product Overview: 　　High-alumina brick for blast furnace is a refractory product which is calcined high-quality high-alumina bauxite clinker and binder first through granulation and pulverization processes, mixed at a certain ratio, and then press-molded and fired at high temperature. According to the physical and chemical indicators, it is divided into three grades: GL-65, GL-55, and GL-48. Mainly used for masonry blast furnace below the belly.