Application status of Tabular Corundum refractories in the steel industry
Oct 19, 2024Tabular corundum can be used as the main component in aluminum-carbon, aluminum-magnesium-carbon, magnesium-aluminum-carbon, magnesium-spinel, and aluminum-chromium refractory bricks, and can also be introduced as an enriched alumina component into high-aluminum amorphous refractory materials.
It can be widely used in the steel, casting, ceramics and other industries, among which the application in the steel industry almost covers the entire process of iron and steel making.
The application status of refractory materials made of tabular corundum in the steel industry is listed in Table 1
| Equipment | Application area | Types of materials used | Performance |
| Blast Furnace | Furnace lining, hot blast furnace, pouring yard (main ditch, iron tapping ditch) | Aluminum-chrome bricks, high-aluminum bricks, high-aluminum castables, high-aluminum plastics, aluminum silicon carbide carbon castables | Good thermal shock resistance, resistance to alkaline slag corrosion, high high temperature strength |
| Mixed-metal car | Working lining (slag wire brick, iron wire brick, top turn), aluminum carbon fire mud | Aluminum silicon carbide carbon brick, aluminum magnesium carbon brick, aluminum carbon brick, aluminum silicon carbide carbon refractory mud | Good resistance to slag erosion and molten iron erosion |
| Ladle | Working lining, air-permeable bricks, nozzle seat bricks | Aluminum silicon carbide carbon bricks, aluminum magnesium prefabricated parts, aluminum spinel prefabricated parts, magnesium aluminum unfired bricks, aluminum magnesium unfired bricks, aluminum spinel fired products | Good thermal shock resistance, good slag resistance, resistance to molten steel erosion, good air permeability |
| Tundish | Backup working lining, bag cover | Low cement castables, high alumina precast bricks | Volume stability |
| RH | Dip tube, circulation tube | Corundum spinel castables, prefabricated parts | Good thermal shock resistance and slag resistance |
| Water outlet | Long shroud, submerged shroud | Aluminum carbon nozzle, aluminum carbon slide plate, etc. | Good thermal shock resistance and molten steel corrosion resistance |
| Sliding gate | Water outlet, skateboard | Aluminum carbon nozzle, corundum spinel pouring nozzle, aluminum carbon slide plate, etc. | Good thermal shock resistance, good erosion resistance, |
| Heating furnace | Working lining | High aluminum plastic, castables, prefabricated blocks | Stable volume and good thermal insulation effect |
Table 1
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