... :2000 4.Grit Size:8-5,3-1,1-0 Best-selling 3-1 White Fused Alumina for Refractory1. White Fused Alumina ... Description1)White Fused Alumina is made by first grade alumina as raw material, smelting in electric arc ... with Brown Aluminum Oxide.4)White Fused Alumina is characterized by high purity, excellent self-sharpening, efficient grinding efficiency, and low ...