Silicon manganese is an alloy composed of manganese, silicon, iron and a small amount of carbon and other elements. It is a kind of ferroalloy with a wide range of uses and large output, and it ranks second in the amount of ferroalloy products for electric furnace.
Both manganese and silicon in the Mn-Si alloy have a strong affinity with oxygen. When manganese-silicon alloy is used in steelmaking, the melting points of the deoxidized products MnSiO3 and Mn2SiO4 are 1270℃ and 1327℃, respectively, which have low melting point, large particles, and easy to float , good deoxidation effect and other advantages.
Under the same conditions, when manganese or silicon is used alone for deoxidation, the burning loss rates are 46% and 37%, respectively, while for manganese-silicon alloy deoxidation, the burning loss rates of both are 29%.