1) Material: Al2O3 2) Al2O3 Content: 95%min 3) Professional manufacture 4) Hot sale overseas 5)High alumina refractory Brown fused alumina is made by high-quality bauxite as main material, fusing and purifying in a pouring electric arc furnace at a temperature of over 2200°c, and made into different grain size through crystal, choosing, crashing, magnetic, separating, screening, washing and acid ...