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The main distribution and application of silicomanganese

Date: 12-28-2022
1. Main distribution
Star Metallurgy mainly supplies: silicomanganese 6517 silicomanganese 6014 silicomanganese powder, silicomanganese and silicomanganese are abundant in Southwest China.
2. Main purpose
Silicon-manganese alloys are mainly used as intermediate materials for deoxidizers and alloying agents in steel production, and are also the main raw materials for the production of medium and low carbon ferromanganese. Silicon-manganese alloy is an alloy composed of manganese, silicon, iron and a small amount of carbon and other elements. It is a ferroalloy with wide application and large output. Its consumption occupies the second place of electric furnace ferroalloy products. Silicon and manganese in silicomanganese alloys have a strong affinity with oxygen. When silicomanganese alloys are used in steelmaking, the deoxidized products MnSiO3 and MnSiO4 are melted at 1270°C and 1327°C respectively. They have low melting points, large particles, and are easy to float. , Good deoxidation effect and so on. Under the same conditions, using manganese or silicon alone for deoxidation, the burning loss rate is 46% and 37% respectively, while using silicon-manganese alloy for deoxidation, the burning loss rate of the two is 29%. Therefore, it has been widely used in steelmaking, and its output growth rate is higher than the average growth rate of ferroalloys, and it has become an indispensable composite deoxidizer and alloy additive in the steel industry.
Silicon-manganese alloys with a carbon content of less than 1.9% are still semi-finished products for the production of medium and low-carbon ferromanganese and electrosilicothermal manganese. In ferroalloy production enterprises, silicon-manganese alloys used in steelmaking are usually called commercial silicon-manganese alloys, silicon-manganese alloys used in smelting low-carbon iron are called self-use silicon-manganese alloys, and silicon-manganese alloys used in metal smelting are called high-silicon alloys. Silicon manganese alloy. Manganese can be combined with silicon to synthesize silicides MnSiO3, MnSiO and MnSiO3. It can be seen from the silicon-manganese state diagram that the stable silicide is MnSi. Due to the negative value of the free energy of manganese silicide formation, it is far greater than the negative value of the free energy of manganese carbide production. The higher the silicon content in the silicon-manganese alloy, the lower the carbon content.
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