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Introduction of Chromite

Chromite (block, cubic system) is the mineral magmatism, often from the ultrabasic rock, and olivine symbiosis; Also found in sands. Appearance looks very like magnetite, show or lump. In the metallurgical industry, chromite is mainly used to produce chromium iron alloy and metal chrome. Ferrochrome as steel to add material to produce a variety of high strength, corrosion resistance, wear resistance, high temperature resistant, resistant to oxidation of special steel. Chromium metal is mainly used for and the element such as cobalt, nickel, tungsten smelting special alloy. Chromite is the shortage of minerals, reserves, production is low. In industry, often the chromite, chromium spinel, rich chromium spinel, hard chromium spinel and similar mineral, collectively known as chromite.

Chromite Physical Properties

Have been found in the nature of about more than 50 kinds of chromium minerals, respectively belong to the oxide, chromium acid salts and silicate. Chromium minerals of commercial value belong to chromium spinel minerals, physical properties for the cubic system, octahedral crystal is small, usually in granular and compact block, color black, brown striation, semi metallic luster, hardness is 5.5, the proportion of 4.2 to 4.8, with weak magnetism. Belongs to magmatic origin minerals, which are found in the ultrabasic rock, when the ore rock weathering damage, often into the sands.

Purpose of the Chromite

Chromite massive Isometric in metallurgy, glass, cement industry as magnesite chrome brick. Because on the cement rotary kiln using chromium products can produce 6 hexavalent chromium compounds, based on the cause of environmental protection, gradually replaced by magnesium aluminate spinel products or dolomite products. In addition, used in production of refined metal chromium, chromium iron alloy, stainless steel, the manufacture bichromate, etc. Chrome ore is the development of metallurgy, national defense, chemical and other industries indispensable mineral resources, mainly used in metallurgical industry production of stainless steel and various kinds of alloy steel, alloy, in glass, ceramic, refractory, etc are widely used. Include: casting, for large steel casting, casting sand, sand steel flow. Metallurgy, used in the production of high carbon chromium iron and low carbon ferrochrome. Refractory grade/chemical, used in the production of magnesium chrome sand, such as magnesite chrome brick refractory materials. South African steppe highlands composite structure is chrome ore reserves in the world the most abundant areas, 76.1% of the world known chromium deposits. Among them is west ore belt Rustenbug centered, and given priority to with Steelpoort and Bugersfort east ore belt.

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