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WO2000079052A1 - Procede de fabrication d'un produit composite durci et procede de traitement de boue - Google Patents

Procede de fabrication d'un produit composite durci et procede de traitement de boue Download PDF

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Publication number
WO2000079052A1
WO2000079052A1 PCT/JP2000/003953 JP0003953W WO0079052A1 WO 2000079052 A1 WO2000079052 A1 WO 2000079052A1 JP 0003953 W JP0003953 W JP 0003953W WO 0079052 A1 WO0079052 A1 WO 0079052A1
Authority
WO
WIPO (PCT)
Prior art keywords
sludge
papermaking sludge
raw material
papermaking
cured product
Prior art date
Application number
PCT/JP2000/003953
Other languages
English (en)
Japanese (ja)
Inventor
Yoshimi Matsuno
Kenji Sato
Tetsuji Ogawa
Toshihiro Nomura
Original Assignee
Ibiden Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP11171514A external-priority patent/JP2001003299A/ja
Priority claimed from JP11171512A external-priority patent/JP2001003294A/ja
Priority claimed from JP11171513A external-priority patent/JP2001001322A/ja
Application filed by Ibiden Co., Ltd. filed Critical Ibiden Co., Ltd.
Publication of WO2000079052A1 publication Critical patent/WO2000079052A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F13/00—Making discontinuous sheets of paper, pulpboard or cardboard, or of wet web, for fibreboard production
    • D21F13/04—Making discontinuous sheets of paper, pulpboard or cardboard, or of wet web, for fibreboard production on cylinder board machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J1/00—Fibreboard
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
    • C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry

Definitions

  • the present invention relates to a method for producing a composite cured product, and more particularly, to a method for producing a composite cured product that can be used as various industrial materials including building materials, and a method for treating paper sludge contained in sludge discharged from a paper mill. And a sludge treatment method for producing a composite cured product.
  • inorganic substances such as silica and alumina obtained by firing scum are mixed with cement, fiber and water, and the resulting mixture is pressed using a porous iron plate.
  • workability is poor because an iron plate and cement are used, and furthermore, productivity is reduced because cement requires curing.
  • Japanese Patent Application Laid-Open No. 10-218643 discloses a cement admixture containing waste molten slag.
  • This second prior art has excellent compressive strength but low flexural strength. Therefore, it is necessary to increase the bending strength in order to use this technology for columns and plates for building materials.
  • a first object of the present invention is to provide a method for producing a composite cured product that can be effectively used as various industrial materials.
  • a second object of the present invention is to provide a sludge treatment method capable of effectively utilizing papermaking sludge. Disclosure of the invention
  • a method for producing a composite cured product comprising an inorganic non-quality substance and an organic fibrous material.
  • the method includes a step of pressurizing a raw material containing papermaking sludge in a wet state.
  • a method for producing a composite cured product comprising an inorganic non-quality substance and an organic fibrous material.
  • the method includes a step of pressurizing and dewatering a raw material containing papermaking sludge while conveying the raw material.
  • a method for producing a composite cured product comprising an inorganic non-quality substance and an organic fibrous material.
  • the method includes a step of sucking and dewatering a raw material including papermaking sludge, and a step of pressurizing the sucked and dewatered raw material.
  • a method for treating sludge including papermaking sludge comprises the steps of separating and extracting paper sludge from sludge, and depressurizing and dewatering the separated and extracted paper sludge.
  • a system for producing a composite cured product composed of an inorganic non-quality substance and an organic fibrous material includes an apparatus for pressurizing a raw material including papermaking sludge in a wet state.
  • a system for producing a composite cured product composed of an inorganic non-quality substance and an organic fibrous material includes a device for transporting a raw material including papermaking sludge, and a device for pressurizing and dewatering the raw material being transported.
  • a system for producing a composite cured product comprising an inorganic non-quality substance and an organic fibrous material.
  • the system includes a device for sucking and dewatering a raw material including papermaking sludge, and a device for pressurizing the sucked and dewatered raw material.
  • a system for treating sludge there is provided.
  • the system includes a device for separating and extracting papermaking sludge contained in sludge, a device for conveying the separated and extracted papermaking sludge, and a device for pressurizing and dewatering papermaking sludge during conveyance of the papermaking sludge.
  • FIG. 1 is a schematic cross-sectional view of a composite cured product according to the present invention.
  • FIG. 2 is a schematic cross-sectional view of a composite cured product according to the present invention.
  • FIG. 3 is a schematic cross-sectional view of a composite building material using the composite cured product of the present invention.
  • FIG. 4 is an X-ray diffraction chart of the composite cured product according to one embodiment of the present invention.
  • FIG. 5 is an X-ray diffraction chart of the composite cured product according to one embodiment of the present invention.
  • FIG. 6 is a conceptual diagram of the raw material adjustment mechanism according to the first embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a production system for a composite cured product according to the first embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a system for producing a composite cured product according to the present invention.
  • FIG. 9 is a schematic diagram of a system for producing a composite cured product according to the present invention.
  • FIG. 10 is a schematic diagram of a system for producing a composite cured product according to the present invention.
  • FIG. 11 is a schematic diagram of a system for producing a composite cured product according to the present invention.
  • FIG. 12 is a schematic diagram of a sludge treatment system according to a second embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a system for producing a water-containing molded article according to the present invention.
  • FIG. 14 is a partial schematic view of a sludge treatment system according to the present invention.
  • FIG. 15 is a partial schematic diagram of a sludge treatment system according to the present invention.
  • FIG. 16 is a partial schematic view of a sludge treatment system according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
  • the composite cured product 1 includes an inorganic amorphous material 2 composed of two or more oxides, and an organic fibrous material 3 is mixed in the inorganic amorphous material 2.
  • Inorganic amorphous body 2 composed of two or more oxides is composed of oxide (1) monoxide (2) —oxide (n) (where n is a natural number and oxide (1), Oxide (2) and oxide (n) are different oxides).
  • the inorganic amorphous substance 2 is an amorphous compound formed by performing a solid solution or hydration reaction of two or more kinds of oxides.
  • X-ray fluorescence spectroscopy such inorganic amorphous compounds were analyzed for the elements that make up the oxide (A1, Si, Ca, Na, Mg, P, S, K, Ti, Mn, Fe).
  • At least two types selected from Zn) and X-ray diffraction analysis shows a halo in the range of 2 °: 10 ° to 40 °. This halo is a gradual undulation of the intensity of the X-rays, and is observed as a broad swell on the X-ray chart.
  • the halo has a half width of 2 ⁇ : 2 ° or more.
  • the inorganic amorphous material 2 has a role as a strength-expressing substance, and the organic fibrous material 3 is dispersed in the inorganic amorphous material 2 to improve the fracture toughness value. Bending strength value ⁇ ⁇ Improved impact resistance. In addition, a homogeneous cured composite 1 having no anisotropy in strength can be obtained. Furthermore, the inorganic amorphous body 2 provides sufficient strength at a low density.
  • the inorganic amorphous body 2 is a strength-expressing substance is not clear, but it is presumed that crack progress is inhibited as compared with a crystalline structure. Further, it is considered that the fracture toughness value is also improved because the amorphous fibrous material 3 is more easily dispersed uniformly in the amorphous state than in the crystalline state. As a result, cracking does not occur even when nails are driven in or through holes are provided, making it ideal for building materials and other materials that require processing.
  • oxides of metals and / or non-metal can be used oxides of metals and / or non-metal, A l 2 ⁇ 3, S I_ ⁇ 2, C A_ ⁇ , Na 2 ⁇ , MgO, P 2 0 5, S0 3, K 20 , T i ⁇ 2 , Mn ⁇ , F It is desirable to be selected from e 2 ⁇ 3 and Z ⁇ .
  • the complex of 2 is optimal.
  • the complex of the inorganic amorphous form 2, A 1 2 0 3, S i 0 2 and C a O is preferably made of one or more oxides of metals and / or non-metal excluding.
  • a 1 2 0 3 - S i 0 2 - C a O based inorganic amorphous body 2 made from, A 1 2 0 3, all of the S i 0 2 and the components of C a O, or some Is a compound that is produced by the hydration reaction. That is, compound A 1 2 ⁇ 3 and S i 0 2, S i 0 2 and C a 0, A 1 2 0 3 and ⁇ & 0 and A 1 2 0 3, the combination of S i 0 2 and C a O, It is thought to be formed by solid solution or hydration reaction at
  • a 1 2 0 3 the system plus at least one oxide other than S i 0 2 and C A_ ⁇ are contemplated.
  • the inorganic amorphous body 2 composed of A 1 0 2 3 —S i 0 2 —C a O—oxide system is different from the combination of the above A 1 2 0 3 —S i 0 2 —C a ⁇ system to, a 1 2 0 3 oxide, S i 0 2 and oxides, oxides C a O, a 1 2 0 3 and S i 0 2 and oxide, 3 1_Rei 2 and.
  • oxides A 1 2 ⁇ 3, C a O and oxides, and a combination of A 1 2 0 3, S I_ ⁇ 2, C a O, and oxides are generated by a solid solution or hydration It is considered to contain a compound having The two or more oxides (i.e., A 1 2 0 3 - S i ⁇ 2 - C a O-oxides (n) based (n is a natural number of 2 or more)) non Akirashitsutai consisting the following May contain compounds.
  • oxide (1), oxide (2) ... oxide (n) (n is a natural number of 2 or more, and oxide (n) means different oxides for different values of n, and A
  • Such inorganic amorphous compounds were analyzed by X-ray fluorescence analysis to determine the oxide constituent elements (Na, Mg, P, S, K, Ti, At least two types selected from Mn, Fe, and Zn), that is, at least two types selected from Na, Mg, P, S, K, Ti, Mn, Fe, and Zn.
  • the halo is seen in the range of 2 °: 10 ° to 40 ° in the analysis chart by X-ray diffraction.
  • a 1 2 0 3, S i 0 2 and the oxide combined with the C a O is at one or two or more kinds, metals excluding A 1 2 0 3, S i 0 2, C a O and / or it can be used oxides of non-metallic, for example, N a 2 ⁇ , Mg_ ⁇ , P 2 0 5, S_ ⁇ 3, K 2 0, T i ⁇ 2, MnO, F e 2 0 3 and Zeta eta You can choose from ⁇ . This selection is based on the properties expected of the composite cured product.
  • N a 2 0 or K 2 ⁇ for example because it can removed with an alkali, by performing the removal process prior to plating, is rough to be plated surface of the composite cured surface, the surface of the plated anchor Can act as
  • Mg O contributes to strength development form a solid solution with the A 1 2 0 3, S i ⁇ 2, C A_ ⁇ , greatly improve the bending strength of Ya impact resistance.
  • S 0 3 is suitable for antibacterial building material has a bactericidal action.
  • T i 0 2 together with a whitish coloring agent, since it acts as a photooxidation catalyst, the deposited organic contaminants can be forcibly oxidize only was irradiated with light with a contaminant can wash. Therefore, it has a unique effect that it can be used as building materials, various filters, and reaction catalysts.
  • Mn O is ⁇ coloring material
  • F e 2 O 3 is colorant bright color
  • Z N_ ⁇ is useful as colorant whitish.
  • These oxides may be present alone in the amorphous body.
  • C A_ ⁇ _ZA 1 2 ⁇ 3 0.2 the ratio of, by adjusting the 12.5 or less, the strength large A cured product 1 is obtained. Further, A 1 2 0 3, S i 0 2 and C Na 2 ⁇ excluding a O, MgO, P 2 0 5, S0 3, K 2 0, T i 0 2, MnO, F e 2 ⁇ 3 and, When one or more oxides of ZnO are contained, the preferred contents of each component are as follows. It goes without saying that the total amount of these oxides does not exceed 100% by weight.
  • Mg 2 O 0.3 to 11.0 weight based on the total weight of the composite cured product 1. /.
  • P 2 O 5 0.1 to 7.3 weight based on the total weight of the composite cured product 1. /.
  • ⁇ 0.1 to 1.8 weight based on the total weight of the composite cured product 1. /.
  • the reason for limiting the content of these oxides to the above range is that if the content is outside the above range, the strength of the composite cured product 1 will decrease.
  • Hydrogen in the structure Aluminum Silicate ⁇ Kaolinite ⁇ Zeolite, Gehlenite , Anorthit e, Melitite, Gehlenite- synthetic, tobermorite, xonotlite, ettringite and, S i 0 2, A 1 2 0 3, C a O, Na 2 0, Mg O , P 2 0 5, S_ ⁇ 3, K 2 0, T I_ ⁇ 2, Mn 0, F e 2 0 3, and Z oxides such nO, and C a C_ ⁇ 3 (Calcite) crystal of the like It may be mixed.
  • crystals are not considered to be strength-generating substances themselves, but are considered to have the effects of, for example, increasing the hardness and density to improve the compressive strength and suppressing the progress of cracks.
  • Can be The content of the crystal is preferably 0.1 to 50% by weight based on the total weight of the composite cured product 1. Because the crystal is 0.1 weight. /. If it is less than 50%, the compressive strength will not be improved even if the hardness and density are increased, and the effect of suppressing the progress of cracks will not be obtained sufficiently. If it exceeds 50% by weight, the bending strength will be reduced.
  • the A 1 2 0 3 - S I_ ⁇ 2 based crystal compound is Hydrogen Aluminum Silica te, Kaolinite, contains crystals of Zeolite, A 1 2 O 3 - C A_ ⁇ based crystalline compound of Cal containing crystals of cium Aluminate, C a O _ S i O 2 based crystalline compound of containing crystal of Calcium Si licate, a 1 2 0 3 - S i O 2 - C a O -based crystal
  • the crystalline compound contains crystals of Gehlenite, syn, and Anorthite.
  • a 1 2 ⁇ 3 - contains the C a O- M g O-based crystalline compound of Melitite, Gehlenite- synthetic crystal of - S i O 2.
  • Halogen may be added to the inorganic amorphous body 2 composed of at least two or more types of oxides. Halogen catalyzes solid solution and hydrate formation reactions and also acts as a combustion suppressant. Its halogen content is 0.1-1.2 weight. / 0 is desirable. Why 0.1 weight. /. If the content is less than 1.2% by weight, harmful substances are generated by combustion. As the halogen, chlorine, bromine, and fluorine are preferable.
  • calcium carbonate (Calcite) may be added to the inorganic amorphous body 2.
  • Charcoal Acidic calcium itself is not a strength-expressing substance, but it is considered that the inorganic amorphous body 2 surrounding the carbonic acid calcium prevents growth of cracks and contributes to strength improvement.
  • the content of this calcium carbonate is 0.1 weight. /. It is desirable that the content be 48% by weight or less. The reason for this is that if it exceeds 48% by weight, the bending strength decreases, and if it is less than 0.1% by weight, it does not contribute to the strength improvement. In particular, the content is preferably 3% by weight.
  • the addition of a binder is also advantageous for further improving the strength and for improving the water resistance, chemical resistance and fire resistance.
  • thermosetting resin is preferably at least one selected from a phenol resin, a melamine resin, an epoxy resin, and a urea resin.
  • the inorganic binder is preferably at least one selected from the group consisting of sodium silicate, silica gel and alumina sol.
  • the organic fibrous material 3 mixed in the inorganic amorphous body 2 is preferably selected from polysaccharides. Because polysaccharides having an OH group, since easy bound to A 1 2 0 3, S i 0 2 or various compounds of C A_ ⁇ by hydrogen bonding.
  • the polysaccharide is desirably at least one compound selected from amino sugars, peronic acid, starch, glycogen, inulin, lichenin, cellulose, chitin, chitosan, hemicellulose and pectin.
  • the organic fibrous material 3 composed of these polysaccharides it is generally preferable to use pulp, pulp grounds, or crushed waste paper such as newspapers and magazines.
  • the content of the organic fibrous material 3 is desirably 2 to 75% by weight. The reason is that if it is less than 2% by weight, the strength of the composite cured body 1 decreases, while the weight is 75%. If the ratio exceeds / 0 , the fire protection performance, water resistance, dimensional stability, and the like may be reduced. Further, the average length of the organic fibrous material 3 is desirably 10 to 100 m. If the average length is too short, no entanglement will occur, and if the average length is too long, voids will form, and the strength of the composite cured product 1 will tend to decrease.
  • the composite cured product 1 is obtained by drying papermaking sludge (scum). Coagulation hardening is optimal.
  • papermaking sludge is pulp residue containing inorganic substances, This is because it contains fibrous material 3 and uses industrial waste as a raw material, which is low cost and contributes to solving environmental problems.
  • the papermaking sludge itself has a function as a binder itself, and has an advantage that it can be formed into a desired shape by kneading with other industrial waste.
  • the papermaking sludge, in addition to pulp, A 1 2 0 3, S I_ ⁇ 2, C a O, N a 2 ⁇ , M g ⁇ , P 2 0 5, S_ ⁇ 3, K 2 0, T i ⁇ 2, M n O, sol-like material is a crystalline or precursors of these oxides F e 2 O 3, and Z N_ ⁇ , or composites thereof, at least one selected from halogen and carbonate Cal Shiumu, and Contains water.
  • the water content in the papermaking sludge is desirably 20 to 80% by weight. Because the water content is 20 weight. /. If the amount is less than 100%, the papermaking sludge becomes too hard and molding becomes difficult. On the other hand, if it exceeds 80% by weight, the papermaking sludge becomes slurry and the molding becomes difficult.
  • mixing the inorganic particles 4 as an inorganic component in the composite cured product 1 improves the fire resistance, or develops strength by reacting with the inorganic amorphous material 2. This is advantageous for forming a substance to improve the strength.
  • the specific gravity of the composite cured product 1 can be adjusted by adjusting the amount of the inorganic particles 4.
  • the inorganic particles 4 at least one selected from calcium carbonate, calcium hydroxide, shirasu, shirasu balun, perlite, aluminum hydroxide, silica, alumina, talc, calcium carbonate, and industrial waste powder can be used.
  • the industrial waste powder it is desirable to use at least one or more selected from calcined powder of papermaking sludge, grinding dust of glass, and grinding dust of silica sand. This is because the use of these industrial waste powders can reduce costs and contribute to solving environmental problems.
  • the inorganic particles of papermaking sludge can be obtained by subjecting papermaking sludge to heat treatment at 300 to 150 ° C. Since the inorganic particles thus obtained are amorphous, have excellent strength and toughness, and have a low density, a weight reduction can be realized by dispersing the inorganic particles in the composite cured product. In addition, make paper sludge more than 300 ° C.
  • the inorganic particles obtained by sintering at a temperature lower than ° C or by quenching after heat treatment at 300 to 150 ° C are advantageous because they surely contain an amorphous body.
  • the specific surface area of the inorganic particles 4, 0. 8 is desirably 1 is 0 O m 2 Z g. O: If it is less than 8 m 2 / g, the contact area between the amorphous body and the inorganic particles becomes small and the strength is reduced. Conversely, if it exceeds 100 m 2 / g, the effect of crack propagation and improvement of hardness is obtained. Decreases, resulting in a decrease in strength.
  • the inorganic particles 4 contain at least one or more inorganic substances selected from silica, alumina, iron oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, and phosphorus pentoxide. The reason is that it is chemically stable, has excellent weather resistance, and has desirable characteristics as industrial materials such as building materials.
  • the average particle diameter of the inorganic particles 4 be in the range of 1 to 100 m in order to obtain sufficient strength.
  • the content of the inorganic particles 4 is 10 to 90% by weight. /. Hope that is. That is, if the amount of the inorganic particles 4 is too large, the strength is reduced, and if the amount of the inorganic particles 4 is too large, the strength becomes fragile, and in any case, the strength is reduced.
  • the composite building material includes a core 5 and a reinforcing layer 6 disposed on both sides (or one side) of the core 5.
  • the composite cured product 1 produced by the method of the present invention is applied to the core material 5.
  • the bending strength of the core material 5 itself is improved. Even when a tensile force is applied to the core material 5, the core material 5 is not easily broken due to the provision of the reinforcing layer 6.
  • no dent or depression occurs.
  • a decorative layer such as a decorative panel or decorative veneer is provided on the reinforcing layer 6 so that impact resistance is improved and scratches such as dents do not easily occur. And the design is prevented from deteriorating.
  • the reinforcing layer 6 is made of a resin 6a including a fiber base material 6b. It is particularly desirable to use a thermosetting resin as the resin 6a. That is, unlike a thermoplastic resin, a thermosetting resin has excellent fire resistance and does not soften even at high temperatures, so it is suitable for use as a reinforcing layer. is there.
  • a thermosetting resin phenol resin, melamine resin, epoxy resin, polyimide resin, urea resin and the like can be used.
  • the content of the thermosetting resin in the reinforcing layer is set at 10% by weight. /. ⁇ 65 weight. /. It is desirable to be within the range.
  • inorganic fibers As the fiber base material 6b. This is because the strength of the reinforcing layer 6 can be improved and the coefficient of thermal expansion can be reduced.
  • the inorganic fiber one or more of glass fiber, rock wool, ceramic fiber, glass fiber chopped strand mat, glass fiber opening bing cloth, glass fiber continuous strand mat, and glass fiber paper can be used. It is preferable because it is inexpensive and has excellent heat resistance and strength.
  • the fiber base material a non-continuous fiber formed into a mat shape or a continuous long fiber cut into a 3 to 7 cm cut into a mat shape (a so-called chioped strand mat) is used. It is possible to use fibers that have been dispersed in water and swept up into sheets, continuous long fibers that have been spirally laminated to form a mat, or woven continuous long fibers. it can.
  • the capturing layer 6 has a thickness of 0.1 to 3.5 mm. When set in this range, sufficient rigidity and impact resistance can be obtained, and high workability can be maintained.
  • the reinforcing layer 6 may contain a flame retardant such as aluminum hydroxide and magnesium hydroxide, and a commonly used inorganic binder such as silica sol, alumina sol and water glass.
  • Papermaking sludge is used as a raw material of the composite cured product 1.
  • printing 'information paper, craft paper, titanium paper, tissue paper, dust paper, toilet paper, sanitary products, or towel paper can be used.
  • papermaking sludge discharged in a pulp manufacturing process, a waste paper raw material processing process, or a papermaking process when manufacturing industrial hybrid paper or household hybrid paper can also be used.
  • various inorganic powders and resins may be used as raw materials for the composite cured product 1: First, as shown in FIG. 6, the raw material adjustment mechanism 10 adjusts the raw material.
  • the floc 12 is added to the raw material 11, and the raw material 11 and the floc 12 are mixed in the mixer 13 to form a slurry 14.
  • the water content of the slurry 14 is desirably 65 to 80% by weight. Within this range, collapse of the slurry 14 during transport is prevented.
  • the slurry 14 is suction-dehydrated using a dehydration vessel 15 having a filter 16 at the bottom to obtain a raw material containing papermaking sludge.
  • a dehydration vessel 15 having a filter 16 at the bottom to obtain a raw material containing papermaking sludge.
  • the water content of the slurry 14 becomes 65% by weight or less.
  • the fibers of the papermaking sludge are not oriented, so that the composite cured body is less likely to warp or crack.
  • the bottom of the dewatering vessel 15 is connected to a vacuum pump 17, and the moisture of the raw material is sucked by operating the vacuum pump 17.
  • the filter 16 is not particularly limited, but may be a sintered metal, a perforated metal plate (a metal plate having a diameter of 1 to 5 holes), a porous ceramic filter, a porous resin or a glass fiber plate. .
  • a composite cured body 1 is produced by a papermaking nopress mechanism 20, a heating dryer 30, a cutting machine 40, and an inspection machine 50 shown in FIG. 7.
  • the raw material containing papermaking sludge is pressurized while being conveyed at a water content of 20 to 60% by weight by a papermaking Z press mechanism 20 to dehydrate and dry the raw material (a so-called filter press). Since pressing is performed in a hydrous state, fibers and inorganic sol move easily, and stress hardly remains after drying and curing. Therefore, occurrence of warpage crack is prevented. In addition, since it is in a water-containing state, the curing reaction does not proceed, and the occurrence of cracks is prevented.
  • the papermaking press machine 20 includes a belt conveyor 22 for carrying.
  • the belt 22b of the belt conveyor 22 is made of a porous material through which water can pass, and is suspended between a pair of rollers 22a.
  • the belt 22b is made of inorganic fiber solidified with a binder together with a metal wire, or woven or knitted inorganic fiber, porous resin, sintered metal, porous metal, metal mesh or screen. It is preferably formed.
  • a suction box 24 connected to a vacuum pump 26 is provided behind the belt 22 b. It is desirable to carry out dehydration drying while suctioning water with the suction box 24.
  • the belt 22b may be arranged above the raw material.
  • the conveying speed of the raw material is preferably 1 to 3 OmZ. Considering the productivity, it is desirable that the speed is relatively high. However, if the speed exceeds the above range, the dehydration becomes incomplete and the crystallization of the inorganic sol occurs.
  • the pressurization of the raw material is performed using a roller 28. It is desirable that the interval between the rollers 28 is such that the rollers are brought closer to line contact from line contact. As shown in FIG. 8, the raw material may be pressed by a roller 28 via a belt 29.
  • the pressure by the roller 28 is suitably from 10 to 300 kgf Z cm 2 . The reason for this is that if the pressure is too low, crystallization will proceed too much, and if the pressure is too high, the shape will be lost.
  • the material After dehydrating and drying under pressure with a papermaking / pressing mechanism 20 to reduce the water content of the raw material to 20% or less, the material is completely dehydrated with a heating drier 30 to advance the curing reaction.
  • the heating and drying are performed while the raw material 14 is conveyed by the conveyor 32 and pressed by the rollers 38.
  • the heating temperature is preferably from 80 to 2000 ° C.
  • the heating dryer 30 preferably includes an electric heating heater 34. Alternatively, an infrared heater or sun dryer may be used.
  • the heating dryer 30 blows warm air using the fan 36.
  • the reason for pressurization is to make it easier to remove water from the raw material. Pressure is suitably 1 ⁇ 1 0 kgf / cm 2. If the pressure is too high, it is not preferable because it causes cracks.
  • the hardening raw material 14 is further conveyed, and cut into a predetermined size by the cutting machine 40 to form the composite hardened body 1.
  • the cutting is performed with a cutter 42 provided on the conveyor 42 or a saw (not shown).
  • the obtained composite cured product 1 is finally inspected for warpage or the like by an inspection machine 50.
  • An X-ray sensor or an infrared sensor can be used as the inspection device. Further, the presence or absence of chipped cracks may be inspected by an image processing device or the like.
  • the reinforcing layer pre-layer 62 may be continuously heated and pressed on the composite cured body 1 by the rollers 68 on the composite cured body 1 during transportation to laminate the reinforcing layer 62. This By the process, the composite cured body 1 of FIG. 3 is formed.
  • the pre-preda 62 is sent to a roller 68 via a transport roller 64. It is preferable that the pre-predator 62 be a B-stage made by impregnating the inorganic fiber mat with the resin composition and drying it.
  • the inorganic fiber glass fiber, rock wool or ceramic fiber is preferably used.
  • the resin composition an epoxy resin, a fuanol resin, a diaryl phthalate resin or an amino resin can be used.
  • various pigments or inks 74 may be sprayed from the nozzles 72 on the pre-predator 62 during transportation to apply the coatings 76.
  • the ink can also be printed.
  • a decorative plate or veneer may be attached.
  • a three-layer decorative board composed of a phenol resin-impregnated core layer, a melamine resin-impregnated pattern layer, and a melamine resin-impregnated overlay layer can be used.
  • a decorative board having a four-layer structure including a melamine resin-impregnated packer layer, a funinol resin-impregnated core layer, a melamine resin-impregnated pattern layer, and a melamine resin-impregnated overlay layer can also be used.
  • a decorative board having a phenol resin impregnated core layer the surface strength is significantly increased, and thus it can be applied to flooring and the like.
  • high quality wood such as cedar and cypress can be used as the decorative veneer.
  • the composite cured product 1 obtained in this manner was converted into a fluorescent X-ray analyzer (manufactured by Rigaku).
  • composition was as follows in terms of oxide.
  • the pulp was calcined at 110 ° C. and measured from the weight loss.
  • Pulp 51.4 weight. /. , S ⁇ 0.
  • papermaking sludge is separated and extracted from three types of sludge.
  • the first sludge is kraft pulp slurry S1, which is discharged when kraft paper is manufactured.
  • the second type of sludge is waste paper pulp slurry S2 discharged during the processing of waste paper.
  • the third type of sludge is papermaking pulp slurry S3 discharged in the papermaking process.
  • the craft parb slurry S 1 is stored in the decolorizing tank 2 12.
  • decolorization tank 211 kraft pulp is bleached by adding hydrogen peroxide, and pulp and papermaking sludge are separated. Pulp in the upper layer of the decolorization tank 2 12 is discharged to the sedimentation tank 2 14 via the pulp transfer passage 2 13.
  • the settling tank 214 the papermaking sludge is settled by adding a flocculant. The precipitated paper sludge is supplied to the concentration tank 2 16 via the transfer passage 2 15 and the mixing pit 2 18.
  • the papermaking sludge settled in the lower layer of the decolorization tank 2 12 is supplied to the concentration tank 2 16 through the sludge transfer passage 2 17 and the mixing pit 2 18.
  • concentration tank 2 16 papermaking sludge precipitates due to the addition of coagulant.
  • the precipitated paper sludge is supplied from the concentration tank 2 16 as a final raw material to the first screw press 220 as a pressing means via the transfer passage 2 19 and the joining pit 237. According to the 1st Screw Press 220
  • the papermaking sludge is squeezed to remove some moisture from the papermaking sludge.
  • the wastepaper pulp slurry S2 in which the papermaking sludge is preliminarily dewatered by the first screw press 220 is stored in the settling tank 223.
  • the papermaking sludge is settled by the addition of the flocculant.
  • the papermaking sludge is supplied as a final raw material through a sludge transfer passage 224 to a second screw press 225 as a pressing means.
  • the second screw press 225 similarly to the first screw press 220, the papermaking sludge is squeezed, and a part of the papermaking sludge is removed.
  • the pulp in the upper layer in the settling tank 223 is supplied to the pressurized floating tank 228 via the pulp transfer passage 227.
  • An aeration device (not shown) is provided in the pressurized flotation tank 228.
  • the papermaking sludge floats in the pressurized flotation tank 228 due to bubbles ejected from the aeration device, and the pulp precipitates.
  • the papermaking sludge in the upper layer is supplied to the second screw press 225 via the discharge passage 229 and the sludge transfer passage 224.
  • the pulp in the lower layer is supplied to the sedimentation tank 214 via the transport path 230 and the junction pit 232.
  • the pulp supplied to the precipitation tank 214 is supplied to the concentration tank 216 as described above.
  • the papermaking pulp slurry S 3 is stored in the sedimentation tank 235.
  • the papermaking sludge is settled by the addition of the flocculant.
  • the papermaking sludge is supplied to the first screw press 220 via a sludge transfer passage 236 and a confluence pit 237.
  • a sludge transfer passage 236 By passing through each of the tanks 212, 214, 216, 223, 228 and 235, papermaking sludge is separated and extracted from each of the slurries S1 to S3. That is, each of the tanks 21 2, 214, 216, 223, 228, 235 constitutes a separation and extraction means.
  • the dewatering device 242 includes a belt conveyor 243 that conveys the papermaking sludge 240.
  • the conveying speed of the belt conveyor 243 is preferably 1 to 3 OmZ.
  • the belt conveyor 243 includes a pair of rollers 244, 245 and a transport belt 246 mounted on the rollers 244, 245.
  • the transfer belt 246 may be made of inorganic fibers fixed together with a metal wire or the like with a binder, or woven or knitted inorganic fibers, porous resin, sintered metal, porous metal, metal mesh or screen. Preferably, be formed.
  • a plurality of suction boxes 247 are provided inside the conveyor belt 246 along the longitudinal direction of the conveyor belt 246. Each suction box 247 is connected to a vacuum pump 249 via a suction path 248.
  • a separator tank 250 is provided on the suction path 248. Separator tank 250 separates moisture and air sucked by vacuum pump 249.
  • a plurality of (four in the present embodiment) pressure rollers 251 are arranged side by side along the transport direction of the papermaking sludge 240. Papermaking sludge 240 is inserted between the pressure roller 25 1 and the belt conveyor 24 3. Each pressure roller 25 1 is arranged at a different position. That is, the pressure roller 25 1 on the downstream side is disposed closer to the belt conveyor 24 3 than the pressure roller 25 1 on the downstream side. This is because the pressure is gradually increased as the papermaking sludge 240 is conveyed.
  • the arrangement interval of the pressure rollers 25 1 is relatively narrow. This is because each pressure roller 25 1 is in line contact with the papermaking sludge 240, so if the space between each pressure roller 2 51 is narrowed, it is possible to approach surface contact as a whole. Because. It is desirable that the pressure of the pressurizing roller 25 1 is 3 to 300 kgf / cm 2 . If the pressure is too low, the crystallization of the papermaking sludge 240 proceeds, dehydration becomes insufficient and drying takes time, and drying shrinkage increases. Conversely, if the pressure is too high, the papermaking sludge 240 will lose its shape. A drying device 255 is disposed downstream of the dehydrating device 242.
  • the drying device 255 includes a conveyor device 256 for transporting the papermaking sludge 240 supplied from the dewatering device 242.
  • the conveyor device 256 includes a plurality of rollers 257, 258, 259 and a rotating belt 260 wrapped around each of the rollers 257-259. When any one of the mouthpieces 25 7 to 25 9 rotates, the rotating belt 260 rotates.
  • a plurality (two in the present embodiment) of pressing rollers 261 are arranged side by side along the transport direction of the papermaking sludge 240. Papermaking sludge 240 is sandwiched between each pressing roller 261 and the conveyor device 256. Each pressing roller 26 1 is arranged at the same position with respect to the conveyor device 256.
  • the reason why the papermaking sludge 240 is pressurized by the pressing roller 261 is to remove water contained in the papermaking sludge 240.
  • the pressing force of the pressing roller 26 1 is preferably 1 to 50 kgf / cm 2 . If the pressure is too high, the papermaking sludge 240 will crack.
  • the drying device 255 includes an electric heater 262 for heating the papermaking sludge 240.
  • a blower fan 2 63 is disposed at a position facing the electric heater 26 2. By driving the blower fan 26 3, warm air is supplied from the electric heater 26 2 to the papermaking sludge 240. Thereby, drying of the papermaking sludge 240 is promoted.
  • the heating temperature of the electric heater 262 is set to 80 to 200 ° C.
  • the drying method includes a method of blowing hot air from a nozzle, a method using microwaves, and a vacuum drying method.
  • the hot air may be obtained from combustion of kerosene, heavy oil, and the like.
  • a cutting machine 265 is arranged downstream of the drying device 255.
  • the cutting machine 265 is provided with a transport conveyor 266 including a pair of rollers 267, 268 and a belt 269 wrapped around each roller 267, 268. . As one of the rollers 2667 and 268 rotates, the belt 269 rotates. Above the conveyor 2, 6
  • a spraying device 275 as a surface treatment means is disposed on the downstream side of the cutting machine 265.
  • the spraying device 275 has a pair of nozzles 277, 277.
  • the treating agent is sprayed from the nozzles 276 and 277 to the surface of the papermaking sludge 240 cut by the cutting machine 265.
  • a paraffin-based waterproofing agent is used as the treating agent.
  • a phenol resin or various paints may be used.
  • FIG. 13 is a schematic diagram of a system for producing a water-containing molded article by a papermaking method.
  • the system receives papermaking sludge from the thickening tank 2 16 and makes papermaking sludge to produce a hydrated molded body.
  • the process of separating and extracting paper sludge and the process of manufacturing molded products are integrated. Specifically, the papermaking sludge from the thickening tank 2 16
  • the paper is supplied to 210, and the paper is formed by a round net 2220a, 222b, and 220c for papermaking.
  • the papermaking sludge produced is transferred to a belt 230, and the papermaking sludge transferred to the belt 230 is sent to a making roll 300 by rollers 350, and a making roll 300,000.
  • Is transferred to A suction port 240 is formed in the back surface of the belt 230 and in the round net 220 0 a, 220 b, and 220 c for papermaking, from which water from papermaking sludge is formed. Is sucked.
  • a first groove for accommodating 300 and a second groove for storing water are formed adjacent to the first groove.
  • the papermaking sludge 26 is extruded by pushing out the piano wire 330 from the first groove toward the outer circumference of the making roll 300. 0 0 is disconnected.
  • the cut papermaking sludge 260,000 is separated from the making roll 300,000 as a water-containing molded body and moves to the conveyor belt 3,800.
  • the hydrous molded article may be created using a cutter 360.
  • a plurality of papermaking sludges 260 may be laminated, and the laminated papermaking sludges may be pressurized and dewatered to be integrated.
  • Kraft parb slurry S1 in the decolorizing tank 2 1 2 is separated into pulp and papermaking sludge.
  • the pulp is transferred to the sedimentation tank 214, where the pulp is further separated into pulp and papermaking sludge, and only the papermaking sludge is transferred to the thickening tank 214.
  • the papermaking sludge is transferred from the decolorizing tank 2 12 to the thickening tank 2 16, where it is further separated into pulp and papermaking sludge, and only the papermaking sludge from the thickening tank 2 16 Transferred to 220.
  • the waste paper pulp slurry S 2 in the sedimentation tank 223 is separated into pulp and papermaking sludge, and the pulp is transferred to the pressure floating tank 228.
  • aeration treatment is carried out by an aeration device (not shown) in the pressurized floating tank 228, the papermaking sludge floats in the pressurized floating tank 228, and only the knoll precipitates in the pressurized floating tank 228.
  • the papermaking sludge that has surfaced is moved to the second screw press 222, the pulp that has settled is transferred to the sedimentation tank 214, and the papermaking sludge is transferred from the sedimentation tank 214 to the first screw press 220. . Further, papermaking sludge is transferred from the sedimentation tank 223 to the second screw press 225.
  • the papermaking pulp slurry S3 in the settling tank 235 is separated into pulp and papermaking sludge, and the papermaking sludge is directly transferred to the first screw press 220.
  • a water-containing compact was produced from the papermaking slurry S3 in the sedimentation tank 235 by the above-mentioned papermaking method.
  • the slurry is finally separated from each of the slurries S1 to S3.
  • the extracted papermaking sludge is squeezed to remove water contained in the papermaking sludge to some extent.
  • the water content of the papermaking sludge is 20 to 60%.
  • the removal of water in the pressing process is preliminary. If the squeezing step is not performed, the water content of the papermaking sludge will be relatively large, and it will be difficult to form the papermaking sludge into a plate shape during the dewatering step.
  • the papermaking sludge discharged from the first and second screw presses 220, 221 is mixed in a sludge supply path 241.
  • a predetermined amount of the inorganic particles 4 is mixed with the papermaking sludge to adjust the amount of the inorganic material occupied in the papermaking sludge.
  • the papermaking sludge 240 power obtained through the separation / extraction step and the pressing step is transferred to the dewatering device 242 as a raw material of the composite hardened body 1 (product).
  • the papermaking sludge 240 is sandwiched between the belt conveyor 243 and the pressure roller 251. Then, when the papermaking sludge 240 is conveyed by the belt conveyor 243, the papermaking sludge 240 is pressed by the pressure rollers 251 to form a plate-like papermaking sludge 240. . Since the pressing force gradually increases as the papermaking sludge 240 is conveyed to the downstream side by the respective pressure rollers 251, the conveyance is smoothly performed and the papermaking sludge 240 having a flat surface is formed. Is done.
  • This pressurization removes most of the water contained in the papermaking sludge 240. Specifically, the moisture content of papermaking sludge 240 is 5 to 15%.
  • the water removed from the papermaking sludge 240 passes through the conveyor belt 246, reaches the suction box 247, and is sucked from the suction box 247 by the vacuum pump 249.
  • the paper sludge 240 after the dewatering is completed is transferred to the drying device 255 by the belt conveyor 24.
  • the papermaking sludge 240 is conveyed while being sandwiched between the conveyor device 256 and the pressing roller 261.
  • a pressing force higher than the pressing force in the dewatering step is applied to the papermaking sludge 240 by the pressing roller 261, and water is removed from the papermaking sludge 240.
  • Hot air is blown from the electric heater 262 onto the surface of the papermaking sludge 240 by the rotation of the blower fan 263.
  • the papermaking sludge 240 is completely dehydrated, and its water content becomes 0% to 7% and hardened.
  • the dried papermaking sludge 240 is transferred to a cutting machine 265 by a conveyor device 256.
  • the papermaking sludge 240 is cut into a predetermined size by a cutter 270 on a transport conveyor 266, and the composite cured body 1 is manufactured. And complex curing The body 1 is transferred to the spraying device 275 by the conveyor 2666.
  • the spraying device 275 a treating agent is applied to both the front and back surfaces of the composite cured body 1 from the nozzles 276, 277.
  • the composite cured body 1 is waterproofed. Therefore, according to the second embodiment, the following effects can be obtained.
  • the papermaking sludge 240 is dewatered by the dewatering device 242, the papermaking sludge 240 is dried by the drying device 255. Therefore, the papermaking sludge 240 can be hardened in a short time. Therefore, the production efficiency of the composite cured product 1 is improved.
  • the papermaking sludge 240 is compressed by the first and second screw presses 222,225. That is, before the dewatering step of the papermaking sludge 240, the water is preliminarily squeezed out of the papermaking sludge 240 by pressing. Thus, the water content of the papermaking sludge 240 can be adjusted before the papermaking sludge 240 is supplied to the dewatering device 242. Further, it becomes easy to form the papermaking sludge 240 into a plate shape by the dewatering device 242. At the same time, since the water content of the papermaking sludge 240 is appropriately adjusted, the transport efficiency in the dewatering device 242 is improved.
  • the pressed papermaking sludge 240 and a predetermined amount of the inorganic particles 4 are mixed, and the mixture is used as a final raw material of the composite hardened body 1. For this reason, the distribution amount of the inorganic substance in the papermaking sludge 240 can be easily adjusted according to the use of the composite cured body 1. Therefore, the composite cured body 1 can be effectively used in all fields. Can be used.
  • the fire resistance of the composite cured product 1 is improved, and a strength developing substance is formed by the reaction with the amorphous material to improve the strength. Further, the specific gravity of the composite cured product 1 can be adjusted.
  • a drainage improver such as a flocculant may be added to the papermaking sludge 240 to increase the dewatering efficiency of the water in the dewatering step.
  • Paper sludge may be separated and extracted from one or two pulp slurries, or even four or more pulp slurries.
  • Printing ⁇ Information paper, titanium paper, tissue paper, sanitary products, towel paper, industrial hybrid paper or household hybrid paper, paper paper sludge may be separated and extracted from the parcel slurry discharged.
  • a conveying belt 2466 made of a non-porous material may be mounted on each pressure roller 251.
  • the papermaking sludge 240 is pressed by the surface of the conveyor belt 246 to perform a dewatering process.
  • the papermaking sludge 240 having a flat surface is formed.
  • an inspection machine 2 8 7 for inspecting the warpage of the cut paper sludge 240 May be provided.
  • the inspection machine 287 an X-ray sensor or an infrared sensor can be used. If an image processing device is used as the inspection machine 287, it is also possible to inspect the papermaking sludge 240 for chips or cracks.
  • a prepreg 285 for a reinforcing layer is conveyed by conveying rollers 284 on both sides of the papermaking sludge 240 conveyed from the drying device 255, and the rollers 286 With continuous heating breathing.
  • Pre-Preda 2 8 5 is a mat of inorganic fiber It is preferable to use one formed by impregnating and drying the resin composition.
  • Inorganic fibers include glass fiber, rock wool, and ceramic fiber.
  • an epoxy resin, a phenol resin, a diaryl phthalate resin or an amino resin can be used.
  • a belt conveyor 243 may be arranged on both sides of the papermaking sludge 240 instead of the plurality of pressure rollers 251.
  • a suction box 247 and a vacuum pump 249 are provided on each of the velvet conveyors 24, and moisture is sucked from both sides of the papermaking sludge 240. According to this configuration, the dewatering efficiency in the dehydration step is improved.
  • the number of pressure rollers 2 51 is not limited to four, but may be one.
  • the surface of the papermaking sludge 240 may be coated using various pigments, inks, thermosetting resins, or the like.
  • a decorative plate may be attached to the surface of the papermaking sludge 240.
  • decorative boards there are, for example, those having a three-layer structure and a four-layer structure.
  • a three-layer structure for example, it is composed of a phenol resin-impregnated core layer, a melamine resin-impregnated pattern layer, and a melamine resin-impregnated overlay layer.
  • a four-layer structure for example, it is composed of a melamine resin impregnated packer layer, a phenol resin impregnated core layer, a melamine resin impregnated pattern layer, and a melamine resin impregnated overlay layer.
  • decorative panels having a phenolic resin-impregnated core layer have extremely high surface strength and can be applied to building materials such as flooring materials.
  • a veneer veneer instead of a veneer may be attached to the papermaking sludge 240.
  • decorative veneers there are high quality wood such as cedar and cypress.
  • a round-mesh type paper machine or a batch type filter-press machine can be used. Further, the papermaking sludge 240 may be absorbed by a conveyor or a round-mesh paper machine, then cut into a predetermined size, and further dewatered while being pressed by a flat plate press.
  • cement C1 may be added to papermaking sludge.
  • Cement may be added after the paper sludge is separated and extracted, before or after the screw press.
  • Well The Strength and density can be improved by adding a cement component.
  • the composite cured product produced by the method of the present invention is used in various industries, and is used not only for new building materials replacing calcium silicate plate, perlite board, plywood, gypsum board, but also for artificial limbs and artificial limbs. It can be used for medical materials for bone and artificial roots, electronic materials such as core substrates for printed wiring boards and interlayer resin insulation layers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
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Abstract

L'invention concerne un procédé de fabrication d'un produit composite durci que l'on peut utiliser de manière efficace comme un grand nombre de matériaux industriels. Ce procédé consiste à aspirer et à déshydrater une matière (14) contenant une boue servant à la fabrication du papier, à comprimer ladite boue au moyen d'une presse, et à la sécher au moyen d'un sécheur (30), afin de fabriquer un produit composite durci. La matière contenant de l'eau étant comprimée, on n'exerce pas de contrainte prolongée avant la séchage, afin d'éviter les gauchissements et fissures.
PCT/JP2000/003953 1999-06-17 2000-06-16 Procede de fabrication d'un produit composite durci et procede de traitement de boue WO2000079052A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP11171514A JP2001003299A (ja) 1999-06-17 1999-06-17 複合硬化体の製造方法
JP11/171512 1999-06-17
JP11171512A JP2001003294A (ja) 1999-06-17 1999-06-17 複合硬化体の製造方法
JP11171513A JP2001001322A (ja) 1999-06-17 1999-06-17 複合硬化体の製造方法
JP11/171514 1999-06-17
JP11/171513 1999-06-17
JP2000/146164 2000-05-18
JP2000146164 2000-05-18

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WO2000079052A1 true WO2000079052A1 (fr) 2000-12-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011073851A1 (fr) * 2009-12-16 2011-06-23 Universidad Tecnologica De Pereira Procédé pour fabriquer des matériaux de construction à partir de résidus cellulosiques

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046567A (fr) * 1973-07-30 1975-04-25
JPS50101604A (fr) * 1974-01-18 1975-08-12
JPS5146756A (en) * 1974-10-18 1976-04-21 Sumitomo Chemical Co Haiekino shorihoho
JPS5236575A (en) * 1975-09-19 1977-03-19 Fujisash Co Method for solidifying the sludge from paper manufacturing
JPS5237812A (en) * 1975-09-19 1977-03-24 Fuji Satsushi Kogyo Kk Method of solidifying paper making sludge
JPS5512853A (en) * 1978-07-10 1980-01-29 Heisaku Inagawa Production of board using paper making sludge
JPS58176159A (ja) * 1982-04-07 1983-10-15 日本セメント株式会社 非晶質ケイ酸カルシウム成形体の製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046567A (fr) * 1973-07-30 1975-04-25
JPS50101604A (fr) * 1974-01-18 1975-08-12
JPS5146756A (en) * 1974-10-18 1976-04-21 Sumitomo Chemical Co Haiekino shorihoho
JPS5236575A (en) * 1975-09-19 1977-03-19 Fujisash Co Method for solidifying the sludge from paper manufacturing
JPS5237812A (en) * 1975-09-19 1977-03-24 Fuji Satsushi Kogyo Kk Method of solidifying paper making sludge
JPS5512853A (en) * 1978-07-10 1980-01-29 Heisaku Inagawa Production of board using paper making sludge
JPS58176159A (ja) * 1982-04-07 1983-10-15 日本セメント株式会社 非晶質ケイ酸カルシウム成形体の製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011073851A1 (fr) * 2009-12-16 2011-06-23 Universidad Tecnologica De Pereira Procédé pour fabriquer des matériaux de construction à partir de résidus cellulosiques

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