... 4.95/90/85/80/70 Brown fused alumina for buffing Product Description: Brown fused alumina is made by bauxite as main material, ... °C Application: 1) Abrasive 2) Refractory material 3) Sandblasting abrasive 4) Abrasion resistance ground 5) Precision casting NOTE: ... sand filters, zeolite filters, fillers, bulk bauxite, corundum, white corundum, black corundum, silicon carbide, spinel and other refractory ...