TW527455B - Method for treating a mixture containing organic substances and white inorganic particles, material made thereby and method using the same - Google Patents

Abstract

The purpose of the invention is to provide a treating method capable of improving the utilization value of paper sludge discharged upon papermaking or achieving the recycling of the sludge as its purpose, and a material, particularly, a recoverable white inorganic particle having excellent abrasive property and stable quality, obtained from the treatment. The means is to apply the step of carbonizing treatment to a mixture containing organic substances and white inorganic particles under the anaerobic condition limiting the existence of oxygen-containing gas below the temperature of 1000 DEG C (preferably at least 450 to 700 DEG C) in the first and second indirect heating furnaces 3, 7; then, apply heating treatment to the carbide obtained after carbonization at the temperature range of 500 to 1000 DEG C via the third indirect heating furnace 10 under the existence of oxygen-containing gas which can be controlled by oxidizing the carbon, to decarbonize the carbide; and the white inorganic particles with white degree above 70% (preferably above 80%) are achieved.

Description

527455 V. Description of the invention (1) [Technical field to which the invention belongs] The waste H, which is used as the raw material for waste, is returned to the household H. It should be used in the following processes:

The papermaking of the discharged steel is in the right of mud, etc. # T Recovers a white mixture of high whiteness suitable for use in papermaking, etc., which is obtained by the recovery (treatment) method. ] 'White inorganic particles and methods of using them. The white inorganic particles are used as agents, coatings, printed products, and printing agents in the city. The amount is (molded product, film = filler for industrial filling: dagger filling = etc.): The two inorganic particles use the most amount of kaolin clay or calcium carbonate, etc., as a representative example of the use form of "Korean production mouth." Take the example of the body and again, in order to change the paper cover, smoothness, etc., the pulp is : Η: The white inorganic particles of optical special materials, for the purpose of papermaking. Zai; Tianli; = Filling is the main purpose of improving the printability is also widely conjugated and adhesives as the main component of Xiang枓 LING MA: White inorganic particles, 你 Yan Tian L, Yan 枓 coating on paper (raw paper). Also: 甬 = white filling machine for coating or coating purposes , Indium, barium, satinwhite, satin white, calcium, and sulfuric acid as the main body, and according to need, it should be properly mixed with a chemical (known as a plastic pigment) to give more than one kind of organic Yan

C: \ 2D-CODE \ 90-ll \ 90ll7420.ptd Page 6 527455 V. Description of the invention (2) On the other hand, the paper industry produces so-called papermaking sludge. The sludge includes fibers such as pulp made from papermaking materials. Organic substances based on binders (such as starch, synthetic binders, etc.) or inorganic substances based on the above-mentioned white inorganic particles are contained in wastewater and treated as solid raw materials without being used; in the paper E-forming step Washed out lignin, microfibers, or used paper-making fillers; printing inks attached to it; and residual sludge produced in biological wastewater treatment steps. Λ, the remaining sludge (produced in the biological wastewater treatment step) is the source of the sludge: ① during the papermaking process through the metal mesh flow in the paper sales step to remove the foreign matter contained in the treatment process, de-blacking process Producers; and ③ those who are pulping and treating or washing and regenerating, separate the waste water containing these solids / / lt, the solids separation device of the section produced in the process, and apply biological treatment such as activity if necessary The sludge treats two things, then, k. After separation and recovery from the above treatment, :: ΐΓ is placed. The remaining sludge produced becomes papermaking. In recent years, the amount of sludge has increased with the utilization of used paper. Among them, the new: "" Origin of the second deinking step "has a high utilization rate. * This is relatively:" two less. "This type of old paper / sludge produces more s. This is 3 of the inorganic substances ( Utilization peak of inorganic Yanhu ,, or high-quality old paper; I ;, also ^ Μ., The production of organic paper or high-quality old paper is less than that of high-quality old paper. Utilization of paper for sale in Shangpei 5-heart A A trophy use of helmets for sale, sale, sale, sale, sale etc

9〇117420. Ptd is one of the reasons to promote m + fine + u m. In order to use paper for sale, we must mention 7 in order to enter the sales rate of paper 527455. 5. Description of the invention (3) $ noodles. When the utilization rate rises, it will cause a new increase in sludge production. Question 〇 ^ Yu'In order to overcome the large amount of sludge, in the past, it is often separated from wastewater ^ t and the mud is directly dewatered after being dewatered, and the machine uses a fluidized bed furnace or 01 " 61 ' The incinerators such as fUrnaCe burn rich materials to recover energy and 'require volume reduction of sludge. _ ΐ When the mud is burned in the incinerator, 'Although it is possible to take away the unused and discarded,' 'Organic matter can be efficiently retrieved and recovered with energy, but because the sludge contains sophomore inorganic matter, a large amount of residue remains after it is incinerated. (Gray) problem. , Etc. Γίί have-some are used to mix in cement or used to improve the bad temples, and most of them are disposed of as industrial waste by buried. Because it is not only about organic matter recovered from incineration as an energy source, but also related to: If the inorganic matter remaining in the two ash can be reused as a paper-making sweet-colored inorganic particle (filler for filling, pigment for coating) , The result can be I, not only can reduce the need for buried disposal, but also can lead to an increase in the utilization rate of the old paper which has low utilization rate. However, incineration ash has the following difficulties: depending on the state of combustion, sometimes the whiteness is reduced. Lu, or the conclusion of the sintering progress of inorganic substances (incineration ash), becomes irregular and uniform in particle size, and the large particles cannot be directly used as white inorganic particles for papermaking. Under this situation, Japanese patent special Kaiping 10_0 298 1 No. 8 = 0- ^ 5055 has the following proposal: Mud mud is burned in the presence of oxygen for a special day ^ = organic matter is burned, and the remaining ash is supplied to the incinerator to improve the whiteness. A However, the technology contained in the above two communiques is to recover the heat that has passed through paragraph-

^ 27455 V. Description of the invention (4) White; After 5 :: Π (.ash): The second stage of the calcining furnace is used to improve the whiteness. The first stage belongs to the method of combustion treatment, and the resulting ash is reached. And it proves that 'it is difficult to use the burning of the second paragraph [problems to be solved by the present invention] waste Π: all: Π nature, what is urgently needed now is to reduce the industry ": abandon π heavy :::: With = of =, what is required is the benefit of papermaking sludge (which belongs to this industrial waste); f: purpose: to improve the purpose of the present invention, in particular to improve: ϋ = obtained = completely burned residual organic matter to Carbon is modified by whiteness = as below, the method of recycling the son of the fact that has excellent wear-).疋 0 Mussels white inorganic particles [Solutions to solve the problem] In order to solve the above problems, the present invention advocates the same as ... mud recovery of white inorganic side; and: often, the incineration method is incompatible with the organic matter contained in the incineration object: incineration In the field, the exhaust gas is burned and discharged [by two openings = invite water vapor, etc., the purpose of the present invention is to use the = knife ~ this relativeization: ^ decalcification by calcination treatment structure ::: management Carbon ::! Machine, a mixture of white inorganic particles; /: Features: Under the condition, the temperature H body j storage treatment

90117420.ptd Page 9 527455 V. Description of the invention (5) " ~ 一 ^ ---- steps; the carbides obtained by the carbonization treatment can make the carbonization at 450 C ~ 1000 ° C In the presence of an oxygen-containing gas controlled in an oxidation manner in a temperature range, heat treatment is applied to decarburize to achieve a whitening step in which the whiteness of the white inorganic particles is 70% or more. The temperature of the fracturing treatment can preferably be set within a range of at least 450 to 700 ° C. The papermaking sludge contains pulp residue components, viscous components, etc. After drying, the mixture containing organic matter and white inorganic particles is restricted to oxygen-containing gas. Under the existing oxygen-depleted state, the carbonization treatment is applied at a temperature of 45 ° to 65 ° and 50 ° to 60 ° C (preferably) for 3 to 60 minutes. Then, a continuous method or a batch method is used. The calcining furnace in the form is calcined at a temperature of 4500 to 65.0 (preferably at 500 ° C to 600 ° C) for 60 to 180 minutes. It can be performed at a temperature of at least two stages. Carbonization treatment. More preferably, the carbonization treatment belongs to indirect heating. It is also preferable that the whitening by decarbonization is performed at a temperature of at least two stages (temporarily decarburization-whitening), which is indicated below. Same) treatment. More preferably, the whitening treatment belongs to indirect heating. In the case where the mixture contains kaolinite, it is preferable to control the decarburization-whitening treatment in such a way that the kaolinite can be made amorphous. The supply amount of the oxygen-containing gas is adjusted to a temperature of decarburization-blanching treatment below 800 ° C. "It is desirable that the object to be treated can be cooled below 40 ° C once during the carbonization treatment and decarbonization-blanching treatment. After the temperature, the subsequent treatment is performed. Preferably, the object to be treated is brought into contact with water and / or water vapor

C: \ 2D-C0DE \ 90-ll \ 90117420.ptd Page 10 527455 5. Description of the invention (β) Cold section. The above method can also be applied in the case where the mixture of the main white inorganic particles is made of paper, mud, or sapwood and / or low-grade old paper. Dilute the white inorganic particles with I using an aqueous medium ~ ^: to an aqueous suspension, and then adjust the pH of the aqueous suspension to 8 and use it. It is more preferable to use carbon dioxide to adjust the above-mentioned aqueous suspension P to 8 to 13 before use. [Embodiment Mode of the Invention] FIG. Γ illustrates the recovery steps of the present invention under / f FIG. 1. The procedure of the method of recovering white inorganic particles in this Λ. 51 for ΐ 当 Dangyuan !! of mud. Secondly, 52 includes drying, thermal separation, etc .: Γ reverses it; 53 is a final whitening process step. Will swim :: off! This step is collectively referred to as a heat treatment step. After the heat treatment, the steps are collected into white machine particles, and 54 is the crushing step. After these steps are explained. Dansheng is pigment, filler and so on. The following (sludge) Sludge 51 is the waste generated from sewage (existing in the sewer, ^ r ^. Sewage or factory wastewater due to: f 二) ,, n Settled and separated by a clarifier or a coalescence sedimentation tank :: When the material is 乂The solids contained in the waste water by waste: put: come ;: M β J recovers 0 through φ water from / in mud # or incineration: ground waste. In the case of this embodiment mode, the sludge is subjected to a desulfurization treatment and a decarburization-whitening treatment, thereby performing a color

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52 ^ 455

V. Description of the invention (7) Regeneration of materials. In addition, low-level old paper (containing a lot of impurities such as miscellaneous paper, which is difficult to reuse as a raw material for papermaking) or RPF (R efused P aper & P 1 astic F) ue 1) is expected. In the present invention relating to the use of papermaking raw materials, the papermaking raw materials are made from "'sludge'. Sludge is the preferred raw material. Therefore, the following examples of the use of papermaking raw materials are derived from sludge. The source of papermaking from sludge is made from pulp + , Waste paper recycling step, and the waste water lost in the papermaking step (including the "drainage" referred to by the sundial, the same applies hereinafter). The solid content ratio is the best. The large amount of iron-containing sludge Question. Regarding the coagulant in the waste water treatment step of the square paper mill to reduce the amount of iron. Furthermore, it is feasible to remove the iron flakes mixed in the sludge and cannot be mixed. In addition, the preferred large sintered blocks. These foreign matter removal objects The form can be effectively removed-whitening treatment, pulverization treatment, etc. 'As far as possible in the previous step, the ingredients or% are effective ingredients. Before granulation, granulation (granulation) and then' fine particles will be integrated, high Efficiency after carbonization. Furthermore,

According to another, the iron content (Fe content) in the sludge can be 5.0% by weight or less, and 3.0% by weight may cause a problem that the whiteness cannot be sufficiently improved. Preferably, for example, a coagulant is used. To separate solids, use non-ferrous materials, install magnets, including iron wires, nails, etc. in the classifier, or try to make them 'remove foreign matter or rough removal according to needs. It is best to cooperate with sludge and remove The method is provided between the carbonization treatment and decarburization treatment steps, and more preferably, it is removed. Again, (weight) or w ΐ% shown in this specification, unless otherwise noted. It is also feasible to carbonize the sludge on charcoal. After this granulation treatment, fine particles can be prevented from scattering, and

i. Description of the invention (8) (due to granulation), extremely good efficiency, small change in the size of the ancient ^ size, increased carbonization efficiency, good thermal decomposition of the water-containing state, and can achieve small equipment化 ° 等 方 、 去 来 #: Huaran can also use rolling granulation method, stirring granulation method *, then == :: But if using the compression molding method dried on mud, about dry granulation ;: ,, 'spoon heat energy, so better. And other compression molding machines. It is desirable to use a compactor or a roller compactor to force the rod into a compression molding machine to be used, and then use the screw to form the mud. The soil is light, and the roller can be pressed to rotate (carbonization step). In the carbonization step 52, the solid content of the sludge, corpse, and ^ (solid content = drying and carbonization by thermal decomposition. Sludge water machine) The ability is different. = Within the range of 5% to 60% 'because the hydrated mud is dried by ITO. It is best to use it during the first half of the carbonization step. Effectively achieving thermal points', it is possible to perform carbonization without distinguishing between the drying and thermal decomposition of the sludge. However, it is better to set a dry temperature zone and a thermal decomposition shirt separately. That is, the carbonization of the sludge. In the process, because the drying temperature of the organic matter is different from its thermal decomposition temperature, when the heating zone is set at two or more stages, the carbonization of the sludge can be effectively achieved. If the incineration treatment method according to the conventional technology is sufficiently high at 80 ° C or higher The incineration (combustion) conditions of oxygen supply can be inferred (results of carbonization treatment) as follows: pulp and other substances are burned and 'silicon dioxide' and the like are melted and grown around the remaining carbon to form residues. The solid black band was then clay component of the original structure is destroyed.

ill

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527455 V. Description of the invention (10) Although the organic matter can be burned simultaneously in the carbonization step in a way that can maintain the original state of the organic matter, the incineration is opposite, resulting in as far as possible the fire caused by the limitation of the sludge formation step. The silt is steamed to replace the water produced by setting the oxygen gas (air) in the required size. Better oxygen exists in the furnace for the heating of the mud. From the economic point of view, it is best to use the carbonization equipment that burns the oxygen (air) and the sludge to prevent hot air. The most preferable is the carbonization of the heating chamber for 5 carbonization heat. The heating of carbon and materials from the beginning of the implementation of carbon if there are aerobic organic matter, pigment-containing oxygen gas furnace gas input when the input is in the furnace gas or vapour, so that the carbonization of the carbonized carbon treatment gas storage Combustion temperature is not affected by (air) The temperature within the range that does not accompany the temperature of the atmosphere is difficult to distinguish from the carbon generated in the furnace. However, it is best to fix the carbonization and the calcium carbonate derived stone is in reverse, then burn. The degree of hope rises into the above oxygen. There is also a combination that will not increase the temperature when the result is thermal denaturation in the furnace. The method 'may be too good (the monoxide is turned into an oxygen-depleted state') because of the atmosphere contained in the mud. Therefore, it is better to prevent the lowest mud accompanied by hydrogen, which is the temperature of the volatile organic matter. Therefore, in the carbon to stop the sludge, the limit is used to quickly and benefit from the "-φ \\\ method. Although the lamp gas can be used to contact the sludge, the direct contact is good. The method is that although electric heating is also feasible, but it is heated by the combustion gas of oil or heavy oil. Direct heating is also possible, but because the mud contained in the hot air causes the silt to ignite and burn, it is better to install partition walls in this way. Therefore, the closed chamber which can restrict the inflow of air. That is, the heating furnace is connected between the sludge carbonization chamber and the carbonization h heavy structure.

90117420.ptd 527455 V. Description of the invention (11) Heating the sludge to dry it. Is the combustion gas,

Prepare the exhaust gas. For the use of incineration equipment, the existing incineration equipment (such as the type of stoker furnace), Sanxi, and-> type 1 can be exemplified by the grate type and the hot air combustion type. Of course, it is also possible to heat the sludge heating chamber directly by using the two-material mixing type heater, and set the burner on the outside to set the combustion furnace inside, thereby generating bright ^ $ may be indirect heating in the aging mud drying After the 'drying in mud', the beans are decomposed in January. At this time, there will be oxidization, and the gas contained in the sludge will be generated. However, because the furnace contains substantially no oxygen, methane, ethane, etc. are combustible. Combustible gas can be sucked into the hot air generating device, which can suppress the combustion of organic matter. The heat source of transformation. Drying and carbon as sludge (decarbonization-whitening treatment step) Secondly, in the whitening treatment step 53, carbonization and decarbonization-whitening treatment steps are performed to make the carbides away from stone-whitening. In the material. Due to the high heat of flammable gas; to; then recovering the white inorganic cyanide does not exist in the furnace, which can suppress the volatilization in the carbonization step ^

The burning of the above, Yao. Furnazaki caused by & burnable sludge flakes caused by burning of white inorganic particles that are not burned by Greeks Decarbonization-whitening step, denaturation. That is, the oxygen (air) required after the carbonization step. L can be fully supplied to the oxidation of the carbide. Due to the carbonization step in the previous stage, the evil is called an oxygen-enriched state. The group of strip decarburization-whitening treatment steps will whiten the decarburization-whitening chamber with white inorganic particles. The degree of dishing can reach 45 (rc ~ 100 (rc range ^)

527455 V. Description of the invention (12) When heated by temperature, it can effectively improve the whiteness. In the decarburization-whitening room, since the temperature of the atmosphere in the furnace is set to 5,000 or more, the carbon derived from the organic matter contained in the carbide is oxidized, and the effective whitening of the white inorganic particles can be achieved. Decomposition-whitening is performed at a temperature lower than 45 0 ° C, and the treatment time becomes longer. If it is performed at a high temperature exceeding 丨 0 0 t, the melting and sintering of white inorganic particles will progress. Causes difficulty in fine pulverization after decarburization-whitening. In addition to this disadvantage, it also enhances the coloring tendency, so it is not suitable. Regarding the treatment time, it should be considered not only in terms of the form, quality, moisture, and carbon content of the carbide, but also in terms of economic effects and environmental aspects ^, but it is preferably about 30 minutes to 2 hours. Finally, when the carbide is decarburized and the whiteness of the white inorganic particles reaches 70% or more (preferably 80% or more), an inorganic particle suitable for a raw material for papermaking can be produced by using this. @ & In particular, the decarburization-whitening treatment step is also referred to as the calcination step. In the case where this step is carried out by a piece of processing, at a temperature of 450 to 6 50 ° C (preferably 5 0 ° C to 6 0 ° C) and 60 to 180 minutes in an oxygen-rich state, As a result, it can be inferred that the combustion of carbides occurred, and the inorganic components such as calcium carbonate, kaolin, and silicon dioxide were reused, and the extent of the problem remained. When the temperature is lower than 450, organic carbonization is difficult to progress, and when the temperature exceeds 65 ° C, clay formation is easily destroyed, so in order to obtain a stable recycled material knife The range of the processing temperature is adjusted to match the components of the papermaking sludge. In the decarburization-whitening treatment step, if the carbide is heated rapidly, it will become white.

527455 V. Description of the invention (13) Melting and melting of organic particles ~ Burning of organic particles, so that the carbon molecules are contained in white and no heat. More preferably, Γ is: to prevent sharp processing of finished compounds. In the decarburization-whitening treatment γ and W temperature zone, decarburization-whitening is performed_ot: ~ 100〇t: pt; ^ M, 45 (rc ~ 60 ° ° c or more in the heat treatment,-/ ϋMore The heating zone of the stage. When the second-stage temperature does not increase to 疋, and the subsequent stage makes the object to be treated, it is more preferable to perform decarburization in the preceding stage. The temperature change of this property is difficult to measure f soil The temperature itself. But the localized temperature sensor of the carbide is white 2 A. Therefore, the 'better I' is set in the whitening room to supply oxygen containing (/ ^ atmosphere temperature can reach 80 0 ° cu. The resulting carbides (this;: two) 2 = caused by the temperature of the spontaneous combustion of carbides to be controlled by a rapid rise in temperature Ninomiya Λ 'to effectively reduce kaolin

, Said chroma. This is due to the denaturation of kaolinite in the decarburization-whitening treatment step at 450 C ~ 1000 ° C to denatured to form a high whiteness calcined kaolin. Therefore, the processing temperature of the carbonization-whitening process step is set to 450. (: ~ 1 0 0 0. (: can be used to achieve whiteness above the whiteness of the white inorganic particles originally contained in the sludge. To prevent the white inorganic particles from melting to sintering, it is more preferable to set it to 6 〇〇〇C ～ 900 〇C. However, it is important that the sludge before treatment contains kaolinite and calcium carbonate

527455 5. In the case of the description of the invention (14), the influence of the following conditions is taken into consideration: that is, calcium carbonate reacts with the calcined kaolinite and the white inorganic particles are melted to sinter. These white inorganic particles are not suitable in addition to the inconvenience of making micro-pulverization after decarburization-whitening difficult, and also have the disadvantage of enhancing the coloring tendency. Although the above conditions vary depending on the calcium carbonate content, it is best to manage the temperature of the carbide itself in order to increase the whiteness of kaolinite while preventing the white inorganic particles from sintering to sintering. However, the local temperature change of carbides is difficult to measure. Therefore, it is preferable to provide a temperature sensor in the albino chamber so that the atmosphere temperature of the albino chamber can reach below 80 ° C to supply an oxygen-containing gas (air) so that the spontaneous combustion of carbides does not occur. The resulting sharp rise in the temperature of the carbide itself is managed. According to another, kaolinite is a octahedral type 1: 1 layered silicate, which includes not only kaolinite in a narrow sense, but also water-based dickite, pearlite, and Syria Yong Shi (ha 1 1 oy si te) o To prevent the decarbonation of carbonic acid, the white inorganic particles after decarburization will be mixed with carbonic acid from mud. Therefore, the residual carbon ratio of the white inorganic particles sometimes shows a higher value after the decarburization-whitening treatment. Although the carbon derived from organic matter is difficult to distinguish from the carbon derived from calcium carbonate, it is preferable to reduce the residual carbon rate derived from organic matter as much as possible. It is best to set the residual carbon ratio from organic matter to 1% or less, so as to recover white inorganic particles suitable for papermaking. For the heating method of carbides, it is also possible to use combustion gas to perform direct heating, but this direct heating causes the unburned carbon contained in the hot air to contact the whitened white inorganic particles, resulting in a decrease in whiteness. Therefore, it is best to use Set up partition walls in such a way that the mud does not come into direct contact with hot air. That is, in decarburization-white

527455 V. Description of the invention (15) The chemical treatment step is the same as the carbonization step. More preferably, the heating furnace is a double structure indirect heating furnace composed of a closed carbide decarburization-whitening chamber and a heating chamber. Although electric heating of the heating chamber is also feasible, it is best from the economic point of view to use kerosene or heavy oil for combustion. The hot air obtained by recovering the above-mentioned volatile gas from the mud and burning it can also be used. In addition, the combustion gas discharged from other existing incineration equipment such as an incinerator can also be used. The type of incineration equipment can be exemplified by the furnace type (such as the type of stoker furnace), the floating type, the material stirring type, and the hot air combustion type. 'In addition, a rotary kiln installed in each papermaking plant or an existing incinerator (cyclonic furnace or mobile incinerator) can be used as a part of the wastewater treatment device', and it is even better to use a Rotary kiln for decarbonization and albino treatment. In addition, during the carbonization treatment and decarburization-whitening treatment, once the object to be treated is cooled to a temperature of 400 ° C or lower, and then the subsequent treatment is performed, the carbide can be completely removed due to the carbonization treatment. Combustible gas from thermal decomposition of organic matter. In addition, when the carbide is brought into contact with water and / or water vapor for cooling during this period, the specific surface area of the carbide can be increased, and the reaction efficiency between the treated product and oxygen in the decarburization-whitening treatment step can be effectively increased. Decarbonization-whitening treatment. In the case of continuous carbonization and decarbonization-whitening, when a screw or a stirring blade is installed in the heat treatment chamber, sludge or carbide can be forcibly transferred by this. When forcibly squeezed in with a screw, stirring can be promoted to improve the efficiency of concrete treatment.

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527455 Description of the invention (16): When rotating the polygonal carbonization chamber, you can also use this to transfer mud or carbon (grinding step) m Guanfang, white inorganic particle crushing step 5 4 will be described. Particle size for papermaking. The most suitable / colored inorganic particles can be adjusted to suit their suitability. Taking suitable granules depends on the method of use, but it is slightly more private such as 〇 · 1 // m ~ 1 〇 // m, such as _ 山 卜 V 、 习 嫱Private Worker > Recognition / f ^ Granule of Earth. Decarburization-whitening helmet ί;:; Conveyed to a dry grinder for pulverization. The powder after one ^ i is transferred to the dispersion. The pulverizer, or the dispersant of the slurry, is subjected to secondary pulverization, and the pulverizer is a pulverizer, so that the powder is a pulverization method, which only benefits white inorganic particles). The crushing of the crusher is feasible. The crushing of the C-type tertiary crusher or the wet powder crusher and the wet crusher are only suitable. * As mentioned above, the dry type or only one side is provided with a plurality of # and σ. It is possible that the average particle size of the inorganic particles that can be made into a suitable value for papermaking after each of the pulverizers is most preferably that the pulverization is performed in a wet powder type, and the pulverization efficiency is small. At this time, the warfare belongs to the following: the dry powder pulverization in advance makes the treatment pair 3 5 // m, the powder in the dispersing machine 1 ~ ^^ after the powder particle size after pulverization t exceeds the simultaneous deterioration of the crushing efficiency, the The state will worsen, making the whiteness of the pulverizer-colored inorganic particles ^ low-knife or pulverizer abrasion, and making the white kiln less than 22 会; when dry dry pulverization, if powder is not suitable. People's crushing efficiency, and under the economic f stack combination, borrow dry powder

C. \ 2D-CODE \ 90-11 \ 9〇117420.ptd $ 21 pages. So 'in the dry grinder and V. Description of the invention (17) Crushing and crushing to achieve a granular 10, better, and two powders = r: 35 form is the solid content (such as 5 :::: specified solid-edge prevention by the disperser or soup powder) of the aqueous slurry, which can be used to reduce the '-edge with good efficiency powder : Consumption: Caused by the whiteness, the average particle size of the white inorganic particles can reach this date, and it can be pulverized by wet pulverization. If its pulverization process; ~ 10 _ square grinding of the surface of the newspaper occurs during processing, = two, demand, it will cause serious problems during papermaking. The reason is that when the blade of the abrasive cutting machine is adjusted to 0 · 1 " m ~ 10 cores, the average particle size of the white inorganic particles can be worn. 9 texts. White inorganic granules for papermaking The following is a description of a dry pulverizer, a pulverizer that pulverizes to several tens of mills. It is available from the number of mills, knife mills, rod mills, etc.彳 No roll crusher, roll mill, wheel size below // m, in order to realize the jet mill, dry ball mill suitable for papermaking raw materials :: crusher, roll mill, spray dry crushing can be used The material of the machine is 5 grinder and so on. Press again, and so on. Secondly, the “wet grinder” ::: has been considered for abrasion. Machine, mixing tank type mill, wet ball mill, vibrating mill), etc., to implement, worm, g-type mill, ⑶BALL-MILL (white caused by ultrafine powder wear, benefit " & In addition, in order to prevent the crusher from being rescued by the crusher; broken = sub = pollution (reduction in whiteness), preferably abrasive plastic, etc. mentioned = flat = coated with abrasion-resistant materials such as In terms of the outer surface of rubber and durable parts, the crushing area refers to the surface of the crushing chamber and the stirring structure, and the powder in the slurry (slurry) during crushing C: \ 2D-OODE \ 90-ll \ 90117420.ptd Page 22 527455 V. Description of the invention (18) Contact area. When the crushing chamber is provided with partitions and other components, these components also become part of the crushing area. For the case of wet grinders that crush media limbs, it is best to use abrasive balls covered with abrasion-resistant plastic or ceramic balls, and these balls also become one of the crushing areas. Plastics, such as urethane resin or nylon resin, can be exemplified by a thickness of about 1 mm to 1 〇_ The coating can be applied, and it can be appropriately selected according to the frequency of use or the pulverizing conditions. Press again, and you can also use a screening device (such as an open-type vibrating screen, multi-tubular vibration vibrating filter) before and after wet pulverization; (Pressure filter, etc.) to remove sintered materials that are difficult to crush. Furthermore, it is preferable that the dispersing machine be coated with rubber, wear-resistant plastic, etc. in the same manner as the wet red knife crusher. In the case of wet pulverization, under the purpose of uniform powder dispersion, a dispersant is added to perform slurrying. When a dispersant is added, it can prevent the viscosity from increasing, even when the slurry is highly concentrated. It is also the same when changing, in addition, it can prevent the viscosity increase caused by wet pulverization, and improve the pulverization efficiency or use =. At this time, in order to make the dispersant of polyacrylic acid containing sulfonic acid group have better than other dispersants The salt resistance and heat resistance are its advantages. It is best to add a polyacrylic acid containing an acid group (its molecular weight including the sulfonic acid group is 1 0 0 0 to 1 0 0 0 0) 0 05% to as a dispersant. When the added amount exceeds 3%, even if the added amount is increased, its dispersibility will not be changed. If the added amount is less than 0.05%, it will show poor dispersibility, and there is no way to perform it with good efficiency. Wet pulverization in step. The one shown in step 55 is white inorganic particles whose particle size is adjusted after pulverization treatment (due to this treatment), which may be reused as a pigment or filler suitable for papermaking.

C: \ 2D ^ DE \ 9〇.li \ 9〇i17420.ptd 527455 V. Description of the invention (19) When H = diluted white inorganic particle suspension, if the suspension is not alkaline with pH greater than 13,丨 畀 t 13. The reason for this adjustment is to adjust the pH to 8 ~ 1 with an acid, so that when the pH of the suspension is high, the effect of the dispersant is reduced, and the pulverizability is reduced. This means that it contains especially ^^ times of reduced mobility. Press again, the organic granules of the aqueous media :: The suspension should make the yield of 22 white ... In white inorganic Π: J high white inorganic particles

In this way, it is possible to achieve the IS effect to prevent the dots from rising; adjust the pH before processing; otherwise, adjust the average particle diameter of the pH-adjusted particles of the white inorganic particle suspension ’to effectively adjust the white color. In addition, at the following time, when pH can be achieved, the pH treatment of carbon dioxide and particles is dispersed and pulverized. After adjusting the pH, it contains the right and wrong. At the same time, the dispersion treatment and crushing, storage, and rotation are performed at the same time. #: The suspension of machine particles can be wet and pressed. At the time of conversion, it can be regarded as having entered = 2 = 7 to make the white inorganic particle slurry segment. The use of white inorganic particles as pigments or fillers Of course, white children m ^ can not be dry pulverized or wet type 2 ::::: ;; white inorganic particles are broad, water-based :: color; 2 ::: = There are many raw materials. At the time of this dilution, the color ...

It is 8 to 13. It is also better in this case. "V is used to adjust the pH and pH of the suspension, and carbon monoxide is used to adjust the suspension C: \ 2D-O0DE \ 90 · 1] \ 90117420.ptd Page 24 527455 5. Description of the invention (20) The pH of the floating liquid is 8-13. When introducing and separating white inorganic particles. This allows simultaneous decentralization and " adjustment. An example of the heat treatment apparatus used in the method of the present invention is described in detail below with reference to FIG. 2. FIG. 2 is a schematic system diagram of an example of a heat treatment device that performs the carbonization step and the decarburization-whitening treatment step of the present invention. The indirect heating furnace of the loach is put in the mud input port 2 and dried in the mud drying chamber 3 ° In order to heat the mud drying chamber, a hot air inlet 4a is provided, and the exhaust of hot air, water vapor, and dry distillation gas is provided. Exit 5a. Further, a minute opening (not shown) is provided near the discharge port 5a at the rear half of the mud drying chamber 3 'so as to discharge water vapor or the like generated from the mud to the discharge port. The carbonization step is performed by using the first-indirect heating furnace and the second indirect heating furnace 6. The decarburization-whitening treatment step is performed using a third indirect heating furnace 10. The first indirect heating furnace 1 is a drying zone belonging to the carbonization step, and the second indirect heating furnace 6 is a thermal decomposition zone belonging to the carbonization step. One of the sludge thermal decomposition and carbonization chambers 7 of the second indirect heating furnace 6 is provided with a hot air inlet (used to heat the heating chamber for the purpose of drying the carbonization of the sludge). The inlet 4 b is provided, and the other side is provided with hot air, The outlet 5b of water vapor and dry distillation gas. Also, there is a small opening (not shown) near the discharge port 5b. The mud heat is decomposed and the second half of the stone reaction chamber 7 is' in order to discharge the dry distillation gas and the like generated from the mud. Exhaust. When the carbonization is completed, the carbide is discharged from the carbide discharge port 8. The carbide discharged from the carbide discharge port 8 is sent to the third indirect heating furnace 10 through the carbide transfer flow path 9 to apply a decarburization-whitening treatment. In the

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52 ^ 455 5. Description of the invention (22) The gas also burns and can be used for drying and trituration of sludge. When the temperature of the carbonization chamber 7 is set to 400 ° C ~ 100 ° C (with ^, the heat source is preferably C), the white helmet C ~ 700 contained in the silt can be avoided by this. At the temperature of thermal denaturation, it promotes the thermal decomposition of organic matter. The unequal temperature of the child can be adjusted by the hot air generating device. Regarding this, it is acknowledged that *, ,, wind choices ~ miles, and emissions. In the case of continuous carbonization and desalting-whitening, when there is a screw or agitating blades in Relu, it can be used to forcibly transfer the silt, and π V) ^ ^ ^ 、 / The machine for mud is set as the opening for the most dagger < so that the air will not be taken into the carbonization chamber. When forced in by the stirring blades, it is possible to limit the Z-direction required. Furthermore, the use of spirals to promote the sludge mixing, ^ ^ rate. Improved thermal efficiency The post-chemical time can be adjusted by a method that uses the amount of combustible gas produced by the decomposition of a gas detection device. The next time is determined by the heat. The rotation speed can be adjusted to the residence time of the mud. Figure 2-An example of the carbonization step in the snail section, but it is also possible to use the second-order principle. It is also possible to use a two-axis screw in order to carbonize it at the same time. Although the carbon derived from organic matter is difficult to distinguish from carbonic acid, it is better to keep the carbon derived from calcium carbonate by fixing carbonization and carbon dioxide derived from calcium carbonate. ) Another way to implement the carbonization section, and 彳 With reference to Figure 2, the decarbonization-whitening process steps will be described. The carbide delivered through 迗 k 路 9 was put in from the No. 11 port set in the third indirect heating furnace. At this time, the air required for the carbonization of the carbide can be removed from the air

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527455 V. Description of the invention (24) t example is a use example. Carburize the carbon in the rotary kiln's carbon treatment chamber 18. Combustion is performed by the carbonization step, and once the carbide is sprayed for the purpose of adding carbonized water to the pressurized water. It is possible to achieve a more uniform body nozzle. Second, about the description. Internal combustion-type rotary kiln 15 for decarbonization-whitening Once stored in the carbide, one of the compounds is placed in the port 16 and then burned from the inside 19, and & & The kiln is equipped with decarbonization and whitening The finished compounds obtained from U and white inorganic particles were not directly transferred: 2 ;. It is stored in the storage 16 and the anti-whitening cold part, so that the flammable gas is completely evaporated, and the specific surface area of the material can also be removed. In addition, Harley-Davidson's use of spray water is sprayed using a spray nozzle. Will use a spray of water and pressurized air at the same time to adjust the size of the water particles below the loop, and: = spray treatment. In the decarburization-whitening treatment step, the spin-fumbling step can be used to add the carbide inlet 15 of the internal combustion rotary kiln J 7 and the slag to be placed in the white inorganic particle recovery port 20 The nearby burner 19 gives life and heat. When the heating temperature is within the range of 450 t ~ 100 0 t, the whiteness can be effectively improved. At this time, the vehicle is adjusted in such a way that the carbide is not heated sharply so as to adjust the temperature of the furnace. °

It is desirable that the inner wall shape of the decarburization-whitening treatment 18 can be formed into a polygonal shape, so that in addition to the continuous transfer of carbides, the carbides can be stirred, and the decarburization and whitening treatment can be effectively performed. Adjusting the number of revolutions and the inclination of the rotary kiln 15 can be used for the decarburization-whitening treatment time. Based on this processing time, suitable for manufacturing

527455 V. Description of the invention (25) White inorganic particles of papermaking raw materials. Finally, the whiteness of the white inorganic particles can be adjusted to 70% or more, preferably 80% or more. Also, it is preferable that the combustion gas exhausted from the internal combustion-type rotary vane 15 can be treated by an exhaust gas treatment device (not shown). Although the carbide reservoir 16 is used in FIG. 3, it is also feasible to use a carbide transfer flow path 9 to directly connect the rotary kiln between the carbonization treatment step heating furnace and the decarburization-whitening treatment step. In addition, in FIG. 2, it is also possible to use a carbide reservoir 16 instead of the carbide transfer flow path 9. ^ In addition to the internal combustion type rotary kiln used in Figure 3, existing incinerators (cyclone furnaces or fluid bed incinerators) can also be used, which are installed in each paper mill as part of a drainage treatment plant. It is also possible to use an indirect heating type rotary kiln. For hot air, it is possible to use combustion gases exhausted from existing incineration equipment such as incinerators. It is particularly preferable to use a heat-insulating material in the finishing treatment device and the decarburization-whitening device, and apply a coating to the surroundings to keep these devices warm. Furthermore, ceramics or alloys can be selected as the material of these devices, taking into consideration the processing temperature or economy. The material obtained by treating the papermaking sludge in this way is white in appearance. In particular, it has the characteristics of a recyclable processing method and the characteristics of the materials obtained through the processing. The material obtained by treating papermaking sludge and the like in this way can be reused as calcium carbonate or kaolin for use as a tempering material for a pulp suspension in a papermaking process such as high-quality paper. Furthermore, if this material is added to an aqueous solution of colored turbid water or tea, it will adsorb pigments and make the color of the aqueous solution lighter, and it will adsorb cigarette smoke. Therefore, it is confirmed that the material is a porous active substance. Due to the residual porosity, it can also be

C: \ 2D-C0DE \ 90-ll \ 90117420.ptd Page 30 527455 V. Description of the invention (26) [Li / Er Γ Active bacteria on sludge treatment, bacterial culture carrier, etc. The examples are described below to further illustrate the present invention. The invention is not limited by these examples, because it is substantially the same as the present invention in terms of purpose, cost, and fruit. * In this example, (Example 1) may be used. For the sludge composed of solids separated by a deinking pulp (used as a raw material for foreign paper), the dewatering treatment is applied in such a way that the dehydration = solids can reach about 50%. The sludge treatment is performed under the use of a kiln type indirect heating slab ("Adva'tec Toyo", a product of the company). It will be borrowed around a small kiln made of quartz that will rotate at a speed of ^ clock? The electric heating wire indirectly heats it, and blocks the sample input port of the kiln to prevent air from flowing in. The water vapor and carbonized gas are discharged from the open port of the other side. Regarding the carbonization temperature, the temperature of the atmosphere in the kiln reaches 4 in the first 30 minutes. 0 0. (The heating is performed at a rate of 3. After the mud is dried, the above-mentioned rotary kiln is used to perform thermal decomposition and carbonization. The heating is performed at a speed of 60 π in 30 minutes. Second, 'use this small Kiln, heating to 600 C in 60 minutes' time, supplying air at a rate of 50Occ per minute into a lonely chamber serving as a decarburization-whitening chamber to perform decarburization-whitening treatment of the obtained carbide, and recovering the sample ( The test products are the same below.) (Example 2) In Example 2, the same procedure as in Example 1 was performed except that the highest temperature reached in the decarburization-whitening treatment step was set to 80 ° C. deal with In

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527455

527455

C: \ 2D-C0DE \ 90 · 11 \ 90117420.ptd Page 33 527455 V. Description of the invention (29) Table 1 Carbonization temperature (° C) Water vapor spray decarburization temperature (° C) X-ray of kaolin / calcium carbonate Whiteness (%) of diffractive white inorganic particles Whiteness (%) of coated paper Example 1 400-600 No 600 100/2500 72 74 Example 2 // // 500-800 No / No 86 82 Example 3 // Yes 600 100/2500 75 78 Example 4 // None 580-700 None / 1300 85 82 Comparative Example 1 None ^ None 800-800 None / 500 72 74 Comparative Example 2 400-600 // 1200 None / None 74 Uncomparable Comparative Example 3 None No incinerator None / No 54 64 Comparative Example 4 Existing product: "hy (irocurve -90" (dry heavy calcium carbonate) 96 86 Existing product: HT (grade 2 kaolin) 78 79 In the X-ray diffraction (picture) of the sample obtained in Example 1, the sharp peak of carbonic acid is clearly shown, and the white inorganic particles in the sludge have little change due to the decarbonization-whitening treatment. In addition, the whiteness of the sample It is a high value of 72%, so it is suitable for being used as a raw material for papermaking, that is, the effect of the carbonization treatment ~ decarburization-whitening treatment step is confirmed. In the X-ray diffraction (picture) of the sample obtained in Example 2, no spike of kaolin or carbonic acid # 5 was observed, but the whiteness of the sample was as high as 86%, that is, it was confirmed that the sample was at 80 ° C. The effect of the decarburization-whitening treatment was performed. The X-ray diffraction results of the sample obtained in Example 3 were approximately equal to the measured values of the particles of Example 1. In addition, the whiteness of the recovered sample was 75%, which was higher than Example 1 is suitable for being used as a raw material for papermaking.

C: \ 2D-CODE \ 90-ll \ 90117420.ptd page 34 527455 V. Description of the invention (30) It is concluded that the specific surface area of carbides is increased due to the spraying treatment of water on the carbides, resulting in carbides Effectively in contact with oxygen, it is decarburized and whitened. That is, the spray effect of water was confirmed. In the X-ray diffraction (picture) of the sample obtained in Example 4, the peak of calcium carbonate is clearly displayed, and the whiteness of the recovered sample is 85%, which is equivalent to that in Example 2, so it is suitable for use as Papermaking raw materials. In the whitening treatment step, a method of performing two-stage sintering at a temperature of 7000t after full decarburization at a temperature below 600 ° C and an adjustment of air flow can be used to prevent stone reflection. Decomposition of I bow and thermal degradation of white inorganic particles

In the X-ray diffraction (picture) of the sample obtained in Comparative Example 1, the peaks of kaolin and calcium carbonate were not clearly shown, and the whiteness of the sample was 7 2 g / g. Although the sludge was heat-treated at a temperature of 800 ° C, which is higher than that of Example 1, the obtained whiteness was equal to that of Example 1. The decarburization-whitening efficiency is lowered: The reason can be inferred that the white inorganic particles contained in the sludge were caused to melt and sinter on papermaking due to the sharp thermal treatment of the sludge without the carbonization step. σ In the X-ray diffraction (picture) of the sample obtained in Comparative Example 2, there were no spikes of kaolin and calcium carbonate. The whiteness of the recovered sample was 74%. Due to the rapid heat treatment in the decarburization-whitening treatment, the melting and sintering of the white non-particles contained in the sludge occurred, resulting in a reduction in the whiteness improvement rate. In the x-ray diffraction (picture) of the sample obtained in Comparative Example 3, there were no peaks of high and calcium carbonate. The whiteness of the incineration ash is 54%, which is very low, which is for the papermaking raw materials. ^

527455 V. Description of the invention (31) (manufactured coated paper and measurement of whiteness) The samples are made to serve as raw rice hoppers for papermaking, and they are coated with sweat. Water was added to each sample, and after the solid concentration was 60% (A6028 / East Asia " company name), the white inorganic particle-based solid content could be added to 0_5%, and then dispersed using a disperser: Prepare a slurry. Also, in the case where no dispersant is used at all, the organic particles are unevenly dispersed. The above-mentioned (dispersed & slurry ^ using a sand mill (" ΑΙΜΕχ ") and wet pulverized) until the diameter reached 2 · 0 # m. The average particle size is determined by _ Jula (5100 / " · +. ”Sedlgraph particle size distribution, J 疋 clothing set (5100 / micromerlc)), again, about the sample obtained in Example 2, 60% Water was added in a manner to make a solid body & j solids reachability. Make this slurry in the second layer: good dispersion cracking, even in the dispersant rate two is in addition to the 'obtained in Example 2 The test concentration can reach 15% in a way that has not been added to water = prepare a solid object with PH13 showing alkalinity. This slurry is filled with 3 as a polymer of powder. This is 11 to make the pH adjusted slurry Dehydration \ = tritium carbon to adjust 讪 60%. Δ weekly solids concentration for this polymer is also due to the addition rate of the dispersant by the completion of the dioxide (according to solid male I & a Thorium dioxide treatment reduced the amount of 8 μ · / g and was able to fully disperse. The addition rate of the knife agent caused economic:-11-C: \ 2D-CODE \ 9 (M 1 \ 9〇117420 · ptd 36th

527455

V. Description of Invention (32) Add 2 parts of starch (" ace a " trade name of "cornstarch") to each of the obtained slurry containing the sample, and alkali thickened type butadiene copolymer latex (JSR-0 6 9 3 / & quot JSR, the company's quotient. Octocene ~ to get coatings. Σ 7 wounds, the resulting coatings can be i〇g / m2 in the form of a single-sided dry solid content coated by a bench-top bar coater at 48. 5g / m2 of double-sided base paper can be obtained from cold-layer paper. The whiteness of this double-coated paper is based on the use of a spectro white 1 to a colorimeter (" SUGA testing machine "company product) according to JIS p knife 8 1 234 test = tester. The whiteness of each coated paper is shown in Table 1. "义

The whiteness of each paper sample coated with the white inorganic particles obtained in Examples 1 to 4 was 74%, 82%, 78%, and 82%, which was a sufficiently high whiteness. Therefore, it was confirmed that all of the materials were suitable for papermaking. . The whiteness of the paper coated with the sample obtained in Comparative Example 1 was 7 &%. Although the mud was heat-treated at a temperature higher than that of Example 1, the obtained whiteness was equal to that of Example 1. The reason for its decarburization-decreased whitening efficiency 'As mentioned elsewhere, it can be inferred that the white inorganic particles contained in the mud caused unsuitable melting on papermaking due to the sharp heat treatment of the mud without going through the carbonization step. Caused by sintering.

The sample obtained in Comparative Example 2 was wet-pulverized in the same way as a sand mill (a, MEX), but the sintered particles could not be crushed, so it could not be used as a raw material for papermaking. The whiteness of the obtained sample paper was 64%, which means that it is difficult to use as a coated paper.

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V. Description of the invention (33) (Comparative Example 4) In Comparative Example 4, the comparison is made between white inorganic particles regenerated from mud and pigments sold on the market. For commercial pigments of heavy calcium carbonate η ("1 ^ (11 * 〇 (: 111 ^ 6-9 0 丨 丨 / 丨 丨 Beibei flour powder 丨 丨 Company name) and Grade 2 ancient ~ soil (HT / " ENGELHARD " company's trade name) is prepared by adding 0.5% of dispersant ^ ridge amount of pH adjuster (sodium hydroxide) to disperse in water-^ and conformable content (solid content) 60% Add 2 parts of this pigment paste (" ace AV1 'Prince Cornstarch "trade name) to thicken styrene-butadiene copolymer latex ㈠SR-〇6 93 Factory Of jSRn

(Trade name) 7 parts to obtain a coating. Coated paper was obtained by performing hand coating in the same manner as in the examples. The whiteness of the coated paper obtained from the samples obtained in the examples shown in Table 1 is the same as the whiteness of this commercially available pigment. (Example 5) ^ From the above papermaking plant (paper sludge), it was dried in a hot air oven with water at 550 ° C, and then at 550 ° C ~ Second, it was heat-treated in an oxygen-rich state for 120 minutes. So add a small amount of this material to the tea. The result of this treatment is added to the material with pigments and so on to make the aqueous solution confirm that the material has more

The papermaking sludge (water content) discharged from different papermaking steps is about 65% and the apparent specific gravity is 0.85. Let it-human 'slowly raise the temperature by using an oxygen-depleted heating furnace. "Carbonization treatment was performed at a temperature of 600 ° C for 30 minutes. The material is calcined at a temperature of 5 50 ° C to 600 ° C to a material having a white granular shape. When it is stirred, the brown color becomes lighter. The material is white in appearance. When colored turbid water or an aqueous solution such as tea is used, the color of $ becomes lighter, and cigarette smoke is adsorbed because of the porous active substance of il.

527455

(Exemplary Embodiment 6) (Explanation of the device) Regarding the flammability and soil of Example 6, 21 is the raw material funnel, 22 is the machine set I $ ^ will be described below with reference to FIG. 4. Daiche) device. 23 is used; cut the material in the lower part of the cut raw material funnel (raw material device, A is the drying of the raw material;) cut and transported to the body of the drying device, 25 is the heat placed on the dry place ^ 卞 clothing set in A ' 24 is the furnace conveying device in the furnace. 30a, $ H clothes set, 26 is the thermometer used in the above two steps. B is Γ: It is based on the internal temperature measurement of the oven body. In the carbonization device B , 27 = transport device in the carbonization furnace in the middle and lower part of the clothes set, 29 is the pair of bee stings = Lu Zhuangben, 28 is the upper and lower three links _ is the furnace body of the carbonization device ^ hot air generating device for the clothes set Thermometer for measuring carbonization. M is a conveying device. C and D are raw materials that are transported to the calcining device D in phase C. 32 is a calcining device with a screening structure of raw materials. In the calcining device Horizontal multi-row cannons in the body ^ ',,, 3 are the furnace body, 34 is a hot air product provided in the furnace to split hot air supply: Π,: Λ5, 36 are used to fire the screw mechanism 34a, * Operated by the furnace body, the night is set as a material holding plate 34b continued from a plurality of rows, and the cylindrical shape of the spiral row M, 38 It is composed of the upper chamber and the lower shaft drive device / 34c of the general burning device. The thermometer. 39 is discharged from the sintering device :: J: two: fixed use. 40 is used to line the cooling device. Place and cool Pei. 42 and 43 are the oxygen concentration in the calcining device to the storage tank. 44 is the pair of conveying waste gas of the calcining device: used for the wind transport device.

527455 V. Description of the invention (35) ---- & The bucket in the transporting device 23 1 The p of life ...... The shoulder shoulders you. 45a is a water-based tube produced by the drying device A produced by the transport device. Reference numeral 45b is a V-member for introducing a deodorizing device 47 containing waste milk, dry milk, and milk. 46 is a duct for n ^ Liu Yizhi V to use the waste #i + m 入 ^^ After drying the raw materials introduced by Youyun clothing set 23, 妯 xi drum corpse wind is near 49. 48 is a deodorizing place through a deodorizing device. 50 Α 麻 " Water tube cooling device. 49 is a waste (a letter for the release of raw materials to the atmosphere. Loach: ΐ 二 中 'Α 用 —It is a deinking sludge that is different from the above-mentioned papermaking sludge. Its moisture content is about 50%, depending on the specific gravity.) n sR (supply of raw materials) The apparent specific gravity is 0.85. :: The deinked mud stored in the raw material funnel is removed from the knife by a certain amount. The raw materials cut out are transported by 22, 〇 ^ # 50kg / hr ^ ^ ^ ^ (Drying and carbonization of raw materials) The raw materials that have been put into the drying device are transported horizontally by the furnace. In the drying | Set eight \ 本 # body, the burning high-temperature gas supplied along the body of the furnace to apply one ... 1 and 1 produce evaporation of the moisture contained in the clothes. During this period, the existence of ^, S, ^ is heated so that the raw materials such as air are replaced by the generated water vapor, and the oxygen-containing gas in the clothes is transported 0 · 1 Oxygen-depleted state below%. The above-mentioned drying process forms an oxygen concentration into the body of the carbonization device. The raw material after carbonization is treated with continuous high-temperature gas supplied by 29, and the two sides are at The raw materials that are dried on one side of the hot air generating device are supplied by the conveying device, and the inside of the device moves horizontally. Moving iron sheet indirectly heats, and

C: \ 2D-CODE \ 90-ll \ 90117420.ptd Page 40 527455 V. Description of the invention (36) Make the temperature of the atmosphere in the furnace reach 60 ° C. (:. During this period, oxygen-containing gas such as air is completely replaced by the carbonized gas produced by the carbonization device, and a reducing atmosphere in an oxygen-depleted state with an oxygen concentration lower than 0.1% is formed, thereby promoting the carbonization of organic matter. In this example, for the continuous treatment of deinking papermaking sludge, the residence time of the sludge in the carbonization device furnace was set to 30 minutes. Among the carbides produced, the ratio of fixed carbon derived from organic matter was averaged. The value is W weight ratio). The discharge amount of the raw materials (carbides) discharged from the carbonization device is 49 kg / hr due to the drying and carbonization treatment. (Carbide whitening treatment) The carbide discharged from the carbonization chamber B is put into a calcination by a conveying device, and C is placed. The oxygen concentration of the imported combustion gas may be adjusted to 3% to 15% according to the air addition method of the Dafeng 1 machine (fan). In this embodiment, the furnace of the firing device c is used. The concentration of oxygen in households is set at 12%. The temperature in the furnace of the general firing device C is available: The temperature is set to 65 (rc) in the embodiment. The spiral mechanism of the conveying device is used to move the general object at the level of the atmosphere +. The decarburization reaction using oxygen. The retention time of the carbides in the calcining device "Lunei" is set to 80 minutes. The discharge from the calcining device c is continuously charged into the firing device D provided at the lower portion of the device; The satin-burning device C is set as follows] The temperature in the furnace of D is set to 75 Gt. The residence time of the object to be burned in the gun is set to 40 minutes. The firing device ㈣ ^ clothing set ^ discharge volume due to The calcination treatment is performed to obtain 40 kg / hr. Of the raw materials (treatment result) 527455

::, According to the conditions described, the operation of this equipment was used to obtain an inorganic substance with calcium carbonate as the main component of 85% color. After the bow was evaluated, the result was that the ratio of the heat treatment at the side of the mouth before the treatment to the decomposition into the oxide mother was Wei Guang. Objects: No.2: pH of water (mixed) turbid liquid obtained by mixing white inorganic matter with water: An white inorganic matter: water = 6 〇: 40 in a mixed state (slurry)

: Traces of liquid deterioration in viscosity. When & the white inorganic slurry is transported in the papermaking step and transported, there is no need to carry out the transformation of existing facilities. In addition, it has been confirmed that the white inorganic surface coating material can be used as a substitute material for calcium carbonate currently used. The results of this treatment are comprehensively shown in Table 2. Carbonization device of the project drying device Burning device (upper section) Burning device ~ — (lower section) Furnace temperature 450 ° C __600 ° C 650 ° C --- V J__ 750 ° C ' The residence time in the furnace is 20 minutes ___ minutes 8 minutes 40 minutes. The oxygen concentration is less than 0.1. 1 Device container) 12% (in the furnace) 12% — (in the furnace) Properties of the components after treatment Moisture content: 0.1 % Fixed carbon: Average 8% Inorganic matter: Average 90% I \ J Whiteness: Plain CaC03 Decomposition rate: Average 40% pH of water turbid liquid: 12 [Effect of the invention]

V. Description of the invention (38) — Carbonization and decarbonization of white matter. That is, the spoon contains organic matter that belongs to waste / The following two steps are characteristic: the mixture of two organic particles is limited to the oxygen-depleted condition of the presence of oxygen-containing gas (the range is 450 ° c ~ 70 0 ° C compared with households) A, 1 0 0 0 C or lower temperature range, the carbonized soil obtained from the carbonization treatment = the step of carbonization treatment; second ° c ~ 100 (the oxidation in the TC temperature range can make the carbon, 45 Decarbonization below 〇 to achieve white inorganic particles: the existence of turbulent body 8000 / "L Tu Yi, and his ancestors have a whiteness of more than 70% (the" more magical decarburization-whitening treatment step "骒. According to this method, white inorganic particles with excellent abrasion resistance and stable product f can be recovered. = Outer 'in the carbonization process', for example, ^ knife evaporation' is performed at a temperature of 40 0. rc ~ 100 (rc < qnwttM, = stable carbonization can be achieved when the heating belt is passed through two or more stages. In decarburization and whitening treatment, 700 t ~ 800 is the preferred temperature range. After 45 (TC ~ 6 0 0 Ό and 60 〇 it ~ 10000 two or more stages, when heating the zone, This achieves a more stable treatment and further improves the whiteness. When the temperature of the decarburization-whitening treatment is adjusted to below 800 ° C according to the supply amount of oxygen-containing gas, it can be recycled to have more excellent abrasion In addition, when the kaolinite is contained in the waste before the treatment, the kaolinite can be made amorphous and the calcined kaolin soil can be modified to improve the whiteness. Furthermore, the present invention can improve the whiteness. The method of recovering the white inorganic particles is that when the carbide is cooled after the carbonization treatment, it is possible to perform a more sufficient decarburization by this, and

C: \ 2D-O0DE \ 9CMl \ 90117420.ptd Page 43 527455 V. Description of the invention (39) When increasing the specific surface area of the carbide, it is possible to use this method to perform the decarbonization of the later stage under better conditions and with good efficiency. -Albino processor. In addition, the aqueous suspension liquid obtained by diluting the white organic particles with an aqueous medium is best to adjust its pH to 8 ~ 13 when using carbon dioxide ^. This can be used to stabilize and use the recovered white organic particles. It can also effectively adjust the particle size of the white inorganic particles. In addition, when using the method of the present invention to treat papermaking sludge, the organic component is carbonized and the structure of the inorganic component is maintained intact, so it is possible to reuse it in the papermaking step? It may also be used in areas where the properties of porosity are available. [Explanation of the element number] 1 The first indirect heating furnace (drying zone of the carbonization step) 2 Put in the mud D 3 Sludge drying chamber 4a Hot air enters Π 4b Hot air enters Π 4c Hot air entering Π 5a Hot air steam and dry distillation gas π 5b Hot air steam and dry distillation gas V 5c Hot air discharge D 6 Second indirect heating furnace (carbonization zone by heat decomposition of carbonization step) 7 Sludge Thermal decomposition and carbonization chamber 8 Carbide discharge Π 9 Carbide transfer flow path ill s

m 11 11 · C: \ 2D-CODE \ 90-ll \ 90117420.ptd Page 44 527455 V. Description of the invention (40) 10 Third indirect heating furnace (decarbonization-whitening belt) 11 Carbide inlet 12 Air entering Port 13 Decarburization-whitening chamber 14 White inorganic particle recovery α 15 Internal combustion rotary kiln (decarbonization-whitening belt) 16 Carbide reservoir 17 Carbide input port 18 Carbide oxidation chamber 19 Burner 20 White inorganic particle recovery port 21 Raw material hopper 22 Cutting device 23 Conveying device 24 Furnace body 25 Hot air supply device 26 Furnace conveying device 27 Furnace body 28 Furnace conveying device 29 Hot air generating device 30b Thermometer 31 Raw material conveying device 32 Raw material screening device 33 Furnace body «

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Fifth, > Description of the invention (41) 34 Burning material conveying device 35 '36 Air supply generating device 37, 38 Thermometer 39 Raw material conveying device and cooling device 40 Raw material conveying% \ / reaching device 41 storage tank 42, 43 air supply device 44 duct 45 a, 45b Conduit 46 Conduit 4 7 Deodorizing device 48 Water-cooled multi-tube cooling device 49 Extraction fan (abandoned extraction fan) 50 Chimney C: \ 2D-CODE \ 90-ll \ 90117420.ptd Page 46 527455 Figure 46 Brief Description of Formulas FIG. 1 is a flowchart of a method for recovering white inorganic particles according to the present invention. Fig. 2 is a schematic system diagram of an example of a heat treatment apparatus for performing the carbonization step and the decarburization-whitening treatment step of the present invention. Fig. 3 is a schematic system diagram of another example of a heat treatment apparatus for performing the carbonization step and the decarburization-whitening treatment step of the present invention. FIG. 4 shows an example of an apparatus applied to Embodiment 6 of the present invention.

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Claims (1)

527455, case number 90117420, amended dlo 10.2 8 if · original 1. A treatment method, which is a method for recovering white inorganic particles from papermaking sludge, which is characterized by: limiting the mixture containing organic matter and white inorganic particles In the presence of oxygen-containing gas in an oxygen-depleted condition, the steps of applying carbonization treatment at a temperature range of 450 to 700 ° C: and making the carbide obtained by the carbonization treatment in order to make the finished compound in the Decarbonization in the presence of an oxygen-containing gas controlled by oxidation in a temperature range of 450 ° C to 100 ° C, to achieve a whitening step in which the whiteness of the white inorganic particles is 70% or more. The treatment method according to item 1 of the scope of patent application, wherein the mixture containing organic matter and white inorganic particles is at a temperature of 4 5 0 ° C to 6 5 0 ° C under an oxygen-depleted condition that restricts the presence of oxygen-containing gas. After the carbonization treatment is applied, the calcination treatment is performed at a temperature of 450 ° C to 650 ° C. L As for the treatment method in the first or second scope of the patent application, the carbonization treatment is performed at the temperature of the second stage. L. Treatment method as described in item 1 or 2 of the scope of patent application. The treatment is heating by external heat. 1The treatment method according to item 1 or 2 of the scope of the patent application. The temperature of the second stage is the whitening treatment by decarburization. L. Treatment method as described in item 1 or 2 of the scope of patent application. The treatment is heating by external heat. : L_If the treatment method of item 1 or 2 of the scope of patent application is applied, the supply amount of oxygen gas will be adjusted to 80 ° C or less by decarburization and whitening temperature. Wherein press at least the carbonization where press at least the whitening 90117420.ptc, page 48, 527455 _Case No. 90117420_ year, month and year__ VI. Patent application scope L The processing method of item 1 or 2 of the patent scope, in which, during the carbonization treatment and the whitening treatment by decarbonization After the object to be processed is cooled to a temperature below 400 ° C, the subsequent processor is executed. L The treatment method as described in the scope of patent application, wherein the treatment object is cooled in contact with water and / or water vapor. 10. The treatment method according to item 1 or 2 of the scope of application for a patent, wherein the mixture containing organic matter and white inorganic particles is waste and / or low-grade old paper whose main body is papermaking sludge. —A kind of white inorganic particles obtained by using the processing method of the application item 1 or 2 of the patent scope, which is characterized by the fact that kaolinite is contained in the mixture containing organic matter and white inorganic particles, so that the kaolin in the white inorganic particles can be made. The method of amorphizing the stone controls the whitening process by decarburization. 11 ^ A method for using white inorganic particles, which is characterized in that: the white inorganic particles obtained by the processing method in the scope of claims 1 or 2 of the patent application are diluted with an aqueous medium to obtain an aqueous suspension, and carbon dioxide is used to adjust the aqueous The p Η of the suspension is 8 ~ 13. 90117420.ptc Page 49