Corundum aluminum geotechnical, coke (anthracite), iron as the main raw material in the electric arc furnace at high temperature melting crystalline is formed, it has high hardness, toughness, and and Fengrui particles, grinding power, high temperature and high efficiency is a high-quality abrasives materials and advanced refractories. It is made of abrasive used for grinding tensile strength higher metal, can be cut, grinding a variety of common steel, carbon steel, alloy steel, malleable Qinggang hard Qinggang also can be used as senior refractory materials, widely used in the steel, chemical and other industries.