... is fused and crystallized under high termperature form of materials Brown Corundum,fuesd alunmina Brown Fused ... temperature, corrosion resistance, high strength properties, it poured with steel sliding gate, smelting rare metals, special alloys, ceramics, iron-smelting furnace of ... used in a variety of high-temperature kiln furnace walls and roof, both high-temperature insulation again. item9596 97 ...