F: 4# -80# 90# -150# 180# -240# P: 8# -80# 100# -150# 180# -220# W: 1# -63# 0-1mm 1-3mm 3-5mm 5-8mm 8-12mm 25-0mm 100-0mm 50-0mm 30-0mm 180# -0 200# -0 320# -0 Brown fused alumina abrasive grade bauxite is quality raw materials, together with the accessories, in Arc Furnace refining by a high temperature above 2250. The self-sharpening, grinding and strong. Brown fused alumina is mainly used in: 1: Abrasives; 2: Refractory; 3: Sand; 4: Emery wear resistant; 5: Precision casting mold shell production.