Corundum is bauxite, coke ( anthracite ) as the main raw materials, high temperature melting in an electric arc furnace, crystalline form, it has high hardness, toughness, particle sharp, grinding force, high temperature resistance, high efficiency, is the quality of the abrasive material and senior refractories Abrasives tools made of it. Suitable for grinding, higher tensile strength metals, cutting, grinding steel, carbon steel, alloy steel, malleable steel general. Can also be used as refractory material, widely used in steel, chemical and other industries bjtm5899@126.com