variation in strength.If it exceeds 100 times, the fiber is oriented in the rotation direction and the strength is reduced. Vary. In Example 2, the synthetic fiber was incorporated by papermaking, and the improvement of the strength and the improvement of the fracture toughness more than simply mixing with the raw material and performing dehydration pressing were performed. realizable.

The reason for this is that the synthetic fibers are taken into the cured body in an extended state. The manufacturing conditions of Example 2 and Comparative Example 2 are as follows. Five papermaking bodies were stacked and turned over to form a multilayer.

[Table 2]

Papermaking sludge Coagulant Cement Vinylon fiber Rotation speed Example 2-1 95% 3% 0% 2% 2.0 Example 2-2 90% 2% 5% 3% 20 Example 2-3 98% 0.1% 0% 1.9% 40 Example 2-4 80% 0.02% 1 5% 4.98% 50 Example 2-5 70% 3% 25% 2% 60 Example 2-6 90% 2% 0% 8% 80 Example 2- 7 65% 5% 28% 2% 100 Comparative example 2-1 95% 0% 0% times

5% 0.8 Comparative Example 2-2 95% 0% 0% 5% 105 Comparative Example 2-2 was not multilayered and used was 2 Omm.

The cured composites obtained in Example 2 and Comparative Example 2 were tested for flexural strength, compressive strength, workability and nailing, fracture toughness, and wear resistance. The results are shown in Table 3. For the amount of warpage, the maximum amount of warpage of the cured product having a length of lm was measured.

[Table 3]

Bending strength Compressive strength Workability Nail punching fracture toughness Lightness

kg / cm "kg.cm MP a m 1/2

Example 2-1 330 850 Machinable None 3.3 7

Example 2-2 335 860 Machinable None 3 3 7

Example 2-3 340 865 Machinable None 3 3 7

Example 2-4 308 800 Processing possible None 3 5 5 Example 2-5 310 800 Processing possible None 3 5 5 Example 2-6 330 850 Processing possible None 3 3 7 Example 2-7 3 1 0 800 Machinable None 3.3 3.5 Comparative Example 2-1 2 70 8 50 Machinable None 3.07

Comparative Example 2-2 3 7 5 8 50 Machinable None 3.07

5 Example 2-1 1.5

Example 2-2 1.5

Example 2-3 2.0

Example 2-4 1.8

Example 2-5 2.0

Example 2-6 2.0

Example 2-7 1.8

Comparative Example 2-1 8.9

Comparative Example 2-2 9.0

(3) A third embodiment in which the mesh of the rotating drum is changed will be described below.

If the mesh of the rotating drum is coarser than # 40, only the inorganic amorphous material comes off from the raw material solution, and the density and strength of the cured product decrease. On the other hand, if the mesh is finer than # 150, the removal of water will be poor, and it will not be possible to produce a paper from the raw material solution with high efficiency. In addition, moisture is left and voids are formed by drying, so that the density is reduced. Also, if it is less than # 40 (that is, the eyes are coarse), calcium carbonate that imparts whiteness cannot be incorporated, and if it exceeds # 150 (that is, the eyes are fine), impurities will be removed. The brightness is reduced in any case.

The composition of the solid content and the mesh of the network of Example 3 and Comparative Example 3 are as follows.

[Table 4]

Papermaking sludge flocculant cement vinyl fiber solids Messiko Example 3-1 95% 3% 0 0.5 ° / c 4 ° / 40 Example 3-2 90% 2% 5 3 ° / c 5 ° A 50 Example 3-3 98% 0% 0 ° 2 ° / c 1 ^0ο 70 ") ife SilQ O Λ 0 / \ 0/0 /

o U r

0 U 1 1 C O /

O yo 5 1 r 0 /

Asahi 1 Tari

Q »0 /

Failure 1 tally <3 ri y U 0 /

70 Δ yo U yo o 0 /

0 yo 5 yo 1 z u ken 她 1 Tari << 3— /

Ό O To o o / O \ 0

2% 25% 1 50

0 Comparative example 3-1 9 5% 3% 0% 0% 3% 1 0 Comparative example 3-295% 3% 0% 0% 3% 2 0 0 Comparative example 3-3 9 5% 3% 0% 0% 3% 2 5 0 Comparative Example 3-4 8 0% 0% 10% Gypsum 10% 5% 100 0 Flexural strength and pressure of the composite cured body obtained in Example 3 and Comparative Example 3 above.丄 U We conducted tests on shrink strength, workability and nailing, fracture toughness, and abrasion resistance.

Table 5 shows the results.

[Table 5]

Bending strength Compressive strength Workability Nail crush Fracture toughness Lightness Specific gravity kg / 'cm ² kg / cm ² MP am ^1/2

1 ιΰc Example 3-1 3 3 0 8 5 0 Processing possible None 3.3 7 1.2 Example 3-2 3 3 5 8 6 0 Processing possible None 3.3 7 1.2 Example 3-3 34 0 8 6 5 Processing possible None 3.3 7 1.2 Example 3-4 3 0 8 8 0 0 Processing possible None 3.1 1 5.5 1.1 Example 3-5 3 1 0 8 0 0 Processing Possible None 3.1 5.5 1.1 on

U Example 3-6 3 3 0 8 5 0 Processing is possible None 3.3 7 1.2 Example 3-7 3 1 0 8 0 0 Processing is possible None 3.3 5.0 1.1 Comparative example 3-1 2 9 0 8 5 0 Processing possible None 3.04 1.0 Comparative example 3-2 2 9 0 8 5 0 Processing possible None 3.04 1.0 Comparative example 3-3 2 7 0 7 5 0 Processing possible None 2.8 4 1.0

25 Comparative Example 3-4 2 7 0 7 5 0 Processing not possible Available 2.85 1 1.0

(4) Example 4 in the case where the solid content in the raw material solution was changed is described below. If the concentration is less than 3.5%, the concentration is too low and it takes time to secure the thickness, and as the time elapses, the concentration decreases and the uniformity in the thickness direction decreases.

If it exceeds 30 25%, the in-plane uniformity of the product decreases. For this reason, drying Occurs.

The compositions of the solid components of Example 4 and Comparative Example 4 are as follows.

[Table 6]

Papermaking sludge flocculant cement vinylon fiber solids

关她1 data ¹ J 4 over丄0/0 /

70 U 0 /

To 7o 4

"

夹 land 1 tally 4-u 0 /

TO 50% / 37o 5

Example 4-3 98% 2% 0% 0% 10

Example 4-4 80% 5% 15% 0% 1 5

Example 4-5 70% 3% 20% 2% 5

Example 4-6 95% 3% 0% 2% 25

Example 4-7 65% 3% 30% 2% 25

Comparative Example 4-1 95% 3% 0% 2% 3

Comparative Example 4-2 95% 3% 0% 2% 30

Comparative Example 4-3 65% 3% 35% 2% 15

Comparative Example 4-4 80% 0% 10% Gypsum 10% 5 Regarding the composite cured product obtained in Example 4 and Comparative Example 4, bending strength, compressive strength, workability and nailing property, fracture toughness, A test was performed for abrasion. Table 7 shows the results. For the amount of warpage, the maximum amount of warpage of the cured product having a length of lm was measured.

[Table 7]

Bending strength Compressive strength Workability Nail crush Fracture toughness Lightness Warp kg / cm ² kg x cm ² MPa • m ^1/2 mm Example 4-1 330 850 Workable None 3.3 7 2.2 Example 4- 2 335 860 Processing possible None 3.3 7 2.0 Example 4-3 340 865 Processing possible None 3.3 7 4.0 Example 4-4 308 800 Processing possible None 3.1 5.5 3.6 Example 4-5 310 800 Processing possible None 3.1 1 5.5 2.0 Example 4-6 330 850 Processing possible None 3.3 7 4.0 Example 4-7 310 800 Processing possible None 3.3 5. 0 4.0 Comparative Example 4-1 330 850 Machinable None 3.0 0 10.0 Comparative Example 4- 2 330 850 Machinable None 3.00 1 12.0 Comparative Example 4-3 270 750 Machinable None 2.8 4 3.6 Comparative Example 4 -4 270 750 Processing not possible Available 2.8 4 3.6

(5) Example 5 when the speed of the conveyor belt is _changedc

The manufacturing conditions of Example 5 and Comparative Example 5 are as follows.

[Table 8]

Papermaking sludge flocculant cement vinylon fiber speed

Example 5-1 95% 3% 0% 2% 5 Example 5-2 90% 2% 5% 3% 10 Example 5-3 98% 0.1% 0% 1.9% 20 Example 5-4 80 % 0.02% 15% 4.98% 30 Example 5-5 70% 3% 25% 2% 50 Example 5-6 90% 2% 0% 8% 60 Example 5-7 65% 5% 28% 2 % 80 Comparative Example 5-1 95% 0% 0% 5% 3 Comparative Example 5-2 95% 0% 0% 5% 85 Flexural strength of the composite cured body obtained in Example 5 and Comparative Example 5 above, Tests were conducted on compressive strength, workability and nailing, fracture toughness, and abrasion resistance. Table 9 shows the results. The thickness variation is calculated by dividing the lm square plate by 100, measuring the thickness, calculating the average value, dividing the difference between the maximum value and the minimum value by the average value, and calculating the percentage (% ).

[Table 9]

kg / cra k gZcm ² MP am ^1/2

Example 5-1 330 850 Machinable None 3.3 7

Example 5-2 335 860 Machinable None 3.3 7 Example 5-3 340 865 Processing possible None 3.3 7

Example 5-4 308 800 Processing possible None 3.15 5 Example 5-5 310 800 Processing possible None 3.15 5 Example 5-6 330 850 Processing possible None 3.3 7

Example 5-7 310 800 Processing possible None 3.3 5 0 Comparative example 5-1 330 850 Processing possible None 3.07

Comparative Example 5- 2 330 850 Machinable None 3.07 Thickness variation%

Example 13%

Example 2 3%

Example 3 3%

Example 4 4%

Example 5 4%

Example 6 3%

Example 7 3%

Comparative Example 1 7%

Comparative Example 2 8% (6) Example 6 in which the pressure of the press was changed is described below.

The pressure press is performed at 10 to 250 Kg / cm ² . If the pressing is performed at less than 10 kg / cm ² , the required strength cannot be obtained. On the other hand, even if the pressure exceeds 250 kg / cm ² , the strength cannot be increased even if the press is performed, and the press device becomes larger and more expensive. Further, if it is less than 10 kgZcm ² , voids are formed, the strength is low, and peeling and warping occur. Conversely, if it exceeds 250 kgZcm ² , the fibers will be oriented in the direction in which the pressure is applied, and the strength will also decrease, causing peeling and warping. In papermaking, the fibers are easily oriented by nature, and high pressure is rather inconvenient. The manufacturing conditions of Example 6 and Comparative Example 6 are as follows. Five papermaking bodies were stacked and turned over to form a multilayer.

[Table 10] Papermaking sludge flocculant ヒーヒー

/ / c -.m 2

An example of Kanrin — 1 Q c: 70 U 70 U

J qn% o To O 70 o yo o U

f

Example 6-4 80% U./o 4, yo / o Ό U Example 6-5 70% 3% 25% 2% 100 Example 6-6 90% 2% 0% 8% 1 50 Example 6 -7 65% 5% 28% 2% 250 Comparative example 6-1 95% 0% 0% 5% 8 Comparative example 6- 2 95% 0% 0% 5% 255 Comparative example 6-2 And 20 secret ones.

With respect to the composite cured product having a thickness of 20 mm obtained in Example 6 and Comparative Example 6 described above, tests were performed on bending strength, compressive strength, workability and nailing properties, fracture toughness, and abrasion resistance. Table 11 shows the results. The test method was measured in accordance with the method specified in JIS A 6901 for flexural strength and the method specified in JIS A 5416 in compressive strength. The amount of warpage was measured on a 1 m square plate with a thickness of 20 mm [Table 11]

k g. cm "kg / cm ² MP a • m

Example 6-1 320 850 Processing possible None 3.3 7

Example 6-2 335 860 Processing possible None 3.3 7

Example 6-3 340 865 Machinable None 3.3 7

Example 6-4 308 800 Processing possible None 3.15.5 Example 6-5 310 800 Processing possible None 3.15.5 Example 6-6 330 850 Processing possible None 3.3 7

Example 6-7 310 800 Machinable None 3.3 3.5 Comparative Example 6-1 270 850 Machinable None 3.07

Comparative Example 6-2 275 850 Machinable None 3.07 (7) The following describes Example 7 in which the layers are inverted and Comparative Example 7 in which the layers are sequentially stacked.

The manufacturing conditions of Example 7 and Comparative Example 7 are as follows. Five papermaking bodies were laminated to form a multilayer.

[Table 1 2]

Papermaking sludge coagulation | J

Fiber Multilayer Example 7-1 95% 3% 0% 2% Inversion Example 7-2 90% 2% 5% 3% Inversion Example 7-3 98% 0.1% 0% 1.9% s Example 7-4 80% 0.02% 15% 4.98% Inversion Example 7-5 70% 3% 25% 2% Inversion Example 7-6 90% 2% 0% 8% Inversion Example 7-7 65% 5% 28% 2% Invert Comparative example 7-1 95% 0% 0% 5% Order Comparative example 7-2 95% 0% 0% 5%

In Comparative Example 7-2, 20 layers were used without multilayering.

With respect to the composite hardened body having a thickness of 20 and obtained in Example 7 and Comparative Example 7 described above, tests were conducted on bending strength, compressive strength, workability and nailing properties, fracture toughness, and abrasion resistance. Table 13 shows the results. The amount of warpage was determined by measuring the maximum amount of warpage of the lm square hardened body having a thickness of 20 mm.

[Table 13]

Bending strength compression strength workability nail out of fracture toughness lightness ^{^{kg / cm 2 kg / cm 2}} MP a · m 1, 2

Example 7-1 330 850 Processing possible None 3.3 7 Example 7-2 335 860 Processing possible None 3.3 3 Example 7-3 340 865 Processing possible None 3.3 3 Example 7-4 308 800 Processing Possible None 3. 1 5.5 Example 7-5 310 800 Processing possible None 3. 1 5.5 Example 7-6 330 850 Processing possible None 3. 3 7 Example 7-7 3 10 800 Processing possible None 3.3 5.0 Comparative example 7-1 330 850 Processing possible None 3.07 Comparative example 7-2 330 850 Processing possible None 3.07 Warpage Amount of peeling

Thigh

Example 7-15

Nothing

Example 7-2

Example 7-3 2

Example 7-4

Example 7-5 2

Example 7-6 2.0

Example 7-7 1.8

Comparative Example 7-1 8.9

Comparative Example 7-2 9.0

(8) Example 8 in which the amount of the coagulant was changed will be described.

When the amount of the coagulant is less than 0.01% by weight, there is no coagulation effect, and there is no effect of preventing warpage or equalizing the specific gravity and strength. On the other hand, if the content exceeds 5% by weight, the coagulant causes the cured product to be non-uniform, resulting in warpage, specific gravity, and non-uniform strength.

The compositions of the solid components of Example 8 and Comparative Example 8 are as follows.

[Table 14]

Papermaking sludge flocculant Cement vinylon fiber solids Example 8-1 95% 3% 0% 2% 4% Example 8-2 90% 2% 5% 3% 5% Example 8-3 98% 0.1% 0% 1.9% 10% Example 8-4 80% 0.02% 15% 4.98% 1 5% Example 8-5 70% 3% 25% 2% 5% Example 8-6 90% 2% 0% 8% 25% Example 8-7 65% 5% 28% 2% 25%

Comparative Example 8-1 95% 0% 0% 5% 5%

Comparative Example 8-2 88% 2% 0% 0% 5%

The composite cured products obtained in Example 8 and Comparative Example 8 were tested for flexural strength, compressive strength, workability and nailing properties, fracture toughness, and abrasion resistance. For the amount of warpage, the amount of warpage of a lm square plate was measured. The variation was measured by dividing the lm square plate into 100 parts, measuring the strength and specific gravity, calculating the average value, dividing the difference between the maximum value and the minimum value by the average value, and displaying the percentage (%). .

[Table 15]

Bending strength Compressive strength Workability Nail crush Fracture toughness Lightness Warpage kg / cm ² kg / cm ² MPa • m 1/2

Example 8-1 330 850 Processing possible None 3.3 7 2.0 Example 8-2 335 860 Processing possible None 3.3 7 2.0 Example 8-3 340 865 Processing possible None 3.3 7 2. 0 Example 8-4 308 800 Machinable None 3.1 5.5 5.3.0 Example 8-5 310 800 Machinable None 3.1 1 5.5 3.0 Example 8-6 330 850 Machinable None 3 3 7 2.0 Example 8-7 31 0 800 Machinable None 3.3 3.5.0 3.0 Comparative Example 8-1 330 850 Machinable None 3.00 10.0 Comparative Example 8-2 330 850 Machinable None 3. 0 7 10.0 Specific gravity variation% Strength variation% Example 8-1 3% 3%

Example 8-2 3% 3%

Example 8-3 3% 3%

Example 8-4 4% 4%

Example 8-5 4% 4%

Example 8-6 3% 3%

Example 8-7 3% 3% Comparative Example 8-1 7% 7%

Comparative Example 8-2 8% 8%

(9) Example 9 in which the amount of organic fiber was changed will be described.

If the amount of the organic fiber is less than 0.1% by weight, there is no reinforcing effect and the molded article cannot be broken. On the other hand, if it exceeds 10% by weight, voids increase to increase the moisture content, and the beam breaks. Easy to occur.

The compositions of the solid components of Example 9 and Comparative Example 9 are as follows.

[Table 16]

Papermaking Sludge Coagulant Cement Vinylon Fiber Solids Example 9-1 95% 3% 0% 0.5% 4% Example 9-2 90% 2% 5% 3% 5% Example 9-3 98% 0% 0% 2% 10% Example 9-4 80% 0% 15% 5% 15% Example 9-5 70% 3% 20% 2% 5% Example 9-6 90% 2% 0% 8% 25% Example 9-7 65% 3% 30% 2% 25% Comparative Example 9-1 95% 3% 0% 0% 3% Comparative Example 9-2 95% 3% 0% 0.05% 20% Comparative Example 9-3 85 % 3% 0% 1 2% 15% Comparative Example 9-4 95% 3% 0% 2% 85% Comparative Example 9-5 80% 0% 10% Gypsum 10%

In Comparative Example 9-4, a press method was used.

The composite cured products obtained in Example 9 and Comparative Example 9 were tested for flexural strength, compressive strength, workability and nailability, fracture toughness, and abrasion resistance. The results are shown in Table 2. The molded body was examined to determine whether it would break when the paper body before drying was cut into lm squares and lifted.

[Table 17]

Bending strength Compressive strength Workability Nail crush Fracture toughness Lightness Break K g / s mkgcm 丄 vi a * m 1/2

π U ooocnu ΈΤ ΈΤ Q q Husband / JtEl ck ck ο 7 Husband Zit I ώ

1

Q

Husband 1 tally y ^ ± U c3 O O no ο Q

丄 PJ ο 1

1

夭 ϊΰΙΊ Guri τ: QO Π VJ «oo Q n U π U / 丄^W J / 1 し丄 ο · ο

q

Husband ¾1ΊGuri 0 O 丄 U oo π U ΠU / ■ fJinU 丄 ~ r " ^H JT ck 丄 ο.

U o O U fin cho ΈΤ ο

.

Husband / Guri, »D 丄 o Q π VJ Π U" fincho "5T z Ο K · KJ

Π

1 t 丄 O Π U o o υ "n U ~ T oT

丄ⁿ J. U ί right Comparative example 9-2 3 30 8 50 Machinable None 3.00 Yes Comparative example 9-3 2 70 7 50 Machinable None 2.8 4 Yes Comparative example 9-4 3 1 0 8 50 Processing possible None 3.04

Comparative example 9-5 2 70 7 50 Processing possible No 2.8 4 Yes Comparative example 9-6 2 70 7 50 Processing impossible Yes 2.8 5 Yes

(10) Example 10 in which pressing was performed in a mold and Comparative Example 0 in which no mold was used will be described. The manufacturing conditions of Example 10 and Comparative Example 10 are as follows. [Table 18]

Papermaking Sludge Coagulant Cement Vinylon Fiber Solids Example 10-1 9 5% 3% 0% 2% 5% Example 10-2 90% 2% 5% 3% 1 0% Example 10-3 98% 0.1% 0% 1.9% 20% Example 10-4 80% 0.02% 15% 4.98% 30% Example 10-5 70% 3% 25% 2% 50% Example 10-6 90% 2% 0% 8% 60% Example 10-7 6 5% 5% 28% 2% 80% Comparative example 10-1 9 5% 0% 0% 5% 3% Comparative example 10-2 90% 0% 0% 5% 3% Compare In Example 10-1, after papermaking, a press without a formwork was used. The composite cured products obtained in Example 10 and Comparative Example 10 were tested for bending strength, compressive strength, workability, nailing properties, fracture toughness, and abrasion resistance. The results are shown in Table 2.

[Table 19]

kg / cm ² kg no no no no no no yes X cm 2 MPa • m ^1/2

Example 10-1 3 30 8 50 Processing possible None 3.3 7

Example 10-2 3 3 5 86 0 Processing possible None 3.3 7

Example 10-3 340 8 6 5 Processing possible None 3.3 7

Example 10-4 308 8 00 Processing possible None 3.15.5 Example 10-5 3 1 0 800 Processing possible None 3.15.5 Example 10-6 3 30 8 50 Processing possible None 3.3 7

Example 10-7 3 1 0 800 Machinable None 3.3 3.5 Comparative Example 10-1 3 30 8 50 Machinable None 3.07

Comparative Example 10- 2 3 30 8 50 Machinable None 3.07 Whether or not torn Example 10-1

Example 10-2

Example 10-3

Example 10-4

Example 10-5

Example 10-6

Example 10-7

Comparative Example 10-1

Comparative Example 10-2 Subsequently, a method for producing a cured product and a device for producing a cured product according to the second embodiment of the present invention will be described with reference to FIG. The second embodiment is almost the same as the first embodiment except for the method of cutting the paper and the laminating direction. Therefore, description is omitted except for the cutting direction and the laminating direction. In the first example described above, the papermaking body 26 was cut into lm X 2 m. On the other hand, in the second embodiment, the cutter 36 cuts the papermaking body 26 into lm X lm. Further, when the papermaking body 26 is placed on the reversing plate 46 of the reversing device 40 from the belt conveyor 38 by the transfer device 42, the papermaking body 26 is placed after being turned 90 degrees in the horizontal direction. That is, the transfer direction from the wire cylinders 22 A, 22 B, and 22 C to the transport belt 23 is shifted when the paper bodies are laminated. The strength difference occurs in the papermaking body 26 along the transfer direction to the conveyor belt 23. Specifically, assuming that the strength when bending is performed along the transfer direction is 1, the strength in the direction perpendicular to the transfer direction is about 0.8. In the second embodiment, when the papermaking bodies 26 are laminated, the cured bodies having uniform strength are produced by laminating the paper bodies 26 so that the transfer direction to the conveyor belt 23 is shifted. As one application example of the composite cured body 1, a composite building material will be described below. That is, as shown in FIG. 19, in a composite building material in which a reinforcing layer 6 is formed on at least one surface of the core material 5 and on both surfaces in the illustrated example, the composite material manufactured by the method of the present invention is applied to the core material 5. Apply cured product 1. That is, by forming the core material 5 into the composite cured body 1 manufactured by the method of the present invention, even when a tensile force is applied to the core material, the core material itself has excellent bending strength, and In addition to the fact that a reinforcing layer is provided on the surface, the structure is not easily broken. Also, even if pressure is locally applied to the surface, no dent or depression occurs.

Further, in the use of this composite building material, a decorative layer such as a paint, a decorative board and a decorative veneer is provided on the reinforcing layer 6, so that the impact resistance is improved, and a dent or the like is formed. Scratches are less likely to occur, and the decorative surface is not distorted by the scratches and the design is not degraded.

The reinforcing layer 6 has a structure in which the fiber base material 6b is embedded in the resin 6a. It is particularly preferable to use a thermosetting resin for the essence 6a. That is, unlike a thermoplastic resin, a thermosetting resin has excellent fire resistance and does not soften even at a high temperature, and thus does not lose its function as a reinforcing layer. As the thermosetting resin, phenol resin, memelamine resin, epoxy resin, polyimide resin, urea resin and the like are suitable. And give the reinforcing layer sufficient rigidity and impact resistance, and even higher fire resistance To achieve this, it is desirable that the content of the thermosetting resin in the reinforcing layer be in the range of 10% by weight to 65% by weight.

On the other hand, it is desirable to use inorganic fibers for the fiber base material 6b. This is because the strength of the reinforcing layer 6 can be improved and the coefficient of thermal expansion can be reduced. Use at least one of inorganic fibers such as glass fiber, rock wool, ceramic fiber, glass fiber chopped strand mat, glass fiber roving cloth, glass fiber continuous strand mat, and glass fiber paper.Low cost and heat resistance It is preferable in terms of excellent properties and strength. This fiber base material is a non-continuous fiber formed into a mat shape, or a continuous long fiber cut into 3 to 7 cm into a mat (so-called chopped strand mat), dispersed in water. It is possible to apply a sheet which is made into a sheet, a continuous long fiber is spirally laminated to form a mat, or a continuous long fiber is woven.

Further, the thickness of the reinforcing layer is desirably 0.1 mm to 3.5 mm. When the content is set in this range, sufficient rigidity and impact resistance can be obtained, and high workability can be maintained. The reinforcing layer may be supplemented with a flame retardant such as aluminum hydroxide and magnesium hydroxide, and a commonly used inorganic binder such as silica sol, alumina sol, and water glass. Here, the reinforcing layer is provided, but the surface may be coated with a resin or the like so that the cured body does not absorb moisture.

Claims

The scope of the claims

'' 1. Paper sludge is made and hardened.

A cured product containing an organic fibrous material composed of a polysaccharide and carbonic acid calcium in an inorganic amorphous material composed of an oxide of each of Si, A and Ca; C a, a 1, the amount of S i are respectively _{C a 0, a 1 2 0} 3, S i O 2 in terms of C a oZS i O ₂ ratio 0.2 from 7. 9, C a Ο , Α 1 ₂ O ₃ ratio was adjusted from 0.2 to 12.5,

A hardened papermaking sludge characterized in that the brightness of the hardened body is N5 or more as a value based on JIS Z8721.

2. Papermaking sludge is made and hardened.

A cured product comprising an inorganic amorphous material composed of oxides of Si, Al, and Ca, and an organic fibrous material composed of a polysaccharide and calcium carbonate. C a, the amount of a and S i is 7. respectively from _{C a 0, a 1 2 0} 3, S I_〇 ₂ C a oZS i 0 2 ratio 0.2 in terms of 9, C a OZA 1 A hardened papermaking sludge whose ₂ O ₃ ratio is adjusted from 0.2 to 12.5.

3. The hardened product of papermaking sludge according to claim 1, wherein the crystal habit of calcium carbonate is at least one or more selected from a spindle shape, a square shape, a thin table shape, a cubic shape, and a column shape.

4. The hardened papermaking sludge according to any one of claims 1 to 3, wherein the cement content of the papermaking sludge is 0 or 30% by weight or less.

5. Papermaking sludge is made and hardened.

A cured product containing an organic fibrous material composed of a polysaccharide and a carbonated calcium carbonate in an inorganic amorphous material composed of oxides of Si, A1, and Ca. C a, a 1, S amount of i, respectively C _{_{A_〇, a 1 2 0 3, S}} i 0 2 from C a ozs i 0 ₂ ratio 0.2 in terms of 7. 9, C a O / a 1 ₂ 0 ₃ ratio is adjusted to 12.5 from 0.2, flocculants, which are contained papermaking sludge cured product.

6. Papermaking sludge is made and hardened,

A cured product comprising an inorganic amorphous material composed of oxides of Si, A1, and Ca each containing an organic fibrous material composed of a polysaccharide and calcium carbonate, The amounts of C a, A 1, and S i in the cured product are respectively: from _{_{a 0, A 1 2 0 3}} , S i 0 2 C a O / S i O 2 ratio 0.5 from 2 7. 9, Ca O / A l 2 〇 ₃ ratio is 0.2 in terms of A cured papermaking sludge, adjusted to 12.5 and containing synthetic fibers.

7. A raw material solution containing papermaking sludge is formed using a filter body, a papermaking sludge paperwork is attached to the surface of the filter body, and the papermaking body is transferred to a conveyor belt and then transferred to a predetermined size. A method for producing a cured product, characterized by obtaining a cured product of papermaking sludge by curing the papermaking product.

8. Papermaking the raw material solution containing papermaking sludge using a rotating drum that rotates at a rate of 1 to 100 times / minute, attaching the papermaking sludge paperwork to the surface of the rotating drum, and applying this papermaking body to a conveyor belt. A method for producing a cured product, which comprises transferring after transferring, cutting into a predetermined size, and curing the paper product to obtain a cured product of papermaking sludge.

9. A raw material solution containing papermaking sludge is made using a filter having a mesh structure of # 40 to 150, and a papermaking sludge paperwork is attached to the surface of the filter, and the papermaking body is transferred to a conveyor belt. A method for producing a cured product, comprising transferring the product, cutting it into a predetermined size, and curing the paper product to obtain a cured product of papermaking sludge.

10. Solid content including papermaking sludge 3. Make a raw material solution of 5 to 25% by weight using a rotating drum made of a mesh, and attach papermaking sludge to the surface of the rotating drum made of the mesh. A method for producing a cured product, comprising transferring the paper product to a conveyor belt, transferring the paper product, cutting the paper product into a predetermined size, and curing the paper product to obtain a cured papermaking sludge.

1 1. A raw material solution containing papermaking sludge is formed using a filter body, a papermaking sludge paperwork is attached to the surface of the filter body, and the papermaking body is transferred to a conveyor belt at a speed of 5 to 8 OmZ. A method for producing a cured product, comprising transferring the product, cutting it into a predetermined size, and curing the papermaking product to obtain a cured product of papermaking sludge.

1 2. C a, A 1, S amount of i are respectively _{C a 0, A 1 2 0} 3, S i 0 2 to be conversion calculated C a O / S i 0 ₂ ratio 0.2 to 7 9. Revolving the raw material solution containing paper sludge with the ratio of Ca OZA 1 ₂ 〇 _{3 from} 0.2 to 12.5 consisting of a mesh A paper is formed using a drum, and a paper sludge paper is adhered to the surface of the rotary drum, and the paper is transferred to a transport belt of a porous body having continuous pores, and the paper is transported by the transport belt. A method for producing a cured product, comprising: dewatering a paper sludge; cutting into a predetermined size; and curing the paper product to obtain a cured product of papermaking sludge.

13. The raw material solution containing the papermaking sludge is paper-formed using a filter body, the papermaking sludge paperwork is adhered to the surface of the filter body, and the papermaking body is transferred to a conveyor belt and then transferred. Is transferred to a rotary drum for cutting to form a multilayer, and when the multilayered paper reaches a predetermined thickness, it is cut into a predetermined size, and the paper is cured to cure the papermaking sludge. A method for producing a cured product, characterized in that a cured product is obtained.

1 4. The papermaking product of the papermaking sludge obtained by papermaking using a drainage member a raw material solution containing papermaking sludge, characterized in that a plurality of laminated, under pressure press N 1 0 to 2 5 O Kg in m ² And a method for producing a cured body.

15. A method for producing a cured product in which papermaking sludge papermaking products obtained by papermaking a raw material solution containing papermaking sludge are laminated and cured,

A method for producing a cured product, comprising: laminating the paper bodies while alternately inverting the paper bodies.

16. The raw material solution containing the papermaking sludge is formed using a filter body, the papermaking sludge paperwork is attached to the surface of the filter body, and the papermaking body is transferred to a conveyor belt and then transferred. A method for producing a cured product, wherein a plurality of papermaking products obtained by cutting the papermaking sludge papermaking product into a predetermined size in a multilayer while transferring the papermaking sludge papermaking product to a rotary drum for cutting are cured. ,

17. The raw material solution containing the papermaking sludge is formed using a drainage body, the papermaking sludge paperwork is attached to the surface of the filtrated body, and the papermaking body is transferred to a conveyor belt and then transferred. A method for producing a cured product in which a plurality of papermaking products obtained by cutting the papermaking sludge papermaking product into a predetermined size while transferring the papermaking sludge papermaking product to a rotary drum for cutting are laminated and cured. , When laminating the paper bodies, the exposed surfaces of the uppermost and lowermost paper bodies are surfaces that have been in contact with the rotating drum, and the paper bodies are laminated while alternately inverting the lamination surface. Method for producing a cured body.

18. The raw material solution containing the papermaking sludge is paper-formed using a filter body, the papermaking sludge paperwork is attached to the surface of the filter body, and the papermaking body is transferred to a conveyor belt, and the paper-size is formed into a predetermined size. A method for producing a cured product in which a plurality of paper products obtained by cutting are laminated and cured.

A method for producing a cured body, comprising: laminating the papermaking articles so that the transfer direction to the conveyor belt is shifted.

19. A coagulant is added to a raw material solution containing papermaking sludge to cause agglomeration, and the agglomerated raw material solution is made into a paper using a filter, and the paper is hardened to obtain a hardened papermaking sludge. And a method for producing a cured body.

20. A coagulant is added to the raw material solution containing papermaking sludge to cause coagulation, and the coagulated raw material solution is formed using a filter body, and a papermaking sludge paperboard is attached to the surface of the filter body. A method for producing a cured product, comprising transferring a product to a conveyor belt, transferring the product, cutting the product into a predetermined size, and curing the paper product to obtain a cured product of papermaking sludge.

21. A binder is added to a raw material solution containing papermaking sludge, the raw material solution is made into a paper using a filter, and the paper is hardened to obtain a hardened papermaking sludge. Production method.

22. A binder is added to the raw material solution containing the papermaking sludge, the raw material solution is made into a paper using a filter, and the papermaking sludge paper is attached to the surface of the filter, and the paper is transferred to a conveyor belt. A method for producing a cured body, comprising transferring the paper to a predetermined size, cutting the paper into a predetermined size, and curing the paper to obtain a cured paper sludge.

23. Hardening characterized by producing a hardened papermaking sludge by pressing a papermaking sludge papermaking body obtained by papermaking a raw material solution containing papermaking sludge using a drainage body in a mold. How to make the body.

24. A plurality of papermaking sludge papermaking products obtained by papermaking a raw material solution containing papermaking sludge using a drainage body are laminated and pressurized to produce a hardened papermaking sludge. A method for producing a cured product, comprising:

25. The method for producing a cured product according to any one of claims 7 to 24, wherein the concentration of the raw material solution containing the papermaking sludge has a solid content of 3.5 to 25% by weight. .

26. The papermaking body is dewatered while being conveyed by the conveyance belt, wherein the paperboard is dehydrated from any one of Claims 7 to 11, Claims 13, and 19 to 22. A method for producing a cured product.

27. The paper material on the conveyor belt is multi-layered while being transferred to a rotary drum for cutting, and the multi-layered paper material is cut when reaching a predetermined thickness. A method for producing the cured product according to claim 1.

28. The multi-layer structure of the cut sheet is followed by pressing under pressure, wherein the pressure is pressurized. A method for producing a cured body.

2 9. Claim 2 3 wherein and performing pressure press at 1 0 ~ 2 5 O Kg N m ^2, claims 2 to 4, a manufacturing method of any one of the cured product of claim 2 8.

30. The method for producing a cured product according to claim 10, wherein the raw material solution does not contain any cement or contains 30% by weight or less of cement in a solid content.

31. The method for producing a cured product according to any one of claims 14 to 18, wherein the papermaking product is laminated with the raw material solution interposed therebetween.

32. The method for producing a cured product according to any one of claims 14 to 18, wherein the paper is formed to a thickness of 20 mm or less.

33. The coagulant is any one of aluminum sulfate, ferric chloride, polychlorinated aluminum, sodium polyacrylate, polymethacrylate, polyacrylate, and polyacrylamide. A method for producing a cured product according to claim 19 or 20.

34. The method for producing a cured product according to claim 21 or claim 22, wherein the binder is an organic fiber.

35. A filter body that forms a raw material solution containing papermaking sludge and attaches the papermaking sludge paperwork to the surface;

A transfer belt for transferring and transporting the papermaking body attached to the surface of the drainage body, A cutting device that cuts the paper body conveyed by the conveyor belt into a predetermined size, and a curing device that cures the cut paper body to obtain a cured body of papermaking sludge. Manufacturing equipment.

36Rotating drum for making a raw material solution containing papermaking sludge and attaching papermaking sludge to the surface at a rotation speed of 1 to 100 times;

A transfer belt that transfers and transports the paper body attached to the surface of the rotary drum, a cutting device that cuts the paper body that has been transported through the transport belt to a predetermined size, and cures the cut paper body. And a curing device for obtaining a cured product of the papermaking sludge.

37. A raw material solution containing papermaking sludge is made into paper, and a papermaking body of papermaking sludge is adhered to the surface.

A transport belt that transfers and transports the paper body attached to the surface of the drainage body, a cutting device that cuts the paper body transported by the transport belt to a predetermined size, and curing the cut paper body. And a curing device for obtaining a cured product of the papermaking sludge.

38. A rotating drum composed of a mesh formed by forming a raw material solution having a solid content of 3.5 to 25% by weight including papermaking sludge and attaching a papermaking sludge to the surface thereof; A conveyor belt for transferring and conveying the paper body attached to the surface;

A cutting device that cuts the paper body conveyed by the conveyor belt into a predetermined size, and a curing device that cures the cut paper body to obtain a cured body of papermaking sludge. Manufacturing equipment.

39. A filter body that forms a raw material solution containing papermaking sludge and attaches the papermaking sludge paperwork to the surface.

A transfer belt of a speed of 5 to 8 O mZ for transferring and transporting the paper body attached to the surface of the drainage body,

A cutting device that cuts the paper product conveyed through the conveyor belt into a predetermined size, and a curing device that cures the cut paper material to obtain a cured product of papermaking sludge. Manufacturing equipment.

40. Papermaking raw material solution containing papermaking sludge, and papermaking sludge papermaking on the surface A rotating drum made of a mesh to adhere

A transfer belt of a porous body, which transfers the paper body attached to the surface of the rotating drum, and dehydrates while transferring the paper body;

4 1. A raw material solution containing papermaking sludge is made into paper, and a filter body is attached to the surface of the papermaking sludge to form a papermaking sludge.

A conveyor belt that transfers and transports the paper body attached to the surface of the drainage body, and a cutting rotary drum that multilayers while transferring the paper body on the conveyor belt, and a groove for retaining water on the surface; An extruding mechanism for extruding the paper body from the inside thereof, wherein the extrusion mechanism is actuated when the multi-layered paper body reaches a predetermined thickness. A rotary drum for cutting for cutting the paper body at a position corresponding to the groove;

A hardening device for hardening the cut sheet to obtain a hardened body of papermaking sludge.

42. A raw material solution containing papermaking sludge is made into paper, and a filter body is attached to the surface of the papermaking sludge to form a papermaking sludge.

A transport belt that transfers and transports the papermaking body attached to the surface of the drainage body, a cutting device that cuts the paperboard transported through the transport belt to a predetermined size, and a papermaking body of the cut paper sludge. And a laminating device for laminating a plurality of layers with the raw material solution interposed therebetween.

4 3. A drainage body that forms a raw material solution containing papermaking sludge and attaches the papermaking sludge paperwork to the surface,

A transport belt that transfers and transports the papermaking body attached to the surface of the drainage body; a cutting device that cuts the paperboard transported through the transport belt into a predetermined size; and a papermaking body of the cut papermaking sludge. And a laminating device for alternately inverting and laminating the layers.

4 4. A papermaking device that forms a raw material solution containing papermaking sludge and produces a papermaking sludge papermaking body. A pressurizing device that presses the papermaking sludge papermaking body into a mold and pressurizes the papermaking sludge, and a pressurizing device having a through hole for removing moisture oozing from the papermaking sludge. Body manufacturing equipment.

45. A drainage body that forms a raw material solution containing papermaking sludge and attaches the papermaking sludge paperwork to the surface,

A transport belt that transfers and transports the papermaking body attached to the surface of the drainage body; a cutting device that cuts the paperboard transported through the transport belt into a predetermined size; and a papermaking body of the cut papermaking sludge. A pressurizing device for placing the pressurized product in a mold and pressurizing the pressurized product, the pressurizing device having a through hole for removing moisture oozing from the papermaking body.

46. A filter body that forms a raw material solution containing papermaking sludge and attaches the papermaking sludge paperwork to the surface.

A transport belt that transfers and transports the papermaking body attached to the surface of the drainage body; a cutting device that cuts the paperboard transported through the transport belt into a predetermined size; and a papermaking body of the cut papermaking sludge. A laminating apparatus for laminating with the raw material solution interposed,

A pressurizing device for placing the laminated paper body in a mold and pressurizing the press, and comprising: a pressurizing device having a through hole for removing moisture oozing from the paper body; Body manufacturing equipment.

47. The method for producing a cured product according to any one of claims 35 to 37 and claim 39 to claim 42, wherein the drainage body is a rotating drum made of a mesh.

48. The apparatus for manufacturing a cured body according to any one of claims 35 and 37 to 43, wherein the rotation speed of the rotary drum is 1 to 100 times / minute. .

49. The paper filter according to any one of claims 35 to 42, wherein a plurality of the drainage bodies are juxtaposed along a conveyor belt, and the papermaking body is transferred while being multi-layered on the conveyor belt. Equipment for manufacturing cured products.

50. The hardening body according to any one of claims 35, 36, and 38 to 42, wherein the filter body has a mesh structure of # 40 to 150. Body made

51. The apparatus for producing a cured body according to any one of claims 35 to 38 and 41, wherein the conveying speed of the conveying belt is 5 to 80 minutes. 52. The apparatus according to any one of claims 35 to 39 and 41, wherein the transport belt is formed of a porous body having continuous pores. .

5 3. The cutting device is composed of a cutting rotary drum for forming a multilayer while transferring the paper,

The cutting rotary drum includes a groove for retaining water on the surface, and an extrusion mechanism located near the groove and for extruding the papermaking body from the inside,

When the multilayered paper body on the surface of the cutting rotary drum reaches a predetermined thickness, the extruding mechanism is operated, and the paper body is cut at a position corresponding to the groove. An apparatus for producing a cured product according to any one of claims 35 to 40. 54. The apparatus for producing a cured body according to claim 53, wherein the cutting device further includes a blade that cuts the paper body having one end cut by the rotary drum for cutting at a predetermined interval.

55. The apparatus for producing a cured body according to claim 41, further comprising a blade for cutting the papermaking body having one end cut by the cutting rotary drum at a constant interval.

56. The apparatus for producing a cured body according to claim 43, wherein the laminating apparatus laminates a plurality of the papermaking sludge papermaking articles with the raw material solution interposed therebetween.