Ferro Silicon is composed of iron and silicon alloy. Ferro Silicon is coke, steel scrap, quartz (or silica) as raw material, made of iron smelting furnace silicon alloy. The silicon and oxygen is easy synthetic silica, so commonly used in steelmaking Ferro Silicon as a deoxidizer, and because the SiO2 emit a lot of heat generated in the oxygen, while the temperature of molten steel is also advantageous to improve. Meanwhile, ferrosilicon alloy elements can be added as an agent, widely used in low-alloy structural steel, spring steel, bearing steel, heat-resistant steel and electrical silicon among ferrosilicon in ferroalloy production and chemical industry, used as a reducing agent.
Application:
Ferrosilicon in the steel industry, foundry industry and other industrial production has been widely applied.
Ferrosilicon is the steel industry indispensable deoxidizer. Ju steel, ferrosilicon for deoxidation and diffusion of oxygen precipitation. Brick iron also as an alloying agent used in steelmaking. Adding a certain amount of the steel, silicon steel, can significantly improve the strength, hardness and elasticity, permeability increase of steel, reducing the hysteresis loss of transformer steel. General silicon steel 0.15% -0.35% 0.40% silicon steel ~ 1.75%, tool steel, silicon 0.30% ~ 1.80%, 0.40% silicon spring steel to 2.80% acid-resistant stainless steel containing silicon 3.40% ~ 4.00%, heat-resistant steel from 1.00% to 3.00% silicon, silicon, silicon 2% to 3% or higher.
High silicon ferrosilicon or silicon alloys in ferroalloy ferroalloy industry for the production of low-carbon reductant. Cast iron can be added ferrosilicon inoculant for ductile iron, and can prevent the formation of carbides, and promote the precipitation of graphite and the ball, to improve performance of cast iron.
In addition, ferrosilicon powder in the mineral processing industry can be used as a suspended phase in the electrode manufacturing of coatings for welding electrodes; high silicon ferrosilicon used in the electrical industry in preparing a semiconductor pure silicon, in the chemical industry for the manufacture of silicone.
In the steel industry, each producing one ton of steel consumes about 3 ~ 5kg75% ferrosilicon.
Melting point: 75FeSi to 1300 ℃
Ferrosilicon metal compound containing a small amount of phosphorus, such as calcium phosphate in travel transportation or warehouse storage, if wet, can release phosphine, the positions in or around the crowd poisoning. Phosphine poisoning, severe cases can cause death.
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From:Metal materials
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