white fused alumina: 1.Usage:Abrasives for sandblasting and grinding;refractory 2. Al2O3: 99.4% min; 3. Hot sale overseas. ... middle or high level iron runner casting material, gunning refractory and fabricate parts ect. It also can be used ... kinds of corundum products, such as corundum bricks, corundum, mullite corundum, refining corundum perforated bricks, overall blowtorch and combined nozzle, side ...