Introduction of bauxite
Bauxite is also called the alumina or bauxite, main ingredients are aluminum oxide, hydrate alumina containing impurities, is a kind of soil minerals, white or gray, brown yellow or light red by iron. 2.4 2.5 g/cm3 density, hardness, 1 ~ 3 is not transparent, very brittle and very difficult to melt, insoluble in water, soluble in sulfuric acid, sodium hydroxide solution, it is mainly used for aluminium, refractory material.
Bauxite is usually referred to in the refractory industry refers to after calcining Al2O3 > = 48%, and contain low Fe2O3 high bauxite clinker. Clinker to pale yellow and dark gray, it is mainly used for high aluminum refractory material, can also be used to make the fused corundum. High bauxite clinker is according to the content of AL2O3 and Fe2O3, TiO2, CaO + MgO style, K2O + Na2O and other impurity content and clinker indicators such as volume density and bibulous to classification.
Bauxite smelting process
Jin Lin corundum refractories co., LTD., shipped to bauxite raw material, the first artificial removing impurity, the raw material of iron iron rocks (red and yellow) mountain skin (with a red stone cement soil), and other impurities removed, ensure the purity of raw materials. Artificial screening after removing impurity of raw materials. Into the kiln should be 25 a raw blocks of 250 mm, less than 25 mm fragmentation raw meal can't into the kiln. By 1600 degrees centigrade high temperature calcined bauxite clinker.
Bauxite purposes
Shizuishan Jin Lin corundum refractory material co., LTD. Production of bauxite can be used in steelmaking, ironmaking, cement, glass, coking, insulation and other industries. Use mainly includes: the ladle pouring, electric furnace top coating, forged steel in tundish, molten iron mouth not stereotypes refractories, such as project demand, also used to make aluminum magnesium carbon brick, etc.
1, aluminium industry, used for national defense, aerospace, automotive, electrical, chemical industry, daily necessities, etc.
2, precision casting, bauxite clinker made after mold precision casting processed into fine powder, used in military industry, aerospace, communications, instrumentation, machinery and medical equipment department.
3, used for refractory products - high bauxite clinker as high as 1780 ℃, refractoriness strong chemical stability, good physical properties.
4, aluminum silicate refractory fiber with light weight, high temperature resistance, good thermal stability, low thermal conductivity, heat capacity is small and the advantages of resistance to mechanical shock. Used in iron and steel.
5, magnesia and bauxite clinker as raw material, adding proper binder, used for pouring ladle whole ladle lining has particularly good effects.
6, manufacture alumina cement, abrasive materials, ceramic industry and chemical industry can be of aluminum compounds.
