mullite

useRefractory materials, ceramics, metallurgy, casting, electronics and other industries, high temperature resistance, high intensity and small coefficient of thermal conductivity, remarkable energy saving effect is suitable for oil cracking furnace, metallurgical hot stove, ceramic kiln, tunnel kiln, electric porcelain crucible kiln drawer kiln, glass and various electric furnace lining, can direct contact with the flame, used by the relevant inspection and technical supervision department, the product has reached standards of similar foreign products.Physical and chemical propertiesChemical formula :3Al2O3·2SiO2. Colorless. Rose red or blue when containing impurities. The rhombic system, columnar or needle shaped crystal. The melting temperature is about 1910℃. It is produced by calcining clay, high-alumina raw materials such as kalyst, andalusite, and sillimanite, and ceramics. It is the main component of clay brick, high aluminum brick and porcelain, etc. From places such as the Isle of Mull, Scotland. It can also be obtained by electrofusion. See kyanite and andalusite.