... as main material,widely used in abrasives and refractory industry. Brown Fused Alumina is made by high quality bauxite as main material, fusing ... , choosing, crashing, magnetic, separating, screening, washing etc. Chemical Composition(%) Grit SizeAl2O3TiO2SiO2Fe2O3CaOMgOF4-F8095.0-96.0 2.0-3.8 0 ... casting5.Refractory materials including low cement castables,plastics,bricks etc. Brown fused alumina grit