Iron is an alloy of iron and silicon. Ferrosilicon is coke, steel chips, quartz (or silica) as raw materials, with electric furnace smelting made of ferrosilicon alloy. Because silicon and oxygen are easy to combine into silicon dioxide, so iron silicon is often used as a deoxidizer in steelmaking. At the same time, due to the release of a lot of heat when SiO2 is generated, it is also favorable to improve the temperature of molten steel at the same time.
Ferrosilicon can also be used as alloying element addition agent, widely used in low alloy structural steel, spring steel, bearing steel, heat-resistant steel and electrical silicon steel, ferrosilicon in ferroalloy production and chemical industry, commonly used as reducing agent. Ferrosilicon alloy composed of iron and silicon (with silica, steel, coke as raw materials, after 1500-1800 degrees of high temperature reduction of silicon fused in liquid iron, forming ferrosilicon alloy). It is an important alloy variety in smelting industry.
The role of ferrosilicon is deoxidizer, alloying agent and reducing agent. The role of silicon manganese is deoxidizer, alloying agent and desulfurizer. Silicon can significantly improve the elasticity and permeability of steel. Manganese can reduce the brittleness of the stiffness, improve the heat treatment performance of the stiffness, and increase the strength, hardness and wear resistance of the stiffness. The silicon manganese alloy deoxidizes and may increase the manganese content of the finished steel and increase its strength. As a result, the proportion of silico-manganese alloy used as a deoxidizer is gradually higher than that of ferrosilicon. As the saying goes, "You can't make steel without manganese." At present, manganese cannot be replaced by other elements in the steel production process.
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