CN112408929A - Environment-friendly calcium silicate board produced based on slag powder and preparation method thereof - Google Patents
Environment-friendly calcium silicate board produced based on slag powder and preparation method thereof Download PDFInfo
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- CN112408929A CN112408929A CN202011227667.7A CN202011227667A CN112408929A CN 112408929 A CN112408929 A CN 112408929A CN 202011227667 A CN202011227667 A CN 202011227667A CN 112408929 A CN112408929 A CN 112408929A
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- 239000000843 powder Substances 0.000 title claims abstract description 80
- 239000000378 calcium silicate Substances 0.000 title claims abstract description 64
- 229910052918 calcium silicate Inorganic materials 0.000 title claims abstract description 64
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 239000002893 slag Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 47
- 239000002025 wood fiber Substances 0.000 claims abstract description 47
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 39
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 37
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 37
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 37
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 37
- 239000010453 quartz Substances 0.000 claims abstract description 33
- 238000004537 pulping Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000000967 suction filtration Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 238000005520 cutting process Methods 0.000 claims abstract description 3
- 238000000465 moulding Methods 0.000 claims abstract description 3
- 238000005303 weighing Methods 0.000 claims abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 32
- 239000002002 slurry Substances 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 229910052906 cristobalite Inorganic materials 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000011268 mixed slurry Substances 0.000 claims description 2
- 239000012763 reinforcing filler Substances 0.000 claims description 2
- 229910052682 stishovite Inorganic materials 0.000 claims description 2
- 229910052905 tridymite Inorganic materials 0.000 claims description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 27
- 239000000463 material Substances 0.000 abstract description 20
- 238000000746 purification Methods 0.000 abstract description 8
- 239000012779 reinforcing material Substances 0.000 abstract description 3
- 239000013589 supplement Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009776 industrial production Methods 0.000 description 4
- 239000002910 solid waste Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/024—Steam hardening, e.g. in an autoclave
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses an environment-friendly calcium silicate board produced based on slag powder, which is prepared from the following raw materials in parts by mass: 25-39 parts of slag powder, 27-41 parts of slaked lime, 20-26 parts of quartz powder and 8-14 parts of wood fiber. The preparation method comprises the following steps: weighing the raw materials according to a ratio, adding water into wood fibers for pulping, then adding the weighed slag powder, hydrated lime and quartz powder, uniformly mixing, pouring into a mold, performing suction filtration molding to prepare a wet blank, performing autoclaved curing after precuring, and naturally cooling, taking out of the kettle, drying and cutting after the autoclaved curing to obtain the environment-friendly calcium silicate board. The invention selects slag powder and quartz powder as siliceous materials, slaked lime as calcareous materials and wood fibers as reinforcing materials, and the raw materials supplement each other, so that the produced calcium silicate board has the advantages of density, breaking strength, heat conductivity coefficient and formaldehyde purification performance meeting the national standard, environmental protection, energy conservation and low cost, and is a novel building and industrial board with excellent performance.
Description
Technical Field
The invention relates to a preparation method of a calcium silicate board, in particular to an environment-friendly calcium silicate board produced based on slag powder and a preparation method thereof.
Background
The calcium silicate board is made up by using loose short fibre of inorganic mineral fibre or cellulose fibre as reinforcing material and using siliceous-calcareous material as main body cementing material through the processes of pulping, forming and adding high-temp. high-pressure saturated steam to accelerate curing reaction so as to form calcium silicate gel body. Because of its high strength, light weight, good machinability and incombustibility, it is widely used in ship bulkhead, suspended ceiling, non-load-bearing wall of building and other places with fire-proof requirements. Calcium silicate boards are used as novel green environment-friendly building materials and are widely applied to suspended ceilings, partition walls, decorations, furniture lining boards, billboard lining boards, ship partition boards, warehouse shed boards, network floors and the like. The present calcium silicate board is made up by using cement, lime and quartz powder as base material and adding a certain quantity of reinforcing fibre through a series of processes of making paper or pulp flow forming, pressurizing and high-temp. steam curing, etc., and is a new type of board material which can be extensively popularized in recent years in China.
China is a large country for industrial production, and the quantity of waste residues produced by industry every year is hundreds of billions of tons, and the solid wastes are accumulated all the year round, occupy a large amount of land and seriously pollute the environment. At present, the industrial solid wastes are mainly applied to the aspect of building materials as concrete admixtures, the utilization mode is single, and high-efficiency and high-value utilization is not achieved. And most industrial production waste residues contain a large amount of silicon and calcium substances, so that the raw material requirements of calcium silicate board production can be met, the industrial production waste residues can be used for preparing the calcium silicate board, and solid wastes are converted into effective resources, so that the production cost is reduced, the environmental pollution is reduced, and the resource utilization rate is improved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the environment-friendly calcium silicate board produced based on the slag powder and the preparation method thereof are provided, and certain industrial solid wastes are used as raw materials, so that the environmental pollution can be reduced, the resource utilization rate is improved, and the effects of protecting the environment, saving resources and reducing the production cost are achieved.
The technical scheme adopted by the invention for solving the technical problem is as follows:
an environment-friendly calcium silicate board produced based on slag powder is prepared from the following raw materials in parts by mass: 25-39 parts of slag powder, 27-41 parts of slaked lime, 20-26 parts of quartz powder and 8-14 parts of wood fiber.
The slaked lime mainly contains calcium hydroxide, Ca (OH)2The content is more than or equal to 95.0 percent, and the index requirement of industrial-grade hydrated lime is met.
The quartz powder mainly comprises silicon dioxide, the granularity is more than 200 meshes, the whiteness is more than or equal to 80.0 percent, and SiO2The content is more than or equal to 98.0 percent.
The wood fiber is industrial paper fiber, the whiteness is more than or equal to 83.0 percent, before the wood fiber is used, the paper needs to be effectively dissociated to achieve a good dispersion state, and the wood fiber is used as a calcium silicate board reinforcing filler.
The preparation method of the environment-friendly calcium silicate board produced based on the slag powder comprises the following steps:
(1) respectively weighing slag powder, hydrated lime, quartz powder and wood fiber according to the raw material ratio;
(2) placing the wood fibers weighed in the step (1) into a pulping machine, adding water and carrying out pulping treatment to enable the wood fibers to have good dispersibility, then adding the slag powder, the hydrated lime and the quartz powder weighed in the step (1) and uniformly mixing the slag powder, the hydrated lime and the quartz powder to prepare slurry for later use;
(3) pouring the obtained uniformly mixed slurry into a mold, preparing a wet blank by suction filtration molding, and pre-curing the wet blank for 1-3 h;
(4) putting the pre-cured wet blank into a steam curing kettle for steam curing, naturally cooling and discharging from the kettle after the steam curing is finished;
(5) and drying and cutting the calcium silicate board product after the calcium silicate board product is discharged from the kettle to obtain the environment-friendly calcium silicate board produced based on the slag powder.
In the step (4), the steam curing is carried out under the steam curing pressure of 0.6-1.2 MPa for 6-12 h.
In the step (5), the drying is carried out at the drying temperature of 80-110 ℃ for 12-36 h.
Compared with the prior art, the environment-friendly calcium silicate board and the preparation method thereof have the following beneficial effects:
1. the invention selects slag powder and quartz powder as siliceous materials, slaked lime as calcareous materials and wood fibers as reinforcing materials to prepare the calcium silicate board. The slag powder belongs to industrial production waste slag, and can be reasonably and effectively used for preparing the calcium silicate board, so that the pollution of the calcium silicate board to the environment is reduced, and the effects of saving resources and protecting the environment are achieved; the hydrated lime not only provides a calcium source, but also can neutralize harmful impurities in the slag powder, so that the harmful impurities are converted into inert substances, and the influence of the impurities on the performance of the formed calcium silicate board is avoided; the wood fiber can be used for connecting calcium silicate hydrate generated in the board to form a space net structure, so that the strength and toughness of the calcium silicate board are enhanced, the machining performance of the calcium silicate board is improved, and the application field of the calcium silicate board is enlarged.
2. The method selects the industrial waste residue (slag powder) as one of the raw materials for preparing the calcium silicate board, can effectively reduce the production cost, improves the utilization rate of resources, brings sufficient profit margin and market value for production enterprises, and has great development prospect.
3. The raw materials supplement each other, and the prepared calcium silicate board is environment-friendly, energy-saving and low in cost, and is a novel building and industrial board with excellent performance.
4. The density, the breaking strength, the heat conductivity coefficient and the formaldehyde purification performance of the calcium silicate board prepared and produced by the invention all meet the national building environment protection requirements.
Drawings
FIG. 1 is a flow chart of the preparation process of the environment-friendly calcium silicate board.
Detailed Description
The invention will be further explained and illustrated with reference to specific examples:
example 1
The environment-friendly calcium silicate board in the embodiment is prepared from the following materials in parts by weight: 33 parts of slag powder, 33 parts of slaked lime, 24 parts of quartz powder and 10 parts of wood fiber.
The preparation method of the environment-friendly calcium silicate board comprises the following steps:
(1) taking 10 parts of wood fiber, placing the wood fiber in a pulping machine, adding water for pulping treatment to enable the wood fiber to have good dispersibility, and preparing pulp for later use;
(2) adding 33 parts of slag powder, 33 parts of slaked lime and 24 parts of quartz powder into a pulping machine, and fully and uniformly mixing the slag powder, the slaked lime and the quartz powder with the wood fiber slurry;
(3) pouring the uniformly mixed materials into a forming die, preparing a wet blank in a suction filtration forming mode, and pre-curing the wet blank for 2 hours to ensure that the wet blank has certain strength and water content;
(4) putting the pre-cured wet blank into a steam curing kettle for steam curing, wherein the steam curing pressure is 1MPa, the steam curing temperature is 185 ℃, and the steam curing time is 10 hours;
(5) and after the steam curing is finished, taking out the plate, and placing the plate in an oven for drying treatment to obtain a finished plate.
The density, the breaking strength, the thermal conductivity and the formaldehyde purification performance of the calcium silicate board obtained in the embodiment are respectively tested, and the specific test results are shown in table 1.
Example 2
The environment-friendly calcium silicate board in the embodiment is prepared from the following materials in parts by weight: 25 parts of slag powder, 41 parts of hydrated lime, 24 parts of quartz powder and 10 parts of wood fiber.
The preparation method of the environment-friendly calcium silicate board comprises the following steps:
(1) taking 10 parts of wood fiber, putting the wood fiber in a pulping machine, adding water, and pulping to ensure that the wood fiber has good dispersibility, and preparing slurry for later use;
(2) adding 25 parts of slag powder, 41 parts of slaked lime and 24 parts of quartz powder into a pulping machine, and fully and uniformly mixing the slag powder, the slaked lime and the quartz powder with wood fiber slurry;
(3) pouring the uniformly mixed materials into a forming die, preparing a wet blank in a suction filtration forming mode, and pre-curing the wet blank for 2 hours to ensure that the wet blank has certain strength and water content;
(4) putting the pre-cured wet blank into a steam curing kettle for steam curing, wherein the steam curing pressure is 0.8MPa, the steam curing temperature is 175 ℃, and the steam curing time is 12 hours;
(5) and after the steam curing is finished, taking out the plate, and placing the plate in an oven for drying treatment to obtain a finished plate.
The density, the breaking strength, the thermal conductivity and the formaldehyde purification performance of the calcium silicate board obtained in the embodiment are respectively tested, and the specific test results are shown in table 1.
Example 3
The environment-friendly calcium silicate board in the embodiment is prepared from the following materials in parts by weight: 33 parts of slag powder, 33 parts of slaked lime, 22 parts of quartz powder and 12 parts of wood fiber.
The preparation method of the environment-friendly calcium silicate board comprises the following steps:
(1) taking 12 parts of wood fiber, putting the wood fiber into a pulping machine, adding water, and carrying out pulping treatment to ensure that the wood fiber has good dispersibility, and preparing slurry for later use;
(2) adding 33 parts of slag powder, 33 parts of slaked lime and 22 parts of quartz powder into a pulping machine, and fully and uniformly mixing the slag powder, the slaked lime and the quartz powder with wood fiber slurry;
(3) pouring the uniformly mixed materials into a forming die, preparing a wet blank in a suction filtration forming mode, and pre-curing the wet blank for 2 hours to ensure that the wet blank has certain strength and water content;
(4) putting the pre-cured wet blank into a steam curing kettle for steam curing, wherein the steam curing pressure is 1.0MPa, the steam curing temperature is 185 ℃, and the steam curing time is 10 hours;
(5) and after the steam curing is finished, taking out the plate, and placing the plate in an oven for drying treatment to obtain a finished plate.
The density, the breaking strength, the thermal conductivity and the formaldehyde purification performance of the calcium silicate board obtained in the embodiment are respectively tested, and the specific test results are shown in table 1.
Example 4
The environment-friendly calcium silicate board in the embodiment is prepared from the following materials in parts by weight: 33 parts of slag powder, 33 parts of slaked lime, 24 parts of quartz powder and 10 parts of wood fiber.
The preparation method of the environment-friendly calcium silicate board comprises the following steps:
(1) taking 10 parts of wood fiber, placing the wood fiber in a pulping machine, pulping to ensure that the wood fiber has good dispersibility, and preparing slurry for later use;
(2) adding 33 parts of slag powder, 33 parts of slaked lime and 24 parts of quartz powder into a pulping machine, and fully and uniformly mixing the slag powder, the slaked lime and the quartz powder with the wood fiber slurry;
(3) pouring the uniformly mixed materials into a forming die, preparing a wet blank in a suction filtration forming mode, and pre-curing the wet blank for 2 hours to ensure that the wet blank has certain strength and water content;
(4) putting the pre-cured wet blank into a steam curing kettle for steam curing, wherein the steam curing pressure is 1.2MPa, the steam curing temperature is 195 ℃, and the steam curing time is 6 hours;
(5) and after the steam curing is finished, taking out the plate, and placing the plate in an oven for drying treatment to obtain a finished plate.
The density, the breaking strength, the thermal conductivity and the formaldehyde purification performance of the calcium silicate board obtained in the embodiment are respectively tested, and the specific test results are shown in table 1.
Example 5
The environment-friendly calcium silicate board in the embodiment is prepared from the following materials in parts by weight: 39 parts of slag powder, 27 parts of slaked lime, 26 parts of quartz powder and 8 parts of wood fiber.
The preparation method of the environment-friendly calcium silicate board comprises the following steps:
(1) taking 8 parts of wood fiber, putting the wood fiber into a pulping machine, adding water, and carrying out pulping treatment to ensure that the wood fiber has good dispersibility, and preparing slurry for later use;
(2) adding 39 parts of slag powder, 27 parts of slaked lime and 26 parts of quartz powder into a pulping machine, and fully and uniformly mixing the slag powder, the slaked lime and the quartz powder with wood fiber slurry;
(3) pouring the uniformly mixed materials into a forming die, preparing a wet blank in a suction filtration forming mode, and pre-curing the wet blank for 2 hours to ensure that the wet blank has certain strength and water content;
(4) putting the pre-cured wet blank into a steam curing kettle for steam curing, wherein the steam curing pressure is 1.0MPa, the steam curing temperature is 185 ℃, and the steam curing time is 8 hours;
(5) and after the steam curing is finished, taking out the plate, and placing the plate in an oven for drying treatment to obtain a finished plate.
The density, the breaking strength, the thermal conductivity and the formaldehyde purification performance of the calcium silicate board obtained in the embodiment are respectively tested, and the specific test results are shown in table 1.
Example 6
The environment-friendly calcium silicate board in the embodiment is prepared from the following materials in parts by weight: 39 parts of slag powder, 27 parts of slaked lime, 20 parts of quartz powder and 14 parts of wood fiber.
The preparation method of the environment-friendly calcium silicate board comprises the following steps:
(1) taking 14 parts of wood fiber, putting the wood fiber into a pulping machine, adding water, and carrying out pulping treatment to ensure that the wood fiber has good dispersibility, and preparing slurry for later use;
(2) adding 39 parts of slag powder, 27 parts of slaked lime and 20 parts of quartz powder into a pulping machine, and fully and uniformly mixing the slag powder, the slaked lime and the quartz powder with wood fiber slurry;
(3) pouring the uniformly mixed materials into a forming die, preparing a wet blank in a suction filtration forming mode, and pre-curing the wet blank for 2 hours to ensure that the wet blank has certain strength and water content;
(4) putting the pre-cured wet blank into a steam curing kettle for steam curing, wherein the steam curing pressure is 0.6MPa, the steam curing temperature is 175 ℃, and the steam curing time is 10 hours;
(5) and after the steam curing is finished, taking out the plate, and placing the plate in an oven for drying treatment to obtain a finished plate.
The density, the breaking strength, the thermal conductivity and the formaldehyde adsorption performance of the calcium silicate board obtained in the embodiment are respectively tested, and specific test results are shown in table 1.
Table 1 table of technical index test results of the eco-friendly calcium silicate boards prepared in examples 1 to 6
From table 1, it can be derived: the raw materials supplement each other, and the prepared calcium silicate board has the advantages of meeting the national building environmental protection requirements in density, breaking strength, heat conductivity coefficient and formaldehyde purification performance, being environment-friendly, energy-saving and low in cost, and being a novel building and industrial board with excellent performance.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The environment-friendly calcium silicate board produced based on slag powder is characterized by being prepared from the following raw materials in parts by mass: 25-39 parts of slag powder, 27-41 parts of slaked lime, 20-26 parts of quartz powder and 8-14 parts of wood fiber.
2. The eco-friendly calcium silicate board produced based on slag powder as claimed in claim 1, wherein the hydrated lime has calcium hydroxide, Ca (OH) as a main component2The content is more than or equal to 95.0 percent, and the index requirement of industrial-grade hydrated lime is met.
3. The environment-friendly calcium silicate board produced based on slag powder according to claim 1, wherein the quartz powder mainly comprises silicon dioxide, the granularity is more than or equal to 200 meshes, the whiteness is more than or equal to 80.0%, and SiO2The content is more than or equal to 98.0 percent.
4. The environment-friendly calcium silicate board produced based on slag powder according to claim 1, wherein the wood fiber is industrial paper fiber, the whiteness is not less than 83.0%, and before use, the paper needs to be effectively dissociated to achieve a good dispersion state and is used as a calcium silicate board reinforcing filler.
5. The preparation method of the environment-friendly calcium silicate board produced based on the slag powder as claimed in any one of claims 1 to 4 is characterized by comprising the following steps:
(1) respectively weighing slag powder, hydrated lime, quartz powder and wood fiber according to the raw material ratio;
(2) placing the wood fibers weighed in the step (1) into a pulping machine, adding water and carrying out pulping treatment to enable the wood fibers to have good dispersibility, then adding the slag powder, the hydrated lime and the quartz powder weighed in the step (1) and uniformly mixing the slag powder, the hydrated lime and the quartz powder to prepare slurry for later use;
(3) pouring the obtained uniformly mixed slurry into a mold, preparing a wet blank by suction filtration molding, and pre-curing the wet blank for 1-3 h;
(4) putting the pre-cured wet blank into a steam curing kettle for steam curing, naturally cooling and discharging from the kettle after the steam curing is finished;
(5) and drying and cutting the calcium silicate board product after the calcium silicate board product is discharged from the kettle to obtain the environment-friendly calcium silicate board produced based on the slag powder.
6. The method for preparing an environmentally friendly calcium silicate board according to claim 5, wherein: in the step (4), the steam curing is carried out under the steam curing pressure of 0.6-1.2 MPa for 6-12 h.
7. The method for preparing an environmentally friendly calcium silicate board according to claim 5, wherein: in the step (5), the drying is carried out at the drying temperature of 80-110 ℃ for 12-36 h.
Priority Applications (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116063055A (en) * | 2023-03-22 | 2023-05-05 | 山东奥科金属制品集团有限公司 | Light calcium silicate board |
| CN117263634A (en) * | 2023-10-14 | 2023-12-22 | 石家庄埃特尼特板业有限公司 | Preparation method of calcium silicate board and calcium silicate board |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158292A (en) * | 1996-02-26 | 1997-09-03 | 福建省建明建材集团三明新型建材总厂 | Flowing prodn. tech. of calcium silicate sheet |
| JPH11349370A (en) * | 1998-06-03 | 1999-12-21 | Tokai Kogyo Kk | Production of calcium silicate-based solidified substance |
| JP2016222489A (en) * | 2015-05-29 | 2016-12-28 | 三菱マテリアル株式会社 | Lightweight calcium silicate plate and method of producing the same |
| CN107254810A (en) * | 2017-06-13 | 2017-10-17 | 安徽联塑侨裕新型建材有限公司 | A kind of preparation technology of calcium silicate board |
| CN109025049A (en) * | 2018-09-15 | 2018-12-18 | 四川信衡新型材料科技有限公司 | A kind of combined wall board and its production technology |
| CN109160798A (en) * | 2018-11-02 | 2019-01-08 | 肇庆三乐集成房屋制造有限公司 | A kind of environmental protection calcium silicate board and preparation method thereof |
| CN110271082A (en) * | 2019-03-26 | 2019-09-24 | 台荣建材(湖州)有限公司 | A kind of manufacture craft for the calcium silicate board that fire line is good |
-
2020
- 2020-11-04 CN CN202011227667.7A patent/CN112408929A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158292A (en) * | 1996-02-26 | 1997-09-03 | 福建省建明建材集团三明新型建材总厂 | Flowing prodn. tech. of calcium silicate sheet |
| JPH11349370A (en) * | 1998-06-03 | 1999-12-21 | Tokai Kogyo Kk | Production of calcium silicate-based solidified substance |
| JP2016222489A (en) * | 2015-05-29 | 2016-12-28 | 三菱マテリアル株式会社 | Lightweight calcium silicate plate and method of producing the same |
| CN107254810A (en) * | 2017-06-13 | 2017-10-17 | 安徽联塑侨裕新型建材有限公司 | A kind of preparation technology of calcium silicate board |
| CN109025049A (en) * | 2018-09-15 | 2018-12-18 | 四川信衡新型材料科技有限公司 | A kind of combined wall board and its production technology |
| CN109160798A (en) * | 2018-11-02 | 2019-01-08 | 肇庆三乐集成房屋制造有限公司 | A kind of environmental protection calcium silicate board and preparation method thereof |
| CN110271082A (en) * | 2019-03-26 | 2019-09-24 | 台荣建材(湖州)有限公司 | A kind of manufacture craft for the calcium silicate board that fire line is good |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116063055A (en) * | 2023-03-22 | 2023-05-05 | 山东奥科金属制品集团有限公司 | Light calcium silicate board |
| CN116063055B (en) * | 2023-03-22 | 2023-08-18 | 山东奥科金属制品集团有限公司 | Light calcium silicate board |
| CN117263634A (en) * | 2023-10-14 | 2023-12-22 | 石家庄埃特尼特板业有限公司 | Preparation method of calcium silicate board and calcium silicate board |
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Application publication date: 20210226 |