1. Anti-shedding high alumina bricks High alumina refractory bricks are an aluminum silicate refractory material with an alumina content of more than 48%. It is formed and calcined from alumina or other raw materials with high alumina content. It has high thermal stability and refractoriness above 1770℃. Good slag resistance. Mainly used for lining blast furnaces, hot blast furnaces, electric furnace roofs, blast furnaces, reverberatory furnaces, and rotary kilns. In the cement industry, it is often used in transition zones, differentiation zones, and kiln door covers of small cement kilns to resist wear and tear.