Brown Fused Alumina 1 Al2O3: 95.0%min 2 Good Hardness & Toughness 3 Higher compressive strength 4 Heat-resistant property 1. Introduction 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 ...