High alumina brick standard brick

High alumina refractory brick is a type of high alumina refractory brick with an alumina content of over 48%. According to the different alumina content, it can be divided into first grade high alumina brick, second grade high alumina brick, third grade high alumina brick, and special grade high alumina brick. It is mainly formed and calcined from alumina or other raw materials with high alumina content, with high thermal stability, fire resistance above 1770 ℃, and good slag resistance. Therefore, it is mainly used for lining blast furnaces, hot blast furnaces, electric furnace roofs, blast furnaces, reflex furnaces, and rotary kilns.