... steel, malleable cast iron and hard bronze.It used for refractory aluminum oxide lining mixture, pouring materials castable,etc.2.Chemical compositions Grit ... is used in the manufacturing of all types of brown aluminum oxide coated abrasive products, for example, cloth, fiber, and paper which ... :Peggy LiTel:0086-371-63873855Fax:0086-371-63691212 brown fused aluminum oxide-for refractory material