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Dry material anti-oxidation coating for continuous casting tundish

An anti-oxidation coating and continuous casting technology, applied in the field of refractory coating, can solve the problems affecting the safety performance of the tundish, reducing the strength of dry materials, loose structure, etc. Strong binding effect

Pending Publication Date: 2021-12-31
SHANGHAI LIER REFRACTORY MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The disadvantage is that there is carbon loss during high-temperature baking, which leads to a decrease in the strength of the dry material on the hot surface of the working layer and a loose structure, which has a significant adverse effect on the strength and erosion resistance of the dry material, especially With the extension of high-temperature baking time, the carbon loss is serious and the decarburization layer is deepened, which seriously affects the safety performance of the tundish, and even leads to the occurrence of tundish accidents.

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  • Dry material anti-oxidation coating for continuous casting tundish

Examples

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Effect test

Embodiment example 1

[0049] Weigh 17 parts of medium temperature glass powder, 6 parts of solid water glass, 34 parts of lightly burned magnesium powder, 1.3 parts of terpineol, 2.5 parts of ethyl cellulose, 3.2 parts of water-based epoxy resin, 4 parts of sodium metasilicate nonahydrate, Silicon carbide scrap 32 parts, MoSi 2 30 parts of powder, B 2 o 3 30 parts of powder, SiO 2 25 parts of powder, 50 parts of isopropanol, 30 parts of chloroplatinic acid powder, 45 parts of absolute ethanol, 15 parts of polycarbosilane solution, 18 parts of dilute ammonia solution and 57 parts of deionized water;

[0050] Send the light-burned magnesium powder and water-based epoxy resin into the planetary ball mill, vibrate and grind for 80 minutes at a speed ratio of 1:1.5, and then send it to a vacuum drying furnace for heating and drying. For 25 minutes, the heating temperature is 95°C, and the mixed powder is obtained. The particle size of the mixed powder is 600 mesh. Put the medium temperature glass pow...

Embodiment example 2

[0053] Weigh 18 parts of medium temperature glass powder, 5 parts of solid water glass, 33 parts of lightly burned magnesium powder, 1 part of terpineol, 2 parts of ethyl cellulose, 3 parts of water-based epoxy resin, 3 parts of sodium metasilicate nonahydrate, Silicon carbide scrap 35 parts, MoSi 2 30 parts of powder, B 2 o 3 30 parts of powder, SiO 2 25 parts of powder, 50 parts of isopropanol, 30 parts of chloroplatinic acid powder, 45 parts of absolute ethanol, 15 parts of polycarbosilane solution, 18 parts of dilute ammonia solution and 56 parts of deionized water;

[0054] Send the light-burned magnesium powder and water-based epoxy resin into the planetary ball mill, vibrate and grind for 80 minutes at a speed ratio of 1:1.5, and then send it to a vacuum drying furnace for heating and drying. For 25 minutes, the heating temperature is 95°C, and the mixed powder is obtained. The particle size of the mixed powder is 600 mesh. Put the medium temperature glass powder, si...

Embodiment example 3

[0057]Weigh 16 parts of medium temperature glass powder, 8 parts of solid water glass, 31 parts of lightly burned magnesium powder, 1.5 parts of terpineol, 3 parts of ethyl cellulose, 3 parts of water-based epoxy resin, 3.5 parts of sodium metasilicate nonahydrate, Silicon carbide scrap 34 parts, MoSi 2 30 parts of powder, B 2 o 3 30 parts of powder, SiO 2 25 parts of powder, 50 parts of isopropanol, 30 parts of chloroplatinic acid powder, 45 parts of absolute ethanol, 15 parts of polycarbosilane solution, 18 parts of dilute ammonia solution and 58 parts of deionized water;

[0058] Send the light-burned magnesium powder and water-based epoxy resin into the planetary ball mill, vibrate and grind for 80 minutes at a speed ratio of 1:1.5, and then send it to a vacuum drying furnace for heating and drying. For 25 minutes, the heating temperature is 95°C, and the mixed powder is obtained. The particle size of the mixed powder is 600 mesh. Put the medium temperature glass powder...

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Abstract

The invention relates to the technical field of refractory coatings, in particular to a dry material anti-oxidation coating for a continuous casting tundish. The coating contains medium-temperature glass powder, solid water glass, caustic-burned magnesia powder, terpilenol, ethyl cellulose, waterborne epoxy resin, sodium metasilicate nonahydrate, silicon carbide waste, MoSi2 powder, B2O3 powder, SiO2 powder, isopropanol, chloroplatinic acid powder, absolute ethyl alcohol, a polycarbosilane solution, a dilute ammonia water solution and deionized water. The problems that oxygen cannot be blocked during high-temperature baking of an existing working layer, carbon oxidation is likely to happen after phenolic resin is carbonized, the strength of the dry material is reduced, the service life of the dry material is shortened, a packet collapse accident is likely to happen, and the use cost of the dry material per ton of steel is higher can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of refractory coatings, in particular to an anti-oxidation coating for continuous casting tundish dry material. Background technique [0002] The magnesium dry material in the working layer of the continuous casting tundish can reduce the pollution of the molten steel due to the introduction of refractory impurities, and is easy to turn over during use. The unsintered dry material has a high porosity, which is beneficial to the heat preservation of the molten steel. It has the advantages of long service life and high construction efficiency, so it has been widely used and greatly improved the labor productivity of the continuous casting process. [0003] At present, phenolic resin is used as the binder for the slag line magnesium dry material in the working layer of the tundish, which has outstanding advantages. Anti-slag performance; after use, it has good disassembly and is easy to turn over. [0004] Th...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/18
CPCC09D1/00C09D5/18
Inventor 李胜春李勇伟李洪波孙振猛李维锋
Owner SHANGHAI LIER REFRACTORY MATERIAL
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