CN114736039A - Waste sagger tundish coating and using method - Google Patents
Waste sagger tundish coating and using method Download PDFInfo
- Publication number
- CN114736039A CN114736039A CN202210463663.1A CN202210463663A CN114736039A CN 114736039 A CN114736039 A CN 114736039A CN 202210463663 A CN202210463663 A CN 202210463663A CN 114736039 A CN114736039 A CN 114736039A
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- CN
- China
- Prior art keywords
- waste
- tundish
- sagger
- coating material
- waste sagger
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5037—Clay, Kaolin
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/87—Ceramics
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a waste sagger tundish coating material and a using method thereof. The invention achieves the purpose of preparing the tundish coating material by using the waste saggar, and achieves the effect and the purpose of utilizing the waste saggar in a full-value, high-value and harmless manner; the low-melting-point materials in the waste saggars have the effects of fast sintering and short baking time, and the phases in the waste saggar materials used by the invention are mainly MgO particles and magnesia-alumina spinel (or mullite and Al) which are subjected to homogeneous multiple sintering (burned to be dead)2O3Particles), the magnesia-alumina spinel has better thermal shock resistance and mechanical impact resistance than the traditional forsterite, and the mullite has better thermal shock resistance and mechanical impact resistance than the traditional high-alumina or corundum. The service life of the invention is slightly longer than that of the traditional coating material made of the same material. The invention has low costThe method saves resources, and has positive significance in the aspects of economy, environmental protection, society and the like for reducing the stockpiling land of the waste saggars, occupying facilities or reducing other negative environmental protection effects.
Description
Technical Field
The invention belongs to the technical field of comprehensive utilization of waste resources, and particularly relates to a tundish coating material for a waste sagger and a using method of the tundish coating material.
Background
At present, in a waste sagger in the sintering process for preparing electrode materials of lithium batteries such as lithium iron phosphate, mullite-combined high-alumina materials and magnesium-aluminum spinel-combined magnesium materials are mainly used, the content of MgO in the sagger combined with magnesium-aluminum spinel is up to more than 65%, and MgO and Al are mixed2O3The total content of the magnesia sagger material is higher than 90 percent, and the mullite is combined with the Al in the high-alumina2O3The content is as high as more than 75 percent, but the saggars discarded by the sintering of the lithium ion battery electrode materials contain soluble salts (phosphorus and lithium) and heavy metal ions such as cobalt, and are stored in a landfill mode and stacked in the open airIf the tundish alkaline coating material which can be used for harmlessly utilizing the full value and high value of the waste saggars can be invented, the tundish alkaline coating material has positive significance in the aspects of economy, environmental protection, society and the like on saving the forsterite consumption of the tundish alkaline coating material, reducing the stockpiled land of the waste saggars or occupied facilities and reducing other negative environmental protection effects.
Disclosure of Invention
The invention aims to: in view of the above-mentioned circumstances, the present invention provides a tundish coating material for a waste sagger, which can be used to make full-value, high-value and harmless use of the waste sagger, and a method for using the same.
The technical scheme of the invention is as follows: the tundish coating material comprises a waste sagger material and a plasticizing material, wherein the tundish coating material is prepared by crushing, homogenizing and mixing the waste sagger and the plasticizing material serving as raw materials, the waste sagger material is waste sagger section sand which is formed by crushing and screening the waste sagger and has the granularity of 1-2 mm, the content of 25-30% of the waste sagger section sand, the content of 40-50% of the waste sagger section sand, and the balance of the waste sagger section sand, the granularity of the plasticizing material is not more than 0.075mm, MgO and Al in the waste sagger section sand2O3The total content is more than 85 percent, the mass content of the plasticizing material in the tundish coating is not more than 8 percent, the compressive strength of the waste sagger tundish coating is more than 8MPa, and the refractoriness is more than 1500 ℃.
Al in the waste sagger section sand2O3The content is not less than 75%.
The plasticizing material is one or more than one of magnesite powder and bentonite powder, and the granularity of the magnesite powder and the bentonite powder is not more than 0.075 mm.
The method for applying the waste sagger tundish coating material comprises the following steps:
the method comprises the following steps: crushing and screening the waste sagger to prepare waste sagger section sand;
step two: homogenizing and mixing the waste sagger section sand and the plasticizing material to prepare a powdery tundish coating material;
step three: mixing the powdery tundish coating material with a proper amount of transmitter water to form a wet coating material with proper plasticity and slump;
step four: and coating the wet coating material on the inner liner of the tundish, and baking for more than 4 hours at the temperature of 650-850 ℃.
The beneficial effects of the invention are: the invention achieves the purpose of preparing the tundish coating material by using the waste saggars, and achieves the effects and the purpose of utilizing the waste saggars in a full-value, high-value and harmless manner; the low-melting-point material in the waste sagger has the effects of fast sintering, short baking time and prolonged service life, and the invention also has the characteristics of low cost and resource recycling.
The specific implementation mode is as follows:
the following further describes the embodiments of the present invention in detail.
The tundish coating material comprises a waste sagger material and a plasticizing material, wherein the tundish coating material is prepared by crushing, homogenizing and mixing the waste sagger and the plasticizing material serving as raw materials, the waste sagger material is waste sagger section sand which is formed by crushing and screening the waste sagger and has the granularity of 1-2 mm, the content of 40-50% of 0.35-1.0 mm and the balance of less than 0.35mm, the granularity of the plasticizing material is not more than 0.075mm, MgO and Al in the waste sagger section sand2O3The total content is more than 85 percent, the mass content of the plasticizing material in the tundish coating is not more than 8 percent, the compressive strength of the waste sagger tundish coating is more than 8MPa, and the refractoriness is more than 1500 ℃.
Al in the waste sagger section sand2O3The content is not less than 75%.
The plasticizing material is one or more than one of magnesite powder and bentonite powder, and the granularity of the magnesite powder and the bentonite powder is not more than 0.075 mm.
The method for applying the waste sagger tundish coating material comprises the following steps:
the method comprises the following steps: crushing and screening the waste sagger to prepare waste sagger section sand;
step two: homogenizing and mixing the waste sagger section sand and the plasticizing material to prepare a powdery tundish coating material;
step three: mixing the powdery tundish coating material with a proper amount of transmitter water to form a wet coating material with proper plasticity and slump;
step four: and coating the wet coating material on the inner liner of the tundish, and baking for more than 4 hours at the temperature of 650-850 ℃.
The first embodiment is as follows: the invention relates to a method for preparing converter repairing mass by using waste saggars for 100t tundish alkaline coating, wherein the waste saggars are magnesium aluminate spinel combined magnesium saggars, and MgO and Al in the magnesium saggars2O3The sum of the contents is higher than 92 percent, and the MgO content is higher than 70 percent; the plasticizing material is light-burned magnesia sand powder, the fineness of the light-burned magnesia sand powder is not more than 0.075, the crushed and screened waste sagger material has the granularity components of 25% of 1-2 mm, 40% of 0.35-1.0 mm and the balance of waste sagger section sand with the granularity of less than 0.35mm, and the mass content of the light-burned magnesia sand powder in the tundish alkaline coating is 5%.
In the first embodiment, the method used by the invention comprises the following steps:
the method comprises the following steps: crushing and screening the waste sagger to prepare waste sagger section sand;
step two: homogenizing and mixing the waste sagger section sand and the light-burned magnesia sand powder to prepare a powdery tundish alkaline coating material;
step three: mixing the powdery tundish alkaline coating material with a proper amount of transmitter water to form a wet coating material with proper plasticity and slump;
step four: the wet coating is coated on the inner lining of the tundish and is baked for 6 hours at the temperature of 650-850 ℃, the low-melting-point materials in the waste sagger used in the invention accelerate the sintering and baking process (the traditional alkaline tundish coating is generally baked for 8-12 hours), in addition, the phases in the waste sagger materials used in the invention are mainly homogenized multiple sintering (burned and burned) MgO particles, magnesia alumina spinel and magnesia alumina spinel, and compared with the traditional forsterite, the thermal shock resistance and the mechanical impact resistance of the magnesium aluminate spinel are superior, and the service life of the magnesium aluminate spinel basic coating is slightly longer than that of the traditional forsterite basic coating.
The compressive strength of the alkaline coating of the tundish of the first waste sagger of the embodiment is more than 8MPa, and the refractoriness is more than 1540 ℃.
Example two: the invention relates to a method for preparing converter repairing mass by using waste saggars for 100t tundish alkaline coating, wherein the waste saggars are formed by combining mullite and high-alumina saggars, and the mullite and Al in the magnesium saggars2O3The total content of Al is 91%2O3The content is 76%; the plasticizing material is bentonite powder, the fineness of the bentonite powder is not more than 0.075, the crushed and screened waste sagger material has the granularity of 30% of 1-2 mm, 40% of 0.35-1.0 mm and the balance of waste sagger section sand with the granularity of less than 0.35mm, and the mass content of the bentonite powder in the tundish alkaline coating material is 5%.
In the second embodiment, the method used in the present invention is:
the method comprises the following steps: crushing and screening the waste sagger to prepare waste sagger section sand;
step two: homogenizing and mixing the waste sagger section sand and the bentonite powder to prepare a powdery tundish (acid-neutral) coating material;
step three: mixing the powdery tundish alkaline coating material with a proper amount of transmitter water to form a wet coating material with proper plasticity and slump;
step four: the wet coating material is coated on the inner lining of the tundish and is baked for 6 hours at the temperature of 650-850 ℃, the low-melting-point material in the waste sagger used in the invention accelerates the sintering and baking process (the traditional alkaline tundish coating material is generally about 8-12 hours), and in addition, the material phase in the waste sagger used in the invention is mainly Al which is subjected to homogeneous multiple sintering (burning and burning)2O3The thermal shock resistance and the mechanical impact resistance of the particles, the mullite and the mullite are superior to those of the traditional high-alumina or corundum coating, and the service life of the coating is slightly longer than that of the traditional high-alumina coating.
The compressive strength of the alkaline coating material for the tundish of the second embodiment of the invention is more than 9MPa, and the refractoriness is 1520 ℃.
The technical scheme and the embodiment show that the invention achieves the effects and purposes of full-value, high-value and harmless utilization of the components of the waste sagger; the low-melting-point material in the waste sagger has the effects of fast sintering and short baking time, the phase in the waste sagger material used by the invention is mainly a homogeneous multi-sintering (burned) material and a phase, and the magnesia-alumina spinel has better thermal shock resistance and mechanical impact resistance than the traditional forsterite and high-alumina (and quartz), and the service life of the material is slightly longer than that of the traditional coating material made of the same material. The invention also has the characteristics of low cost and resource recycling, and has positive significance in the aspects of economy, environmental protection, society and the like for reducing the stockpiling land of the waste saggars or facility occupation and reducing other negative effects of environmental protection and saving resources.
The above description is only for the preferred embodiment of the present invention, but the protection direction of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solution and the inventive concept of the present invention are equivalent to be replaced or changed within the technical scope of the present invention.
Claims (4)
1. The utility model provides a material is scribbled to abandonment casket-like bowl centre package, includes abandonment casket-like bowl material, plastify material, its characterized in that: the tundish coating material is prepared by crushing, homogenizing and mixing waste saggars and plasticizing materials serving as raw materials, wherein the waste saggars are waste saggar section sand which is formed by crushing and screening the waste saggars and has the granularity of 1-2 mm and the content of 25-30 percent, 0.35-1.0 mm and the balance of 40-50 percent, and the granularity of less than 0.35mm, the granularity of the plasticizing materials is not more than 0.075mm, and MgO and Al in the waste saggar section sand2O3The total content is more than 85 percent, the mass content of the plasticizing material in the tundish coating is not more than 8 percent, the compressive strength of the waste sagger tundish coating is more than 8MPa, and the refractoriness is more than 1500 ℃.
2. A waste sagger tundish spread according to claim 1, wherein:al in the waste sagger section sand2O3The content is not less than 75%.
3. A waste sagger tundish spread according to claim 1, wherein: the plasticizing material is one or more than one of magnesite powder and bentonite powder, and the granularity of the magnesite powder and the bentonite powder is not more than 0.075 mm.
4. A method of using the waste sagger tundish spread of claims 1-3, characterized in that:
the method comprises the following steps: crushing and screening the waste sagger to prepare waste sagger section sand;
step two: homogenizing and mixing the waste sagger section sand and the plasticizing material to prepare a powdery tundish coating material;
step three: mixing the powdery tundish coating material with a proper amount of transmitter water to form a wet coating material with proper plasticity and slump;
step four: the wet coating material is coated on the inner lining of the tundish and is baked for more than 4 hours at the temperature of 650-850 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210463663.1A CN114736039A (en) | 2022-04-29 | 2022-04-29 | Waste sagger tundish coating and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210463663.1A CN114736039A (en) | 2022-04-29 | 2022-04-29 | Waste sagger tundish coating and using method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114736039A true CN114736039A (en) | 2022-07-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210463663.1A Withdrawn CN114736039A (en) | 2022-04-29 | 2022-04-29 | Waste sagger tundish coating and using method |
Country Status (1)
| Country | Link |
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| CN (1) | CN114736039A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012224487A (en) * | 2011-04-18 | 2012-11-15 | Mitsui Mining & Smelting Co Ltd | Kiln tool for manufacturing positive electrode active material of lithium secondary battery, and method for manufacturing the same |
| CN107973610A (en) * | 2017-12-01 | 2018-05-01 | 中冶武汉冶金建筑研究院有限公司 | A kind of carborundum ramming mass using discarded silicon carbide sagger as primary raw material |
| CN110282991A (en) * | 2019-08-13 | 2019-09-27 | 瑞泰马钢新材料科技有限公司 | A kind of waste and old magnesium aluminate spinel is that raw material prepares the magnesia coating of tundish and method |
| CN110451991A (en) * | 2019-05-21 | 2019-11-15 | 湖南太子新材料科技有限公司 | It is a kind of using discarded mullite sagger as the castable of raw material and its production method |
| CN112979294A (en) * | 2021-03-17 | 2021-06-18 | 中南大学 | Waste sagger repairing coating and using method thereof |
-
2022
- 2022-04-29 CN CN202210463663.1A patent/CN114736039A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012224487A (en) * | 2011-04-18 | 2012-11-15 | Mitsui Mining & Smelting Co Ltd | Kiln tool for manufacturing positive electrode active material of lithium secondary battery, and method for manufacturing the same |
| CN107973610A (en) * | 2017-12-01 | 2018-05-01 | 中冶武汉冶金建筑研究院有限公司 | A kind of carborundum ramming mass using discarded silicon carbide sagger as primary raw material |
| CN110451991A (en) * | 2019-05-21 | 2019-11-15 | 湖南太子新材料科技有限公司 | It is a kind of using discarded mullite sagger as the castable of raw material and its production method |
| CN110282991A (en) * | 2019-08-13 | 2019-09-27 | 瑞泰马钢新材料科技有限公司 | A kind of waste and old magnesium aluminate spinel is that raw material prepares the magnesia coating of tundish and method |
| CN112979294A (en) * | 2021-03-17 | 2021-06-18 | 中南大学 | Waste sagger repairing coating and using method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20220712 |