The smelting of white corundum and brown corundum is different: white corundum is produced by dumping method, and the lining construction material is usually white corundum sand or alumina powder. Receiving bags include unlined receiving bags and lined receiving bags. Unlined seamed bags should be forced to water cooling. Generally, graphite or white corundum refractory products are used as the lining of the lining.
For the production of white corundum by the frit method, the furnace lining needs good heat insulation and air permeability. The furnace body is divided into lining type and unlined type.
white fused alumina powder Sintered products usually require inner linings, and the heat loss of unlined products accounts for 24% of the energy consumption of the product, and only 4% of the lining heat loss.
White fused alumina, like brown fused alumina, uses alumina powder as the main raw material, suitable for chromium oxide, etc., and melts at high temperatures. Chrome corundum is pink, the hardness is similar to white corundum, and the toughness is higher than white corundum.
White corundum abrasive has good durability and high finish. It is suitable for precision grinding of measuring tools, machine tool spindles, instrument parts, threaded workpieces and template milling cutters. In the metallurgical industry, chromite is mainly used to produce ferrochrome and metallic chromium.
hsl abrasives Ferrochrome is used as a steel additive to produce various special steels with high strength, corrosion resistance, wear resistance, high temperature resistance and oxidation resistance, such as stainless steel, acid-resistant steel, heat-resistant steel, ball bearing steel, spring steel, tool steel, etc.
In addition, white corundum is made of industrial alumina powder by melting, cooling, pulverizing and shaping in an electric arc at a high temperature of over 2000 degrees, magnetic separation and iron removal and sieving into various particle sizes. White corundum has dense texture, high hardness, and sharp edges and corners. Suitable for manufacturing ceramics, resin bonded abrasives, grinding, polishing, sandblasting, precision casting (corundum for precision casting), etc. It can also be used to make advanced refractories.
