CN111646778A - Decoration-free lithium slag-based heat-insulation board and preparation method thereof - Google Patents

Decoration-free lithium slag-based heat-insulation board and preparation method thereof Download PDF

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Publication number
CN111646778A
CN111646778A CN202010431014.4A CN202010431014A CN111646778A CN 111646778 A CN111646778 A CN 111646778A CN 202010431014 A CN202010431014 A CN 202010431014A CN 111646778 A CN111646778 A CN 111646778A
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China
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parts
lithium slag
slag
decoration
based heat
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Inventor
陈�胜
李保亮
陈辉
陈星宇
陈育红
胡其扬
黄昉
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Huai'an Boyan Civil Engineering Science Research Institute Co ltd
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Huai'an Boyan Civil Engineering Science Research Institute Co ltd
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Priority to CN202010431014.4A priority Critical patent/CN111646778A/en
Publication of CN111646778A publication Critical patent/CN111646778A/en
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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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
    • B28B1/503—Moulds therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
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Abstract

The invention relates to an decoration-free lithium slag-based heat-insulation board which comprises the following raw materials in parts by weight on a dry basis: 30-50 parts of lithium slag, 20-40 parts of zeolite, 1-10 parts of aluminum value correcting agent, 1-10 parts of silicon value correcting agent, 1-5 parts of binder, 5-15 parts of foaming agent, 1-5 parts of cosolvent and 1-10 parts of coloring agent. The preparation method comprises the following steps: carrying out wet grinding and drying on the lithium slag and the foaming agent with water respectively, sieving the lithium slag and the foaming agent with a 120-200-mesh sieve, uniformly mixing the raw materials according to the dry basis metering ratio, then forming the mixture in a printing grinding tool under the pressure of 1-6 MPa to obtain a blank, sintering the blank at the high temperature of 800-1000 ℃ for 30-60 min, and cooling the blank to the room temperature to obtain the lithium-ion battery. The invention effectively solves the problems of high water content, low activity, complex element components and the like of the lithium slag in the process of preparing the common plate in the prior art, and the prepared lithium slag-based heat-insulating plate has good compressive strength, excellent fire resistance and low heat conductivity coefficient.

Description

Decoration-free lithium slag-based heat-insulation board and preparation method thereof
Technical Field
The invention relates to an decoration-free lithium slag-based heat-insulating plate and a preparation method thereof, belonging to the technical field of building materials.
Background
The lithium slag is industrial waste slag generated in the process of producing lithium carbonate by a sulfuric acid method, is milk white in appearance, and is a volcanic ash material with relatively high early activity. Currently, about 10 tons of lithium slag are generated when 1 ton of lithium carbonate is produced, so that the byproduct quantity of the lithium slag is large. The lithium slag powder is fine, dust pollution is caused to the surrounding environment by discharging and stacking, and a large amount of land is occupied, so that the lithium slag powder needs to be recycled.
Because of SiO in the lithium slag2And Al2O3The content is higher, so that the mineral admixture can be used as a mineral admixture for concrete. However, the main mineral phases of the lithium slag are spodumene, gypsum and quartz, wherein the spodumene and the quartz belong to inert phases, and the content of the spodumene and the quartz accounts for 70-80%, so that the activity exertion of the lithium slag in concrete is influenced; the large amount of gypsum in the lithium slag can also cause delayed ettringite generation in the concrete, and meanwhile, when the lithium slag is applied to cement concrete, the problems of high water content, water demand and the like exist. Therefore, how to scientifically and effectively utilize the lithium slag with high added value is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to solve the problems of high water content, low activity, complex element components and the like of lithium slag in the process of preparing a common plate in the prior art, and provides an decoration-free lithium slag-based heat-insulating plate.
The invention also aims to provide a preparation method of the decoration-free lithium slag-based heat insulation board.
Technical scheme
The decoration-free lithium slag-based heat insulation board comprises the following raw materials in parts by weight on a dry basis: 30-50 parts of lithium slag, 20-40 parts of zeolite, 1-10 parts of aluminum value correcting agent, 1-10 parts of silicon value correcting agent, 1-5 parts of binder, 5-15 parts of foaming agent, 1-5 parts of cosolvent and 1-10 parts of coloring agent.
Further, the zeolite is a mixture of phillipsite and mordenite.
Further, the aluminum value correcting agent is bauxite.
Further, the silicon value correcting agent is sea sand.
Further, the binder is one or a mixture of more than two of ortho-benzene type, meta-benzene type, para-benzene type, bisphenol A type and vinyl ester type unsaturated polyester resin in any proportion.
Furthermore, the foaming agent is a composition formed by shells, titanium white slag and waste stone powder of artificial marble in a weight ratio of (5-30) to (50-90).
Further, the cosolvent is one of talc or fluorite or a mixture of the talc and the fluorite in any proportion.
Further, the coloring agent is one or a mixture of more than two of nickel-iron slag, ferrochromium slag, ferromanganese slag, copper slag, cobalt blue, cobalt white or wolframite in any proportion, and the fineness of the coloring agent is below 400 meshes.
The preparation method of the decoration-free lithium slag-based heat insulation board comprises the following steps:
(1) carrying out wet grinding and drying on the lithium slag and the foaming agent with water respectively, and sieving by using a 120-200-mesh sieve for later use;
(2) uniformly mixing lithium slag, zeolite, an aluminum value correcting agent, a silicon value correcting agent, a binder, a foaming agent, a cosolvent and a coloring agent according to a dry basis metering ratio, and then forming in a printing grinding tool under the pressure condition of 1-6 MPa to obtain a blank;
(3) and sintering the blank at the high temperature of 800-1000 ℃ for 30-60 min, and then cooling to room temperature to obtain the decoration-free lithium slag-based heat-insulating board.
The invention has the beneficial effects that: compared with the prior art, the invention has the following advantages:
1) the moisture content of the lithium slag is high, and the lithium slag is subjected to wet grinding, so that the grinding efficiency of the lithium slag is improved, and the problem of high moisture content of the lithium slag is solved; in addition, the main mineral in the lithium slag is spodumene, which contains a large amount of silicon oxide and aluminum oxide, the activity is low at normal temperature, the reaction can be fully performed at high temperature, and meanwhile, the lithium slag contains more Na and K elements, gypsum and the like, and the calcining problem of the lithium slag heat-insulating plate can be reduced due to the existence of the materials.
2) The phillipsite, the mordenite, the sea sand and the like can supplement and adjust the proportion of silicon oxide and aluminum oxide in the lithium slag heat-insulating plate, and the sea sand is effectively utilized.
3) Titanium white slag and waste stone powder of artificial marble are high-moisture waste, the titanium white slag and the waste stone powder are effectively utilized through wet grinding, high-temperature calcination and other modes, a foaming effect is achieved, especially, the waste stone powder of the artificial marble contains a large amount of organic resin which is difficult to utilize under the normal temperature condition, and the organic resin can be burnt out to form holes for heat insulation boards through high-temperature calcination, so that the problem of effectively utilizing the organic resin in the artificial marble stone powder is solved.
4) The coloring agent and the printing mold are used, so that the color and the pattern of the insulation board are increased, and the decorative effect of the insulation board is improved.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
Example 1
The decoration-free lithium slag-based heat insulation board comprises the following raw materials in parts by weight on a dry basis: 50 parts of lithium slag, 20 parts of zeolite (10 parts of phillipsite and 10 parts of mordenite), 5 parts of an aluminum value correcting agent (bauxite), 5 parts of a silicon value correcting agent (sea sand), 5 parts of a binder, 5 parts of a foaming agent, 5 parts of a cosolvent and 5 parts of a coloring agent.
The binder is o-benzene type unsaturated polyester resin.
The foaming agent is a composition formed by shells, titanium white slag and waste stone powder of artificial marble in a weight ratio of 30:20: 50.
The cosolvent is talc.
The coloring agent is nickel-iron slag with fineness below 400 meshes.
The preparation method of the decoration-free lithium slag-based heat insulation board comprises the following steps:
(1) carrying out wet grinding and drying on the lithium slag and the foaming agent with water respectively, and sieving with a 120-mesh sieve for later use;
(2) uniformly mixing lithium slag, zeolite, an aluminum value correcting agent, a silicon value correcting agent, a binder, a foaming agent, a cosolvent and a coloring agent according to a dry basis metering ratio, and then forming in a printing grinding tool under the pressure of 6MPa to obtain a blank;
(3) and sintering the blank at the high temperature of 800 ℃ for 60min, and cooling to room temperature to obtain the decoration-free lithium slag-based heat-insulating plate.
Example 2
The decoration-free lithium slag-based heat insulation board comprises the following raw materials in parts by weight on a dry basis: 30 parts of lithium slag, 40 parts of zeolite (20 parts of phillipsite and 20 parts of mordenite), 1 part of aluminum value correcting agent (bauxite), 1 part of silicon value correcting agent (sea sand), 1 part of binder, 15 parts of foaming agent, 5 parts of cosolvent and 7 parts of coloring agent.
The binder is m-benzene unsaturated polyester resin.
The foaming agent is a composition formed by shells, titanium white slag and waste stone powder of artificial marble in a weight ratio of 5:5: 90.
The cosolvent is fluorite.
The coloring agent is nickel-iron slag, ferrochromium slag, ferromanganese slag and copper slag, the weight ratio of the coloring agent to the copper slag is 1:1:1:1, and the fineness of the coloring agent is 500 meshes.
The preparation method of the decoration-free lithium slag-based heat insulation board comprises the following steps:
(1) carrying out wet grinding and drying on the lithium slag and the foaming agent with water respectively, and sieving with a 200-mesh sieve for later use;
(2) uniformly mixing lithium slag, zeolite, an aluminum value correcting agent, a silicon value correcting agent, a binder, a foaming agent, a cosolvent and a coloring agent according to a dry basis metering ratio, and then forming in a printing grinding tool under the pressure condition of 1MPa to obtain a blank;
(3) and sintering the blank at the high temperature of 1000 ℃ for 30min, and cooling to room temperature to obtain the decoration-free lithium slag-based heat-insulating plate.
Example 3
The decoration-free lithium slag-based heat insulation board comprises the following raw materials in parts by weight on a dry basis: 50 parts of lithium slag, 30 parts of zeolite (15 parts of phillipsite and 15 parts of mordenite), 1 part of aluminum value correcting agent (bauxite), 10 parts of silicon value correcting agent (sea sand), 1 part of binder, 5 parts of foaming agent, 1 part of cosolvent and 2 parts of coloring agent.
The binder is p-benzene type unsaturated polyester resin.
The foaming agent is a composition formed by shells, titanium white slag and waste stone powder of artificial marble in a weight ratio of 20:30: 50.
The cosolvent is a mixture of talc and fluorite in a weight ratio of 2: 3.
The coloring agent is cobalt blue with the fineness of 400 meshes.
The preparation method of the decoration-free lithium slag-based heat insulation board comprises the following steps:
(1) carrying out wet grinding and drying on the lithium slag and the foaming agent with water respectively, and sieving with a 150-mesh sieve for later use;
(2) uniformly mixing lithium slag, zeolite, an aluminum value correcting agent, a silicon value correcting agent, a binder, a foaming agent, a cosolvent and a coloring agent according to a dry basis metering ratio, and then forming in a printing grinding tool under the pressure of 3MPa to obtain a blank;
(3) and sintering the blank at the high temperature of 900 ℃ for 60min, and cooling to room temperature to obtain the decoration-free lithium slag-based heat-insulating board.
Example 4
The decoration-free lithium slag-based heat insulation board comprises the following raw materials in parts by weight on a dry basis: 40 parts of lithium slag, 20 parts of zeolite (10 parts of phillipsite and 10 parts of mordenite), 4 parts of aluminum value correcting agent (bauxite), 3 parts of silicon value correcting agent (sea sand), 3 parts of binder, 15 parts of foaming agent, 5 parts of cosolvent and 10 parts of coloring agent.
The adhesive is a mixture of bisphenol A type and vinyl ester type unsaturated polyester resin, wherein the weight ratio of the bisphenol A type to the vinyl ester type unsaturated polyester resin is 3: 2.
The foaming agent is a composition formed by shells, titanium white slag and waste stone powder of artificial marble in a weight ratio of 10:10: 80.
The cosolvent is talc.
The coloring agent is cobalt bloom, and the fineness of the coloring agent is 400 meshes.
The preparation method of the decoration-free lithium slag-based heat insulation board comprises the following steps:
(1) carrying out wet grinding and drying on the lithium slag and the foaming agent with water respectively, and sieving with a 120-mesh sieve for later use;
(2) uniformly mixing lithium slag, zeolite, an aluminum value correcting agent, a silicon value correcting agent, a binder, a foaming agent, a cosolvent and a coloring agent according to a dry basis metering ratio, and then forming in a printing grinding tool under the pressure of 4MPa to obtain a blank;
(3) and sintering the blank at the high temperature of 1000 ℃ for 60min, and cooling to room temperature to obtain the decoration-free lithium slag-based heat-insulating plate.
Example 5
The decoration-free lithium slag-based heat insulation board comprises the following raw materials in parts by weight on a dry basis: 30 parts of lithium slag, 40 parts of zeolite (20 parts of phillipsite and 20 parts of mordenite), 10 parts of aluminum value correcting agent (bauxite), 10 parts of silicon value correcting agent (sea sand), 2 parts of binder, 3 parts of foaming agent, 1 part of cosolvent and 4 parts of coloring agent.
The binder is vinyl ester type unsaturated polyester resin.
The foaming agent is a composition formed by shells, titanium white slag and waste stone powder of artificial marble in a weight ratio of 20:20: 60.
The cosolvent is fluorite.
The coloring agent is wolframite with the fineness of 400 meshes.
The preparation method of the decoration-free lithium slag-based heat insulation board comprises the following steps:
(1) carrying out wet grinding and drying on the lithium slag and the foaming agent with water respectively, and sieving with a 200-mesh sieve for later use;
(2) uniformly mixing lithium slag, zeolite, an aluminum value correcting agent, a silicon value correcting agent, a binder, a foaming agent, a cosolvent and a coloring agent according to a dry basis metering ratio, and then forming in a printing grinding tool under the pressure of 5MPa to obtain a blank;
(3) and sintering the blank at the high temperature of 1000 ℃ for 60min, and cooling to room temperature to obtain the decoration-free lithium slag-based heat-insulating plate.
And (3) performance testing:
the decoration-free lithium slag-based heat-insulating board prepared in the examples 1 to 5 is subjected to tests on compressive strength, fire resistance, combustion performance and heat conductivity coefficient, wherein the compressive strength is performed according to GB/T8813-2008 'determination of compression performance of rigid foam plastic', the heat conductivity coefficient is performed according to GB/T10801.1-2002 'molded polystyrene foam plastic for heat insulation', the combustion performance is classified according to a classification method in GB8624-2012 'classification of combustion performance of building materials and products', and the test results are shown in Table 1 according to GB/T8626-2007 'method for flammability test of building materials':
TABLE 1
Figure BDA0002500521030000051
As can be seen from the test results in Table 1, the decoration-free lithium slag-based heat-insulating board prepared by the embodiment of the invention has the advantages of good compressive strength, excellent fire resistance and low heat conductivity coefficient.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The decoration-free lithium slag-based heat insulation board is characterized by comprising the following raw materials in parts by weight on a dry basis: 30-50 parts of lithium slag, 20-40 parts of zeolite, 1-10 parts of aluminum value correcting agent, 1-10 parts of silicon value correcting agent, 1-5 parts of binder, 5-15 parts of foaming agent, 1-5 parts of cosolvent and 1-10 parts of coloring agent.
2. The decoration-free lithium slag-based thermal insulation board as claimed in claim 1, wherein the zeolite is a mixture of phillipsite and mordenite.
3. The decoration-free lithium slag-based thermal insulation board as claimed in claim 1, wherein the aluminum value corrector is bauxite.
4. The decoration-free lithium slag-based heat insulation board as claimed in claim 1, wherein the silicon value correcting agent is sea sand.
5. The decoration-free lithium slag-based heat-insulating board as claimed in claim 1, wherein the binder is one or a mixture of more than two of unsaturated polyester resins of ortho-benzene type, meta-benzene type, para-benzene type, bisphenol A type and vinyl ester type in any proportion.
6. The decoration-free lithium slag-based heat-insulating board as claimed in claim 1, wherein the foaming agent is a composition formed by shells, titanium white slag and waste stone powder of artificial marble in a weight ratio of (5-30): (50-90).
7. The decoration-free lithium slag-based heat-insulating plate material as claimed in claim 1, wherein the cosolvent is one of talc and fluorite or a mixture of the talc and the fluorite in any proportion.
8. The decoration-free lithium slag-based heat-insulating plate as claimed in any one of claims 1 to 7, wherein the coloring agent is one or a mixture of more than two of nickel-iron slag, chromium-iron slag, manganese-iron slag, copper slag, cobalt blue, cobalt white or wolframite in any proportion, and the fineness of the coloring agent is below 400 meshes.
9. The preparation method of the decoration-free lithium slag-based heat insulation board as claimed in any one of claims 1 to 8, is characterized by comprising the following steps:
(1) carrying out wet grinding and drying on the lithium slag and the foaming agent with water respectively, and sieving by using a 120-200-mesh sieve for later use;
(2) uniformly mixing lithium slag, zeolite, an aluminum value correcting agent, a silicon value correcting agent, a binder, a foaming agent, a cosolvent and a coloring agent according to a dry basis metering ratio, and then forming in a printing grinding tool under the pressure condition of 1-6 MPa to obtain a blank;
(3) and sintering the blank at the high temperature of 800-1000 ℃ for 30-60 min, and then cooling to room temperature to obtain the decoration-free lithium slag-based heat-insulating board.
CN202010431014.4A 2020-05-20 2020-05-20 Decoration-free lithium slag-based heat-insulation board and preparation method thereof Withdrawn CN111646778A (en)

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