High alumina bricks have the following applications in the steel industry:
– Masonry blast furnace: the internal temperature of the blast furnace is very high and there is slag erosion, high refractoriness of high alumina bricks, up to 1750℃-1790℃, can withstand the high temperature environment in the blast furnace. Its alumina content is high, close to the neutral refractory material, can resist the erosion of acidic slag and basic slag, effectively protect the BF lining, prolong the BF service life.
– Construction of hot blast furnace: hot blast furnace needs to continuously store and release a lot of heat, high refractoriness and good thermal stability of high alumina bricks, which can make it maintain structural stability in frequent temperature changes, ensure the normal operation of hot blast furnace and efficient heating, and help to improve the efficiency and quality of steel production.
– As the top material of the electric furnace: the top temperature of the electric furnace is high and the temperature changes are large, the load softening temperature of the high alumina brick is high, the thermal shock resistance is strong, and it can withstand the high temperature and urgent cooling and hot during the operation of the electric furnace, ensure the sealing and stability of the top of the electric furnace, and provide a stable working environment for iron and steel smelting.
– For ladle and tundish: the molten steel has a high temperature and has a certain erosion, high alumina bricks can be used for the lining of ladle and tundish, resist the erosion and erosion of molten steel, reduce the loss of refractory materials, and ensure the quality of molten steel and the smooth progress of continuous casting process.
– Production of pouring system components: high alumina bricks can also be used to make open furnace regenerative lattice bricks, plug head for pouring system, water brick, etc. These components play a key role in the process of iron and steel smelting and pouring, the excellent performance of high alumina bricks can ensure its normal work, improve the efficiency and quality of steel production.
