Chromite is a magmatic mineral, often produced in ultrabasic rocks, and associated with olivine. It is also found in placers. It looks like magnetite in appearance, and is generally a lump or granular aggregate. In the metallurgical industry, chromite is mainly used to produce chromite alloys and metal chromium.
Ferrochrome alloy is used as an additive to produce a variety of special steels with high strength, corrosion resistance, wear resistance, high temperature resistance and oxidation resistance. Chromium metal is mainly used for smelting special alloys with cobalt, nickel, tungsten and other elements. Chromite is a kind of ore in short supply, with little reserves and low production. In industry, chromium iron, chromium spinel, rich chromium spinel, hard chromium spinel and other similar minerals are often referred to as chromite.
Magnesia-chrome bricks and magnesia-chrome bricks are used in metallurgy, glass and cement industries. Due to the use of chromium containing products in cement rotary kilns will produce hexavalent chromium compounds, based on environmental protection reasons, gradually replaced by magnesium aluminum spinel products or dolomite products. In addition, it is used for refining chromium metal, producing ferrochrome alloy, stainless steel, manufacturing dichromate and so on.
Chromite as an important raw material in high carbon soldering iron, also plays an important role in the industry, its own unique characteristics support its position, what are the characteristics?
Ferrochrome features:
In the metallurgical industry, chromite is mainly used to produce chromite alloys and metal chromium. Ferrochrome alloy is used as an additive to produce a variety of special steels with high strength, corrosion resistance, wear resistance, high temperature resistance and oxidation resistance. Chromium metal is mainly used for smelting special alloys with cobalt, nickel, tungsten and other elements. Chromite is a magmatic mineral, often found in ultrabasic rocks, in association with olivine, and also in placers. It looks like magnetite in appearance, and is generally a lump or granular aggregate.
In short, chromite is relatively small, so in the industry often chromium spinel, chromium iron, chromium rich spinel, hard chromium spinel and other minerals are collectively referred to as chromite.
Application of Ferro Chromium：
Ferro chromium has three functions in the steelmaking and casting industry.
Deoxidizer. Ferro chromium alloys can remove oxygen from molten steel in the steelmaking process, and other impurities such as sulfur and nitrogen in steel can also be removed with other ferroalloys.
Alloy additives. According to the composition requirements of the steel type, ferro chromium alloy elements are added to the steel to improve its performance of the steel.
Inoculant. As inoculant, ferro chromium alloy is added to molten iron before casting to improve the crystalline structure of cast iron.
According to the different carbon content in ferro chromium, it also has different uses. Chromium is mainly used to improve the oxidation resistance and corrosion resistance of steel so that a strongly adhered oxide film is formed on the surface of the steel during the oxidation process, which effectively prevents or slows down the oxidation reaction.
