JP2015120631A - Molding material, method for producing molding material, molding, and method for manufacturing molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide: a molding material capable of forming a molding only using a paper making sludge incinerated ash; a method for producing the molding material; a molding using a paper making sludge incinerated ash, excellent in a moldability and high in strength; and a method for manufacturing the molding.SOLUTION: A molding material consists of a paper making sludge incinerated ash obtained by incinerating the residue in a paper pulp producing process. The paper making sludge incinerated ash is controlled so that fine particles having a particle size of 20 μm or less is included at a proportion of 15 volume% or more. Since the fine particles having a suitable size is controlled so as to have a suitable percentage content, the fine particles are solidified only by adding water. Therefore, the molding can be formed when the fine particles are used instead of binders, such as cement and gypsum.

Description

  The present invention relates to a molding material and a method for producing the molding material. More specifically, the present invention relates to a molding material using paper sludge incineration ash as a raw material and a method for manufacturing the molding material.

  Papermaking sludge incineration ash is generally incinerated papermaking sludge, which is the solid content that is produced when the solids (including organic substances and inorganic substances) in the wastewater of each process of the paper mill are processed in the wastewater treatment process. It is the ash that is generated. Since this papermaking sludge incineration ash is generated in large quantities in the papermaking process, its treatment is an important problem.

Conventionally, most of papermaking sludge incineration ash is generally landfilled as industrial waste, but part of it is used as a material for concrete. This is because the papermaking sludge incineration ash is difficult to use effectively as it is.
In recent years, as a method for utilizing papermaking sludge incineration ash, technologies for forming a molded body from papermaking sludge incineration ash and producing raw materials for the molded body have been researched and developed (for example, Patent Documents 1 to 5).

Patent Document 1 discloses a method of mixing a papermaking sludge incinerated ash, a hydraulic material such as cement, and water to form a solidified body. Nearly half of the papermaking sludge incinerated ash used has a particle diameter of 20 μm or less. It is described that it is occupied by particles.
Patent Document 2 discloses a method of forming concrete granular products by mixing paper sludge incineration ash (PS incineration ash), quicklime and cement. And, Patent Document 2, after curing the granule, by performing hydrothermal solidification reaction with steam curing, lime are originally contained in the PS ash (CaO) and silica (SiO ₂₎ and adding quicklime From (CaO) and silica (SiO ₂ ) contained in the cement, crystals of calcium silicate (tobermorite, 5CaO · 6SiO ₂ · 5H ₂ O) are produced by a hydrothermal solidification reaction. It describes that a stable granular hydrothermal solidified product (granular product) can be obtained.

  In Patent Documents 3 and 4, there is a technique for forming a solidified body that does not require a binder using mixed ash prepared by mixing paper sludge incineration ash and coal ash so that a predetermined chemical composition has a predetermined content. The technique which utilizes as a roadbed material by forming the shape | molded solidified body in the predetermined magnitude | size is disclosed. For example, it is disclosed that mixing is performed such that coal ash becomes 100 kg with respect to 200 kg of paper sludge incineration ash.

On the other hand, Patent Document 5 discloses a technique in which a papermaking body is made from a solution in which papermaking sludge is made into a slurry using a papermaking apparatus, and a composite cured body is formed from the papermaking body. And the technique which shape | molds a composite hardening body after mixing an inorganic particle in order to perform a spin-drying | dehydration process easily, and the organic fibrous material in order to improve an intensity | strength to the slurry form is disclosed. Then, in the technique of Patent Document 3, calcined powder of paper sludge as an example of the inorganic particles (hereinafter simply paper referred Sludge Ash) discloses a, Al ₂ O ₃ is an inorganic amorphous material in the papermaking sludge, It is also disclosed that a predetermined oxide such as SiO ₂ or CaO is used as a material that exhibits the strength of the composite cured body. In addition, pulp in papermaking sludge is also disclosed as an example of organic fibrous material. And it is also disclosed that papermaking sludge incinerated ash having an average particle diameter adjusted to 10 μm to 100 μm is mixed as a water draining material when molding the composite cured body.

Japanese Patent Laid-Open No. 57-11867 JP 2007-15893 A JP 2006-122726 A JP 2011-212563 A JP 2002-371498 A

  However, although Patent Documents 1 to 5 described above are techniques that use papermaking sludge incineration ash, papermaking sludge incineration ash is only realized as an auxiliary material. Specifically, the techniques of Patent Documents 1 to 5 are techniques for forming a normal solidified body by paper sludge incineration ash and other materials (cement, lime, coal ash, gypsum, etc.), and have a predetermined chemical composition to the last. It is just a technique that uses papermaking sludge incineration ash as one material for adjustment. This is because, in Patent Document 2, a granular product cannot obtain sufficient strength by a hydrothermal solidification reaction of only lime and silica originally contained in PS incinerated ash, so that an added mixture of quick lime and cement is added. It can also be inferred from the fact that is necessary.

  Further, although the technique of Patent Document 5 discloses that an inorganic non-crystalline material in paper sludge is used as a material exhibiting strength, paper sludge incineration ash is merely a dehydration auxiliary material when molding a composite hardened body. As a technology to mix papermaking sludge incineration ash.

  Here, conventionally, it was thought that even if water was added to PS ash, the PS ash alone would not solidify. For this reason, in the prior art using PS ash, the actual situation is that PS ash was only realized as an auxiliary material for a binder such as cement.

  If a molded body can be formed only from paper sludge incineration ash, it is desirable because paper sludge incineration ash can be used effectively.

  In view of the above circumstances, the present invention is a molding material that can form a molded body using papermaking sludge incineration ash, a method for producing the molding material, and a molded body that has excellent formability and high strength using papermaking sludge incineration ash. And it aims at providing the manufacturing method of a molded object.

(Molding material)
The molding material of the first invention is a molding material made of paper sludge incineration ash obtained by incineration of a paper pulp manufacturing process residue, and the paper sludge incineration ash contains 15% by volume of fine particles having a particle size of 20 μm or less. It is adjusted so that it may contain in the above ratio.
The molding material of the second invention is characterized in that, in the first invention, the papermaking sludge incineration ash is adjusted so as to contain coarse particles having a particle diameter larger than that of the fine particles.
The molding material of the third invention is characterized in that, in the second invention, the fine particles include those prepared by pulverizing the coarse particles.
The molding material according to a fourth invention is the molding material according to the second invention, wherein the fine particles are bag filter ash, the coarse particles are cyclone ash, and the bag filter ash and the cyclone ash have a mass ratio of 10: 0. It is adjusted so that it may be set to ˜2: 8.
(Manufacturing method of molding material)
In the method for producing a molding material according to the fifth aspect of the invention, the papermaking sludge incineration ash obtained by incinerating the paper pulp production process residue is adjusted so that the proportion of fine particles having a particle diameter of 20 μm or less is 15% by volume or more. It is characterized by.
The method for producing a molding material according to a sixth invention is characterized in that, in the fifth invention, the papermaking sludge incineration ash is adjusted so as to contain coarse particles having a particle diameter larger than that of the fine particles.
According to a seventh aspect of the present invention, there is provided the method for producing a molding material according to the sixth aspect, wherein the fine particles include those prepared by pulverizing the coarse particles.
According to a method for producing a molding material of an eighth invention, in the sixth invention, bag filter ash is used as the fine particles and cyclone ash is used as the coarse particles, and the bag filter ash and the cyclone ash are 10 in mass ratio. : 0 to 2: 8.
(Molded body)
The molded body of the ninth invention comprises a molding material made of paper sludge incineration ash obtained by incinerating a paper pulp manufacturing process residue and a fiber member, and the fiber members are connected by the molding material. It is characterized by being.
According to a tenth aspect of the present invention, in the ninth aspect, the molding material is prepared so that the molding material contains fine particles having a particle diameter of 20 μm or less at a ratio of 15% by volume or more.
According to an eleventh aspect of the present invention, in the ninth or tenth aspect of the invention, the molding material and the fiber member are mixed, and the mixed material is kneaded and molded.
The molded body of the twelfth invention is characterized in that, in the eleventh invention, the kneaded mixed material is kneaded and pressure-molded.
According to a thirteenth aspect of the present invention, in the tenth, eleventh or twelfth aspect, the papermaking sludge incineration ash is adjusted so as to contain coarse particles having a particle diameter larger than that of the fine particles. And
According to a fourteenth aspect of the present invention, in the thirteenth aspect, the fine particles include those prepared by pulverizing the coarse particles.
According to a fifteenth aspect of the present invention, in the thirteenth aspect, the fine particles are bag filter ash, the coarse particles are cyclone ash, and the bag filter ash and the cyclone ash have a mass ratio of 10: 0. It is adjusted so that it may be set to ˜2: 8.
According to a sixteenth aspect of the present invention, in the ninth, tenth, eleventh, twelfth, thirteenth, fourteenth or fifteenth invention, the fiber member has an average fiber width of 1 to 35 μm and an average fiber length of 0.1 to 0.1. It contains 3 mm fiber.
According to a seventeenth aspect of the present invention, in the ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, or sixteenth aspects, the fiber member is pulp.
(Method for producing molded body)
The method for producing a molded body according to an eighteenth aspect of the invention comprises mixing a molding material made of paper sludge incineration ash obtained by incineration of a paper pulp manufacturing process residue and a fiber member, and kneading and molding the mixed mixed material. It is characterized by doing.
According to a nineteenth aspect of the present invention, in the eighteenth aspect of the invention, the kneaded mixed material is kneaded and pressure-molded.
The method for producing a molded body according to a twentieth aspect of the invention is the paper sludge incineration ash according to the eighteenth or nineteenth aspect, wherein the molding material is adjusted so as to contain fine particles having a particle diameter of 20 μm or less at a ratio of 15% by volume or more. It is characterized by being.
In the eighteenth, nineteenth or twentieth invention, the method for producing a molded article of the twenty-first invention is adjusted so that the fiber member contains fibers having an average fiber width of 1 to 35 μm and an average fiber length of 0.1 to 3 mm. It is characterized by being made.
The method for producing a molded body according to a twenty-second aspect of the invention is characterized in that, in the twentieth or twenty-first aspect, the papermaking sludge incineration ash is adjusted to contain coarse particles having a particle diameter larger than the fine particles. .
According to a 23rd aspect of the present invention, there is provided a method for producing a molded body according to the 22nd aspect, wherein bag fine ash is used as the fine particles and cyclone ash is used as the coarse particles, and the bag filter ash and the cyclone ash are 10 in mass ratio. : 0 to 2: 8.

(Molding material)
According to the first aspect of the invention, the fine particles having an appropriate size are adjusted so as to have an appropriate content rate, so that they can be solidified only by adding water. Then, if it uses it instead of binders, such as cement and gypsum, a molded object can be formed.
According to the second aspect of the invention, since the coarse particles having a predetermined particle diameter are contained, if they are kneaded and solidified, they are solidified with the fine particles dispersed between the coarse particles. Then, the molded object which has desired intensity | strength can be shape | molded.
According to the third invention, since the molding material can be formed using a material having a large particle size, for example, various PS ash such as cyclone ash can be used as a raw material.
According to the fourth aspect of the invention, the molding material can be molded simply by mixing the bag filter ash and the cyclone ash as they are at a predetermined ratio, so that the adjustment of the molding material can be simplified. And if the ratio which mixes bag filter ash and cyclone ash is adjusted, the molding material which generate | occur | produces the intensity | strength according to a use when it solidifies can be formed.
(Manufacturing method of molding material)
According to the fifth aspect of the present invention, it is possible to produce a molding material that is solidified when water is added by simply adjusting so that fine particles having an appropriate size have an appropriate content rate.
According to the sixth aspect of the invention, since the molding material is adjusted so as to contain coarse particles having a predetermined particle diameter, a molding material that solidifies in a state in which fine particles are dispersed between the coarse particles is manufactured if kneaded and solidified. be able to. If the mixing ratio is adjusted, it can be solidified, and thus a molding material that generates a desired strength can be produced.
According to the seventh aspect, since the molding material can be formed using a material having a large particle diameter, for example, various PS ash such as cyclone ash can be used as a raw material.
According to the eighth invention, since the molding material can be produced simply by mixing the bag filter ash and the cyclone ash at a predetermined ratio, the adjustment of the molding material can be simplified. And if the ratio which mixes bag filter ash and cyclone ash is adjusted, the molding material which generate | occur | produces the intensity | strength according to a use will be manufactured when it solidifies.
(Molded body)
According to the ninth aspect, since the fiber members are connected to each other by the molding material, it is possible to generate excellent characteristics in strength and the like.
According to the tenth aspect of the invention, the molding material is adjusted so that fine particles having an appropriate size have an appropriate content, so that it can be appropriately solidified.
According to the eleventh invention, the fine particles and the fiber member are mixed in the kneaded mixed material by kneading the mixed material having the molding material and the fiber member adjusted so that the fine particles having an appropriate size have an appropriate content ratio. Can be solidified more appropriately.
According to the twelfth aspect, since the fiber members are mixed, dehydration can be easily performed during pressure molding. Then, the density and intensity | strength of a molded object can be improved.
According to the thirteenth invention, since the coarse particles having a predetermined particle diameter are contained, the particles are solidified with the fine particles dispersed between the coarse particles. Then, the molded object which has desired intensity | strength can be shape | molded.
According to the fourteenth aspect, since the molding material can be formed using a material having a large particle diameter, various PS ash such as cyclone ash can be used as a raw material.
According to the fifteenth aspect, the molded body can be easily formed by mixing the bag filter ash and the cyclone ash as they are in a predetermined ratio and solidifying them. And if the ratio which mixes bag filter ash and cyclone ash is adjusted, the molded object which generate | occur | produces the intensity | strength according to a use when it solidifies can be formed.
According to the sixteenth aspect of the invention, since a fiber having an appropriate fiber length and fiber width is contained, a molded body having an appropriate strength can be formed. Moreover, even if the pressing pressure at the time of molding is increased, the dehydration process can be performed more smoothly.
According to the seventeenth invention, pulp such as waste paper pulp and virgin pulp obtained in the papermaking process can be effectively used.
(Method for producing molded body)
According to the eighteenth aspect of the present invention, if water is added to the molding material and the fiber member and kneaded, the fiber members are connected to each other by the molding material, so that it is possible to manufacture a molded body that generates excellent properties in strength and the like. .
According to the nineteenth aspect of the invention, since the press pressure during molding can be increased, a molded body having a high density can be produced. Then, the molded object which generate | occur | produces high intensity | strength can be manufactured.
According to the twentieth aspect of the invention, since the molding material is adjusted so that the appropriately sized fine particles have an appropriate content, a molded body that is appropriately solidified can be produced.
According to the twenty-first aspect, since the fiber member is adjusted so as to contain fibers having an appropriate fiber length and fiber width, a molded body that generates an appropriate strength can be manufactured. Moreover, even if the press pressure at the time of molding is increased, the dehydration process can be performed more smoothly, so that the workability at the time of manufacturing the molded body can be improved.
According to the twenty-second aspect, since the coarse particles having a predetermined particle diameter are contained, the fine particles can be dispersed between the coarse particles, so that a molded body that generates a desired strength can be produced.
According to the twenty-third aspect, the molded body can be easily produced by mixing the bag filter ash and the cyclone ash at a predetermined ratio and solidifying them as they are. And if the ratio which mixes bag filter ash and cyclone ash is adjusted, the molded object which generate | occur | produces the intensity | strength according to a use when it solidifies can be manufactured.

It is the figure which showed the particle size distribution of the papermaking sludge incineration ash used for the Example. It is the figure which showed the cumulative particle size distribution of the papermaking sludge incineration ash used for the Example. It is the figure which showed the experimental result of the Example, and is the figure which showed the XRD spectrum of the molding material and general cement. It is the figure which showed the flow at the time of manufacturing the molded object of this embodiment. It is the figure which showed the experimental result of the Example. It is the figure which showed the experimental result of the Example, and is the figure which showed the relationship between the particle size distribution of a molding material, and the bending strength and compressive strength of a molded object using this molding material. It is the figure which showed the experimental result of the Example.

  The molding material of the present invention is a material made of paper sludge incineration ash obtained by incineration of paper pulp manufacturing process residues, and adjusted so that the fine ash contained in the paper sludge incineration ash has a predetermined content rate. It is characterized by being adjusted so that it is solidified only by adding water and kneading. That is, since the molding material of the present invention itself functions as a solidifying agent, it can be used as a solidifying agent instead of a binder such as cement or gypsum.

  The papermaking sludge incineration ash (hereinafter simply referred to as PS ash) that is the raw material of the molding material of the present invention is a solid content (hereinafter simply referred to as papermaking sludge) containing papermaking sludge that is generated when wastewater in the papermaking process is processed. It is incineration ash collected when incineration is performed using an incineration facility (for example, about 800 ° C. to 900 ° C.).

Incineration equipment that incinerates paper sludge is generally composed of incinerators (for example, fluidized bed incinerators, stalker furnaces, rotary kilns) and granular materials (so-called incineration ash) contained in the gas processed by the incinerators And an incinerated ash collection device for collecting the ash. This incineration ash collection device generally collects incineration ash with a large particle diameter by a cyclone arranged upstream (incineration device side), and the cyclone contained in the gas that has passed through this cyclone can recover it completely. The fine particles that have not been collected are collected by a bag filter disposed downstream of the cyclone. In general, PS ash is incinerated ash with a large particle size recovered by a cyclone (hereinafter simply referred to as cyclone ash) and incinerated ash with a small particle size recovered by a bag filter (hereinafter simply referred to as bag filter ash). are categorized.
The size of cyclone ash and bag filter ash (that is, the particle size) means the diameter of a sphere that shows the same measurement results when measuring particles of specific cyclone ash or bag filter ash. To do.

  Cyclone ash is usually made of ash in a granular form (hereinafter referred to as coarse particles) with a particle size of 1000 μm or less, and bag filter ash is usually ash in the form of small particles (hereinafter referred to as fine particles) with a particle size of 20 μm or less. Consists of.

On the other hand, although both have different particle diameters, both are obtained by incineration of papermaking sludge as a raw material, and therefore contain substantially equivalent elements.
Usually, the papermaking sludge which is the raw material of both contains an inorganic substance derived from pulp and an inorganic substance derived from filler. Examples of inorganic substances such as fillers include kaolin (soil), calcined kaolin, calcium carbonate, zinc oxide, aluminum hydroxide, zinc sulfide, titanium dioxide, calcium sulfate, calcium sulfite, barium sulfate, talc, and silica. Can give.

  Therefore, the cyclone ash and the bag filter ash collected by the incineration ash collection device of the incineration facility when the papermaking sludge is incinerated contain components derived from these inorganic substances. Examples of such elements include calcium (Ca), aluminum (Al), and silicon (Si). These elements are considered to exist in cyclone ash and bag filter ash in a state such as calcium oxide or kaolin.

The molding material of the present invention is adjusted by mixing bag filter ash composed of fine particles having a particle size as described above or cyclone ash composed of such bag filter ash and coarse particles having a particle size as described above. Yes.
That is, the molding material of the present invention is adjusted to contain fine particles of 20 μm or less in PS ash, and contains the elements as described above.
Therefore, since the molding material of the present invention can be solidified by adding water and kneading, it can be used in place of cement or gypsum. That is, if the molding material of this invention is used, the molded object which the molding material solidified can be formed.

  The molding material of the present invention has properties different from alite and belite, which are the main components of cement. In other words, they have the best of both worlds. That is, when the molding material of the present invention is solidified by adding water, it has the property of maintaining the strength over a long period of time like belite while exerting the initial strength in the hydration reaction like alite. It is.

  In the molding material of the present invention, the crystal structure that exhibits such properties is different from the crystal structure that is generated when the cement is solidified. Details of the crystal structure will be described later.

  In particular, when PS ash mixed with bag filter ash and cyclone ash is used as the molding material of the present invention, it is preferable that the particle size is adjusted so as to contain fine particles having a particle size of 20 μm or less of 15% by volume or more. . In such a case, the molding material is adjusted so that fine particles having an appropriate size have an appropriate content, so that it can be surely solidified only by adding water.

Further, when PS ash mixed with cyclone ash and bag filter ash is used as the molding material of the present invention, the particle size of the fine particles constituting the bag filter ash is smaller than the particle size of the coarse particles constituting the cyclone ash, The fine particles of the bag filter ash are dispersed between the coarse particles of the cyclone ash.
Then, when a molded body is molded using a molding material using such PS ash, the coarse particles of cyclone ash are bonded with the fine particles of the bag filter ash existing between them in any part of the molded body. It can be in the state. That is, even when such a molding material is used, a homogeneous molded body can be formed.

Moreover, by adjusting the mixing ratio of the cyclone ash having coarse particles as described above and the bag filter ash having fine particles, the strength of the molded body formed using such a molding material can be adjusted, so It becomes possible to mold a molded body according to the application.
Details of the molded body will be described later.

  If the bag filter ash and cyclone ash recovered from the incineration facility have fine particles and coarse particles as described above, the molding material of the present invention can be manufactured by mixing both in a predetermined ratio. be able to.

  For example, when the bag filter ash recovered from the incineration facility is composed of the fine particles as described above and the cyclone ash is composed of the coarse particles as described above, the bag filter ash and the cyclone ash are 10: 0 to 2: It is preferable to mix so that it may be set to 8, More preferably, it mixes so that it may become 9: 1 to 4: 6.

Then, if this molding material is used, it has the same strength as a molded body molded using a molding material adjusted so that the fine particles as described above have an appropriate content (that is, 15% by volume or more). A molded body can be molded. That is, the molding material can be easily adjusted by simply mixing the bag filter ash and the cyclone ash collected from the incineration facility so as to have a predetermined ratio.
And the molded object which has the intensity | strength according to a use can be formed by adjusting the ratio which mixes this bag filter ash and cyclone ash.

In particular, if the bag ash and the cyclone ash can be recovered from the incineration facility in a state where they are mixed in a predetermined ratio (for example, 4: 6), the molding material of the present invention can be used as it is. Can be used as
In this case, the work of mixing the bag filter ash and the cyclone ash does not have to be performed, so that the workability when producing the molding material can be improved.

  In addition, if the bag filter ash and cyclone ash recovered from the incineration facility are recovered in a mixed state so as to be in the above range, a large amount of molding material can be adjusted according to the application, and incineration Since it becomes possible to carry out directly from an installation, economical efficiency can also be improved.

  In the above example, PS ash that is a raw material of the molding material of the present invention is composed of bag filter ash and cyclone ash, and the respective granular materials are fine particles and coarse particles. And as a coarse particle, the case where the general cyclone ash with a particle diameter of 1000 micrometers or less was used was demonstrated. However, the coarse particles may be cyclone ash having a particle size larger than the value, or PS ash having a particle size larger than the cyclone ash.

  As the PS ash having a particle size larger than that of a general cyclone ash, for example, an incineration ash recovery device is disposed on the upstream side (incineration device side) of the cyclone, and a granular material having a particle size larger than the cyclone ash (for example, In the case where an ash recovery part capable of recovering PS ash having a particle diameter of about 1 to about 3 mm is provided, PS ash recovered by the ash recovery part can be mentioned. If such PS ash is pulverized so as to have a particle size equivalent to that of the bag filter ash using a pulverizing means, a molding material can be produced in the same manner as when the cyclone ash is pulverized as described above. That is, even if PS ash contains PS ash having a particle diameter larger than that of cyclone ash, it can be effectively used as a raw material for the molding material of the present invention.

  As described above, the PS ash pulverized so that the particle size of the coarse particles is 20 μm or less by the pulverizing means is mixed with bag filter ash and the like, and the granule having a particle size of 20 μm or less is the same content as the above-mentioned fine particles. What was adjusted so that it may become may be used as PS ash of the molding material of this invention.

  The pulverizing means is not particularly limited as long as it can pulverize PS ash having a particle size larger than that of bag filter ash such as cyclone ash so as to have a particle size equivalent to that of bag filter ash. Examples thereof include an ultracentrifugal mill, a mill, a grinder, a kneader, and a disperser.

  Further, the method for pulverizing the PS ash using a pulverizing means is not particularly limited, and any method of dry pulverization and wet pulverization can be adopted, but from the viewpoint of workability such as sieving after pulverization, It is preferable to employ dry grinding.

  Furthermore, if the pulverizing means has a sieving function capable of separating the pulverized granular material into a predetermined size, only the granular material having a desired particle diameter is recovered from the pulverized granular material. Is preferable.

(Production method)
In the case of forming a molded body with the molding material adjusted as described above, as shown in FIG. 4, first, a predetermined amount of water (for example, 80 g with respect to 100 g of the molding material) is added to the molding material and kneaded. Then, the kneaded product is put into a mold having a desired shape. Then, if the kneaded material is left standing or cured under predetermined conditions while being put in a mold, a kneaded material, that is, a molded body in which the molding material is solidified can be formed.

As described above, a molded body can be manufactured by putting a kneaded product of water and a molding material into a desired mold and curing, but is not limited to such a method, and is a mixture obtained by mixing other members. You may manufacture by putting a smelt in a desired type | mold and curing.
Below, the case where a fiber member is employ | adopted as a member mixed with the molding material of this invention is demonstrated.

Next, the molded product of the present invention will be described below.
The molded body of the present invention is characterized in that the fiber members are connected to each other by a molding material that uses paper sludge incineration ash as a raw material. Specifically, the molded body of the present invention (hereinafter simply referred to as a molded body) can be obtained simply by adding water to a molding material and fiber member made from paper sludge incineration ash (hereinafter simply referred to as PS ash). The fiber member is solidified in a state where the fiber members are connected to each other by the molding material.
In addition, since the molded body of the present invention is molded and dehydrated in the presence of the fiber member, it is possible to form a molded body that generates high strength and to improve the workability of the molding process of the molded body. However, the reason for this will be described later.

  The molding material constituting the molded body is an incineration process (for example, 800 ° C. to 900 ° C.) using a incineration facility for solid content (hereinafter simply referred to as “papermaking sludge”) including papermaking sludge generated when wastewater in the papermaking process is processed. Incinerated ash recovered at the time of ℃).

  Generally, the incineration equipment for incinerating papermaking sludge includes the incinerators described above (for example, fluidized bed incinerators, stalker furnaces, rotary kilns) and granular materials contained in the gas treated by the incinerators (so-called incineration). Incinerated ash collection device that collects ash). This incineration ash collection device generally has the same configuration as described above, and the particle size of the granular material contained in the recovered cyclone ash and bag filter ash is the same as that described above. Ashes containing body.

  On the other hand, cyclone ash and bag filter ash have different particle diameters as described above, but both are obtained by incineration of papermaking sludge as a raw material. It contains.

  In addition, as described above, the papermaking sludge that is the raw material of both contains pulp-derived inorganic substances and filler-derived inorganic substances (kaolin, etc.).

  Therefore, the cyclone ash and bag filter ash recovered by the incineration ash recovery device of the incineration facility when paper sludge is incinerated, as described above, contain components derived from these inorganic substances, and calcium It is considered that (Ca) and the like exist in cyclone ash and bag filter ash in a state such as calcium oxide.

And the molding material which comprises the molded object of this invention mixes the bag filter ash which consists of microparticles | fine-particles which have the above particle diameters, or the cyclone ash which consists of such bag filter ash and coarse particles which have the above particle diameters. Have been adjusted by that.
That is, the molding material of the present invention is adjusted to contain fine particles of 20 μm or less in PS ash, and contains the elements as described above.

  Therefore, the molding material constituting the molded body of the present invention can be solidified by adding water and kneading. In addition, as described above, the molding material is a material having both the excellent points of alite and belite, which are the main components of cement, and therefore can be used in place of cement and gypsum.

When the molded body of the present invention is kneaded by adding water to the molding material as described above, the fiber member is mixed and kneaded, and after molding, the strength is higher than that of the molded body made of only the molding material. A high molded body can be formed.
This is because if the molding material and the fiber member are mixed with water and kneaded and molded, the molding material can be formed in a state where the molding material is mixed between the fiber members. Since it becomes such a structure, if this molded object is dried, it can be solidified in the state which connected the fiber members with the molding material which has the function to solidify itself as mentioned above.

In particular, when the material of the fiber member has a hydroxyl group, adjacent fiber members can be bonded by hydrogen bonding.
That is, the molded body of the present invention is made by adding water to the molding material and the fiber member and kneading → molding → dehydration → drying to solidify the fiber members with the molding material, and the adjacent fiber members to each other. Since both of them can be bonded by the bonding force possessed by themselves, a molded body having high strength can be molded.

(Production method)
The method for producing the molded body of the present invention as described above can employ various methods because it only involves adding water to the molding material and the fiber member, kneading, molding, and drying. Is preferably used for improving the strength and moldability of the molded body (that is, the molded body of the present invention).

As shown in FIG. 4, after the kneading means for kneading the molding material and the fiber member, the kneaded material kneaded by the kneading means is supplied to the molding means. A molded product can be produced by molding the kneaded material provided to the molding means into a predetermined shape, performing pressure dehydration by the pressurizing means, and then drying under predetermined conditions.
Hereinafter, a method for producing a molded body will be specifically described.

  First, the molding material and the fiber member are sufficiently mixed by a kneading means using a kneader or the like, and then water is added to the mixture to knead.

  And before this kneaded material solidifies, this kneaded material is shape | molded by a shaping | molding means. The molding means includes a molding unit that molds the kneaded material into a predetermined shape, and a pressurizing unit that applies pressure to the molded body molded by the molding unit to dehydrate it.

  The molding part only needs to be able to mold the kneaded product into a predetermined shape. For example, a rectangular parallelepiped mold can be used.

  Moreover, a pressurization means will not be specifically limited if a pressure can be applied to the molded object shape | molded in the shaping | molding part, For example, a press etc. can be used. Then, if the kneaded material kneaded by the kneading means is put into a mold or the like and pressed with a press or the like, the kneaded material, that is, excess water present inside the molded body during molding is discharged to the outside of the molded body. be able to.

  Then, if the molded body that has been sufficiently dehydrated by the pressurizing means is removed from the mold and dried while standing or cured under a predetermined condition, it is molded into a predetermined shape (that is, the shape of the mold). The body can be manufactured.

  The pressurizing means is not particularly limited as long as it is a method capable of dehydrating by applying pressure to the molded body in the dehydration step.

  Since the molded body of the present invention is molded in a state where the fiber member is mixed in the molding material as described above, the dehydration step of discharging excess water from the inside of the molded body during molding to the outside of the molded body is facilitated. It can be carried out.

Specifically, if it is subjected to a dehydration process in which the molded body put in the mold by the pressurizing means is pressurized with a press or the like, the water present inside the molded body is formed along the surface of the fiber member. Can be discharged outside. That is, the surface of the fiber member can be functioned as water supply.
For this reason, in the dehydration step, water present in the molded body can be easily dehydrated, so that dehydration can be performed while following the pressure even if dehydration is performed by applying pressure. Then, the workability of dehydration can be improved. And since it can also spin-dry | dehydrate at a high pressure, the density of the molded object after drying can also be improved, Therefore The intensity | strength of a molded object can be made high.

Moreover, since the molded object of this invention is shape | molded in the state in which the fiber member was mixed in the molding material, the shape change when drying after dehydration is small. That is, deformation such as warpage is small when contracted.
For this reason, if the shrinkage | contraction ratio by drying is grasped | ascertained, the molded object close | similar to a desired shape and a magnitude | size can be formed. That is, in the case of the molded body of the present invention, less processing is required to adjust the shape after drying, so that the production efficiency and manufacturing cost when the molded body is commercialized can be suppressed.

  For example, in the case of manufacturing a rectangular parallelepiped molded body, first, water is added to the molding material and the fiber member and kneaded, and then the mixture is placed in a rectangular parallelepiped mold and compressed. At this stage, the dehydrated body is formed into a substantially rectangular parallelepiped. If the dehydrated body is dried, the molded body of the present invention can be formed. Although this molded body contracts more than the dehydrated body, it is maintained in a shape almost similar to the dehydrated body. Then, it can be easily made into a rectangular parallelepiped having a desired dimension by processing to the extent that the molded body is polished.

  In addition, the fiber member which comprises the molded object of this invention does not specifically limit the fiber width and fiber length, For example, an average fiber width is about 1-40 micrometers, and an average fiber length is about 0.1-5 mm. The average fiber width is preferably 1 to 35 μm and the average fiber length is more preferably about 0.1 to 3 mm from the viewpoint of workability in the dehydration step.

  In addition, the material of the fiber member constituting the molded body of the present invention is not particularly limited as long as it has a certain fiber width and the like, for example, a synthetic resin fiber member or a natural product fiber member. Etc. can be used.

  Examples of natural fiber-based fiber members include deinked pulp (DIP), used newspaper wastepaper, magazine wastepaper, and wastepaper pulp manufactured from cardboard wastepaper. Virgin pulp such as thermomechanical pulp (TMP) can be used, but the material is not limited thereto. However, it is preferable to use such a pulp-based fiber member because the fiber member has a hydroxyl group on the surface thereof, so that hydrogen bonds can be generated between adjacent fiber members as described above.

Further, when PS ash mixed with cyclone ash and bag filter ash is used as the molding material of the present invention, the particle size of the fine particles constituting the bag filter ash is smaller than the particle size of the coarse particles constituting the cyclone ash. The fine particles of the bag filter ash are dispersed not only between the fiber members but also between the coarse particles of the cyclone ash.
Then, when a molded body is molded using a molding material using such PS ash, in any part of the molded body, not only between fiber members but also coarse particles of cyclone ash are present between the two. The filter ash can be combined with fine particles of ash. That is, even when such a molding material is used, a homogeneous molded body can be formed.

  Moreover, by adjusting the mixing ratio of the cyclone ash having coarse particles as described above and the bag filter ash having fine particles, the strength of the molded body formed using such a molding material can be adjusted, so It becomes possible to mold a molded body according to the application.

  If the bag filter ash and cyclone ash recovered from the incineration facility have fine particles and coarse particles as described above, if both are mixed at a predetermined ratio, as described above, The molding material which comprises the molded object of invention can be prepared.

  In the case of using bag filter ash and cyclone ash as the molding material constituting the molded body of the present invention, it is preferable to use a material adjusted to have a predetermined ratio as in the case described above.

The method of adjusting the bag filter ash and the cyclone ash so as to have a predetermined ratio is the same as that described above, and therefore the details are omitted.
For example, in the same manner as described above, if a fine particle having a particle diameter of 20 μm or less is adjusted so as to contain 15% by volume or more is used as the molding material constituting the molded body of the present invention, Thus, the molded object which solidifies reliably only by adding water to a molding material and a fiber member can be formed.

  In addition, when using what mixed bag filter ash and cyclone ash with the same mixing ratio as the above-mentioned as a molding material which comprises the molded object of this invention, this effect is the above-mentioned bag filter ash and cyclone ash. Since the same effect as that of a molded body molded using a molding material mixed with a predetermined mixing ratio is obtained, it is omitted.

  Further, as described above, even if the PS ash that is the raw material of the molding material constituting the molded body of the present invention contains PS ash having a particle size larger than that of the cyclone ash, If PS ash pulverized so that the particle size is 20 μm or less is mixed with bag filter ash, etc., and the granular material having a particle size of 20 μm or less is adjusted so as to have the same content as the above-mentioned fine particles, It can be effectively used as a raw material for the molding material of the present invention.

  Furthermore, the pulverizing means can use the same apparatus as described above, and the pulverizing method can be the same method as described above.

  In the above example, the case where the molding is formed by kneading the molding material and the fiber member has been described, but it goes without saying that the molding may be formed by mixing a resin-based binder. In this case, if the mixing ratio of the resin-based binder is adjusted, a molded body having high strength can be produced with the binder. Examples of the resin binder include a phenol resin and an amino resin, but are not particularly limited.

  In Example 1, in order to confirm the usefulness of the molding material of the present invention, the method for preparing a sample was confirmed, and the substance (compound) resulting from the solidification of the molding material of the present invention was a substance (compound resulting from the solidification of concrete ( Compound) was confirmed to be different.

In the experiment, papermaking sludge incineration ash (hereinafter simply referred to as PS ash) recovered when the pulp and paper manufacturing process residue was incinerated as a raw material for the molding material was recovered by a cyclone that is an incineration ash recovery device for incineration facilities. The cyclone ash thus produced and the bag filter ash (hereinafter simply referred to as BF ash) collected by the bag filter disposed on the downstream side of the cyclone were used.
In the experiment, cyclone ash A and cyclone ash B obtained by pulverizing cyclone ash using a pulverizer were used.

The particle size distribution of each ash is shown in FIG. 1, and the cumulative particle size distribution is shown in FIG.
As a result, the cyclone ash was d50: 142 μm, the cyclone ash A was d50: 52.8 μm), the cyclone ash B was d50: 8.25 μm, and the BF ash was d50: 2.74 μm.

In the graph of particle size distribution in FIG. 1, the horizontal axis indicates the particle diameter of the granular material existing in each ash, and the vertical axis indicates the abundance ratio (frequency (volume%)) of the granular material having a predetermined particle diameter. It is a thing. On the other hand, in the graph of FIG. 2, the horizontal axis indicates the particle diameter of the granular material existing in each ash, and the vertical axis indicates the value (volume%) obtained by integrating the abundance ratio of the granular material having a predetermined particle diameter or less. It is.
Moreover, the particle size distribution of each ash was measured using the dry-type particle size distribution measuring apparatus (The Seishin company make, model number; LMS-2000e).

  As shown in FIGS. 1 and 2, the cyclone ash contains about 85% by volume of particles having a particle size of about 50 μm to about 1000 μm and about 3 particles having a particle size of about 20 μm or less. It was PS ash containing about 1% by volume of granular materials having a volume percentage of about 10 μm or less. The BF ash was PS ash containing about 100% by volume of granules having a particle size of about 20 μm or less and about 90% by volume of granules having a particle size of about 10 μm or less.

  Cyclone ash A was PS ash containing about 30% by volume of granules having a particle size of about 20 μm or less and about 20% by volume of granules having a particle size of about 10 μm or less. Cyclone ash B was PS ash containing about 65% by volume of granules having a particle size of about 20 μm or less and about 55% by volume of granules having a particle size of about 10 μm or less.

An ultracentrifugal crusher (manufactured by Mitamura Riken Kogyo Co., Ltd., model number: ZM1000) was used for the pulverization treatment of cyclone ash. The cyclone ash A is obtained by passing the cyclone ash once using the pulverizer and collecting it.
Further, the cyclone ash B is a pulverized product obtained by further supplying the pulverized product collected by passing through the pulverizer to the pulverizer and further pulverizing it twice. That is, the cyclone ash B is obtained by pulverizing the cyclone ash 3 times with a pulverizer.

  In the experiment, molding materials (A1 to A4, B1 to B3, C1 to C3) were prepared by blending the cyclone ash, cyclone ash A, cyclone ash B, and BF ash at the ratios (mass ratios) shown in Table 1.

  Next, the crystal structure of the molding material was confirmed.

  In the experiment, the crystal structure of the molding material (the molding material corresponding to the molding material A4) was measured using an X-ray diffraction apparatus (manufactured by Rigaku Corporation, model number: Ultimate IV).

The measurement conditions were as follows.
X-ray source: Cu-Kα
Tube voltage: 40 kV
Tube current: 40 mA
Scanning range: 2θ = 5-60 °
Step width: 0.1 °
Scan speed: 4 ° / min

In addition, as a comparative sample, each commercially available cement manufactured by A company, manufactured by B company, manufactured by C company, and manufactured by D company was used. From each cement, XRD spectra having almost the same peak shape were obtained. Therefore, in the following, as a comparison data, a cement manufactured by A company will be described as a representative.
In FIG. 3 and the following description, the cement manufactured by Company A is simply referred to as cement.

  The experimental results are shown in FIG.

  FIG. 3 shows the XRD spectrum of the cement on the upper side and the XRD spectrum of the molding material on the lower side.

  As shown in FIG. 3, peaks (peaks a to h) similar to eight typical peaks of alite were detected in the XRD spectrum of cement.

  On the other hand, as shown in FIG. 3, in the XRD spectrum of the molding material, a spectrum different from alite was detected (peaks I to V).

  Therefore, it was confirmed that the molding material of the present invention can be assumed to be composed mainly of a substance (compound) different from alite, which is the main component of cement.

Furthermore, in order to confirm that the molding material of the present invention is composed mainly of a substance (compound) different from alite, which is the main component of cement, the d value of each peak detected in the XRD spectrum. And the integration ratio (I / I ₀ ) was determined.

Table 2, typical peak d values and the integral ratio of the alite and (I / _{I 0),} cement peak d values and integration ratio obtained from the (peak a~h) _{(I /} I 0) And the d value and integral ratio (I / I ₀ ) obtained from the peaks (peaks L, N, R and U) detected at positions overlapping the alite peak of the molding material.

As shown in FIG. 3, four peaks among 14 typical peaks I to V in the XRD spectrum of the molding material were detected at positions close to the peak of alite. However, as shown in Table 2, the I / I ₀ determined from the peaks L, R, and U of the molding material was different from the I / I _{0 of} alite.
The peak N of the molding material was used as a reference when calculating the I / I ₀ values of the peaks L, R, and U.

  From the above results, the crystal structure that develops the solidification phenomenon caused by adding and kneading water to the molding material of the present invention is completely different from the crystal structure produced by alite when the cement solidifies. Was confirmed. In other words, the molding material of the present invention is composed of a substance (compound) that is completely different from alite, while having the advantages of alite, which is the main component of general cement. Was confirmed.

  In Example 2, in order to confirm the usefulness of the molding material of the present invention, the properties of a molded body formed from a plurality of molding materials adjusted in Example 1 were confirmed.

(Manufacture of molded products)
In the experiment, each molding material (A1 to A4, B1 to B3, C1 to C3) prepared at the blending ratio shown in Table 1 of Example 1 was processed by the following method, and a molded body using each molding material was processed. Obtained (see FIG. 4).

First, water (about 160 g) was added to the molding material (about 200 g) and kneaded. This kneaded molding material was put into a mold (wood) and press-dehydrated to form a plate, thereby obtaining a dehydrated molded body.
The dehydrated molded body was dried on a weight to form a dried molded body. The dry molded body had a length of about 120 mm, a width of about 60 mm, and a thickness of about 36 mm.

(Measurement of strength of dried molded body)
The dry molded body was measured for the maximum load at break by a three-point bending test, and the bending stress (MPa) was calculated from the maximum load and the dimensions of the dry molded body. Note that the distance between fulcrums in the three-point bending test is 30 mm.
The bending strength test was measured in accordance with JIS A 1106.

  The experimental results are shown in FIG.

As shown in FIG. 5, the other molded bodies other than the molded body A1 had a bending strength of about 0.3 MPa or more. This molded body A1 is a molded body molded using a molding material made only of cyclone ash.
On the other hand, the compacts B1 and C1 are compacts molded using a molding material composed only of cyclone ash (cyclone ash A and cyclone ash B) obtained by pulverizing cyclone ash as a raw material, and each compact B1, The bending strength of C1 was about 0.3 MPa and about 0.4 MPa, respectively.

  Next, the relationship between the particle size distribution of the molding material and the physical strength (bending strength and compressive strength) of the molded body molded using the molding material was confirmed.

  In the experiment, a molded body formed to have a thickness of about 120 mm, a width of about 60 mm, and a thickness of about 36 mm was used.

The bending strength was measured according to JIS A 1106 as in the case of the bending test described above. The load speed at that time was 0.3 mm / min.
The compressive strength was measured using a Tensilon material universal testing machine (manufactured by A & D, model number: RTG-1310). The load speed at that time was 0.6 mm / min, and the measurement area was 40 mm × 40 mm.

  The experimental results are shown in FIG.

FIG. 6 shows the relationship between the bending strength and compressive strength and the particle size distribution d (0.5).
As shown in FIG. 6, the bending strength was confirmed to be a value of about 1.17 to about 1.57 MPa at a particle size distribution d (0.5) of about 2 to about 4 μm.
Further, as shown in FIG. 6, it was confirmed that the compressive strength had a particle size distribution d (0.5) of about 5.36 to about 6.28 MPa at about 2 to about 4 μm.
It was confirmed that the strength of the molded body was maintained for a long time.

From the above results, it is necessary to prepare PS ash so that the molding material contains granules having a particle size of about 20 μm or less at a ratio higher than 3% by volume. Granules having a particle size of about 20 μm or less are required. It was confirmed that a molded body having a bending strength of about 0.3 MPa or more can be formed by preparing so as to contain about 30% by volume.
In particular, when the particle size distribution d (0.5) of the molding material is adjusted to be about 2 to about 4 μm, a molded body having a bending strength of about 1.17 MPa or more and a compression strength of about 5.36 MPa or more. It was confirmed that can be formed.
Further, even if PS ash is prepared so as to contain particles having a particle size of about 10 μm or less in a proportion higher than about 20% by volume (molding material B1), a molded body having a bending strength of about 0.3 MPa or more. It was confirmed that can be formed.
On the other hand, with a molding material consisting only of cyclone ash containing almost no granule having a particle diameter of about 20 μm or less (for example, cyclone ash corresponding to molding material A1 in Table 1 of Example 1), it is molded into a molded product having strength. I was able to confirm that I could not do it.

Moreover, as shown in Example 1, the crystal structure that expresses the solidification phenomenon generated by adding water to the molding material of the present invention and kneading is the crystal structure generated by alite when the cement is solidified. Since it was completely different, the molded article of the present invention molded using such a molding material has the property of maintaining strength over a long period of time while having physical properties similar to alite. It was confirmed that
In other words, the molded article of the present invention uses a molding material that is composed of a substance (compound) that is completely different from alite, while having the advantages of alite, which is a main component of general cement. Thus, it was confirmed that a molded body similar to the case where a binder such as cement or gypsum was used could be formed.

  Therefore, it is possible to produce a molding material that solidifies by simply adding water to the molding material of the present invention, and it is considered that a molded body can be formed if used instead of a binder such as cement or gypsum.

  In Example 3, in order to confirm the effectiveness of the molded body of the present invention, the properties of the molded body formed by changing the blending ratio of the molding material and the fiber member shown in Example 1, and these molded bodies The behavior during dehydration and drying was confirmed.

  In addition, the apparatus and method similar to Example 2 were used except the measurement apparatus and the measurement method shown below used for experiment.

In the experiment, from the experimental results of Example 2, as the molding material, a mixture (mass ratio) of bag filter ash, cyclone ash, and cyclone ash A was used as follows.
Bag filter ash (BF ash): Cyclone ash = 4: 6 (hereinafter referred to as PS ash)
Bag filter ash (BF ash): Cyclone ash A = 4: 6 (hereinafter referred to as cPS ash)

  In addition, used waste paper deinked pulp (DIP: average fiber width of about 20 μm, average fiber length of about 0.92 mm) was used as the fiber member. The average fiber width and average fiber length were measured using a fiber tester manufactured by Lorentzen & Wettre (manufactured by Lorentzen & Wettre, model number: CODE912).

The above molding material and DIP were adjusted so as to have the blending ratio shown in FIG. 7, and a plurality of molded bodies having the same size as that shown in Example 2 were molded (see FIG. 4).
In addition, a high pressure jack (manufactured by AS ONE Co., Ltd., model number: J-15) was used as the pressurizing means.
Moreover, after dehydrating using a press machine, it removed from the type | mold and dried using the drying machine (made by Yamato Scientific Co., Ltd. model number; DX400).

(Measurement of strength of dried molded body)
Regarding the properties of the molded body, the maximum load at break was measured by a three-point bending test, and the bending stress (MPa) was calculated from the maximum load and the dimensions of the dried molded body. Note that the distance between fulcrums in the three-point bending test is 30 mm.
The bending strength test was measured according to JIS A 5905.

  The experimental results are shown in FIG.

As shown in FIG. 7, it was confirmed that the strength of each molded body increased with increasing press pressure. That is, since the density of each compact became higher as the press pressure increased, it was speculated that the density of the compact became higher as a result of appropriate dehydration following the press pressure.
Therefore, since the molded object of this invention can be pressure-molded, it has confirmed that the molded object which generate | occur | produces desired intensity | strength can be formed.

  The molding material using papermaking sludge incineration ash obtained by incinerating the paper pulp manufacturing process residue of the present invention as a raw material is solidified only by adding water, so that it is an industrial material instead of a binder such as cement or gypsum, It is suitable as a material for structural materials such as building walls, beams and blocks. In addition, the paper sludge incineration ash obtained by incineration of the paper pulp manufacturing process residue of the present invention and the molded body made of fiber members are solidified only by adding water, so binders such as cement and gypsum are used as raw materials. It is suitable as a structural material for industrial materials, building wall materials, beams, blocks, etc.

Claims (23)

It is a molding material composed of papermaking sludge incineration ash obtained by incineration treatment of paper pulp manufacturing process residues,
The paper sludge incineration ash is
A molding material characterized by being adjusted so as to contain fine particles having a particle size of 20 μm or less at a ratio of 15% by volume or more. The paper sludge incineration ash is
The molding material according to claim 1, wherein the molding material is adjusted so as to contain coarse particles having a particle diameter larger than that of the fine particles. The fine particles are
The molding material according to claim 2, comprising a material prepared by pulverizing the coarse particles. The fine particles are bag filter ash,
The coarse particles are cyclone ash,
3. The molding material according to claim 2, wherein the bag filter ash and the cyclone ash are adjusted to have a mass ratio of 10: 0 to 2: 8. Papermaking sludge incineration ash obtained by incineration of pulp and paper manufacturing process residues,
A method for producing a molding material, characterized in that the proportion of fine particles having a particle diameter of 20 μm or less is adjusted to 15% by volume or more. The paper sludge incineration ash is
6. The method for producing a molding material according to claim 5, wherein adjustment is made so as to contain coarse particles having a particle diameter larger than that of the fine particles. The fine particles are
The method for producing a molding material according to claim 6, comprising a material prepared by pulverizing the coarse particles. Using bag filter ash as the fine particles, cyclone ash as the coarse particles,
The method for producing a molding material according to claim 6, wherein the bag filter ash and the cyclone ash are adjusted to have a mass ratio of 10: 0 to 2: 8. It consists of a molding material consisting of papermaking sludge incineration ash obtained by incinerating the pulp and paper manufacturing process residue, and a fiber member,
The said fibrous member is connected with the said molding material, The molded object characterized by the above-mentioned. The molding material is
The molded article according to claim 9, wherein the molded article is adjusted so as to contain fine particles having a particle diameter of 20 µm or less at a ratio of 15 vol% or more. Mixing the molding material and the fiber member;
The molded body according to claim 9 or 10, wherein the mixed material is kneaded and molded. The molded body according to claim 11, wherein the kneaded mixed material is kneaded and pressure-molded. The paper sludge incineration ash is
The molded article according to claim 10, 11 or 12, wherein the molded article is adjusted so as to contain coarse particles having a particle diameter larger than that of the fine particles. The fine particles are
The molded product according to claim 13, comprising a product prepared by pulverizing the coarse particles. The fine particles are bag filter ash,
The coarse particles are cyclone ash,
14. The molded body according to claim 13, wherein the bag filter ash and the cyclone ash are adjusted to have a mass ratio of 10: 0 to 2: 8. The fiber member is
The molded article according to claim 9, 10, 11, 12, 13, 14 or 15, which contains fibers having an average fiber width of 1 to 35 µm and an average fiber length of 0.1 to 3 mm. The said fiber member is a pulp, The molded object of Claim 9, 10, 11, 12, 13, 14, 15 or 16 characterized by the above-mentioned. Mixing a molding material made of paper sludge incineration ash obtained by incineration of the pulp and paper manufacturing process residue, and a fiber member,
A method for producing a molded body, which comprises kneading and molding the mixed mixed material. The method for producing a molded body according to claim 18, wherein the kneaded mixed material is kneaded and pressure-molded. The molding material is
20. The method for producing a molded body according to claim 18 or 19, wherein the papermaking sludge incinerated ash is adjusted so as to contain fine particles having a particle diameter of 20 μm or less at a ratio of 15% by volume or more. The fiber member is
21. The method for producing a molded article according to claim 18, 19 or 20, wherein the molded article is adjusted to contain fibers having an average fiber width of 1 to 35 [mu] m and an average fiber length of 0.1 to 3 mm. The paper sludge incineration ash is
The method for producing a molded article according to claim 20 or 21, wherein the molded article is adjusted so as to contain coarse particles having a particle diameter larger than that of the fine particles. Using bag filter ash as the fine particles, cyclone ash as the coarse particles,
The method for producing a molded body according to claim 22, wherein the bag filter ash and the cyclone ash are adjusted so that the mass ratio is 10: 0 to 2: 8.