The mineral composition of high alumina refractory brick is mainly corundum, mullite and glass phase, and its content partly depends on the type and quantity of impurities, which can be classified according to the content of Al2O3.
The raw materials of the refractory brick are high bauxite and siliconeite, some fused corundum, sintered alumina, synthetic mullite. There are also clinkers calcined with alumina and clay in different proportions. High alumina refractory brick is produced by sintering method.
As we know, one of the most main characteristics of high alumina brick is earthquake resistance, the intensity of earthquake resistance also depends on the density of high alumina brick. Therefore, the density of high aluminum brick is an important factor to judge the quality of high aluminum brick.
High alumina refractory bricks with high refractoriness, up to 1750℃~1790℃, belong to high refractory materials. The softening temperature under load is high ,less impurity, strong slag resistance, can resist the erosion of acid slag and alkaline slag.
High alumina refractory bricks are widely used in iron and steel industry, non-ferrous metal industry and other industries. It is mainly used for lining blast furnace, hot blast furnace, electric top, blast furnace, reverberatory furnace and rotary kiln. In addition, high alumina refractory brick is also widely used as open hearth regenerative lattice brick, plug head and nozzle brick for pouring system.
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