According to the material, ingot bricks are divided into clay (Al2O3 ≥ 38%), high alumina (Al2O3 ≥ 50%), red columnar (Al2O3 ≥ 53%), and mullite (Al2O3 ≥ 60%). The usage effect is: red columnar>mullite>high alumina>clay, and the price comparison is: red columnar>mullite>high alumina>clay. Comparison of main raw materials: the clay is pyrophyllite and clay fine powder, the high alumina is bauxite and clay fine powder, the andalusite is andalusite, bauxite, clay fine powder, and the mullite is mullite, bauxite, clay fine powder. The product functions are all casting products in the steel making, casting, and mechanical industries
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