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Recycled magnesia carbon coating material with strong slag-corrosion resistance and application thereof
The invention relates to a recycled magnesia carbon coating material with strong slag-corrosion resistance and an application thereof. The coating material is composed of the following materials by weight percentage: 10-15% of waste magnesia carbon brick regenerated granule material with the granularity of not less than 3mm and not more than 5 mm, 25-30% of waste magnesia carbon brick regenerated granule material with the granularity of not less than 1 and not more than 3 mm, 30-35% of magnesite clinker with the granularity of not less than 0.083 mm and not more than 1 mm, 10-12% of fused magnesite micro powder with the granularity of less than or equal to 0.047mm, 3-5% of alpha-Al2O3 micro powder with the granularity of less than or equal to 0.047 mm, 3.5-5% of alumina-magnesia spinel micro powder with the granularity of less than or equal to 0.047 mm, 3.5-4.0% of soft clay, 1.5-2.5% of silica powder, 0.2-0.5% of sodium tripolyphosphate, 0.5-1.0% of metal silicon powder with the granularity of less than or equal to 0.074 mm, 0.7-1.2% of silicon carbide powder with the granularity of less than or equal to 0.074 mm, and 0.1-0.3% of refractory fiber. The recycled magnesia carbon coating material with strong slag-corrosion resistance, provided by the invention, is good in slag-corrosion resistance and long in service life, the problems of penetration of steel in the recycled magnesia carbon coating material, the penetration of steel between the upper nozzle and the brick cup, the high cladding temperature of the tundish and the bad disassembly performance are solved, the single packet pouring time is increased by 6h or above and the cladding temperature of the tundish is reduced by 60 DEG C or above.
Recycled magnesia carbon coating material with strong slag-corrosion resistance and application thereof
The invention relates to a recycled magnesia carbon coating material with strong slag-corrosion resistance and an application thereof. The coating material is composed of the following materials by weight percentage: 10-15% of waste magnesia carbon brick regenerated granule material with the granularity of not less than 3mm and not more than 5 mm, 25-30% of waste magnesia carbon brick regenerated granule material with the granularity of not less than 1 and not more than 3 mm, 30-35% of magnesite clinker with the granularity of not less than 0.083 mm and not more than 1 mm, 10-12% of fused magnesite micro powder with the granularity of less than or equal to 0.047mm, 3-5% of alpha-Al2O3 micro powder with the granularity of less than or equal to 0.047 mm, 3.5-5% of alumina-magnesia spinel micro powder with the granularity of less than or equal to 0.047 mm, 3.5-4.0% of soft clay, 1.5-2.5% of silica powder, 0.2-0.5% of sodium tripolyphosphate, 0.5-1.0% of metal silicon powder with the granularity of less than or equal to 0.074 mm, 0.7-1.2% of silicon carbide powder with the granularity of less than or equal to 0.074 mm, and 0.1-0.3% of refractory fiber. The recycled magnesia carbon coating material with strong slag-corrosion resistance, provided by the invention, is good in slag-corrosion resistance and long in service life, the problems of penetration of steel in the recycled magnesia carbon coating material, the penetration of steel between the upper nozzle and the brick cup, the high cladding temperature of the tundish and the bad disassembly performance are solved, the single packet pouring time is increased by 6h or above and the cladding temperature of the tundish is reduced by 60 DEG C or above.
Recycled magnesia carbon coating material with strong slag-corrosion resistance and application thereof
WU GUANGJUN (author) / WU ZHIHONG (author)
2015-07-15
Patent
Electronic Resource
English
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