... termperature form of materials Brown Corundum,fuesd alunmina Brown Fused Alumina is bauxite, carbon materials, iron filings in the three ... artificial corundum, and are thus brown corundum. Brown Fused Alumina is the main chemical ingredient AL2O3, its content is ... rare metals, special alloys, ceramics, iron-smelting furnace of the lining (walls and tubes); physical and chemical containers , spark plugs ...