ferro silicon process

Apr 22, 2020 / 1284 views

Ferro Silicon processing and uses of ferrosilicon alloys

(1) used as deoxidizer and alloy agent in steelmaking industry.In order to obtain chemical composition of qualified steel and ensure the quality of steel In the final stage of steelmaking must be deoxidized, the chemical affinity between silicon and oxygen is very big, so ferro silicon is a strong deoxidization in steelmaking oxygen agents are used for precipitation and diffusion deoxidation.Adding a certain amount of silicon to steel can obviously improve the strength, hardness and elasticity of steel.So in the smelting of structural steel (including silicon 040-1.75%), tool steel (including SiO301.896), spring steel (including sio40-28%).And when transformer USES silicon steel (contain silicon 281-48%0), also USES ferrosilicon as alloying agent.

In addition, in the steelmaking industry, the use of ferrosilicon powder at high temperature combustion can give off a lot of heat this characteristic, often used as ingot cap .Heating agent is used to improve the quality and recovery of ingot.

(2) used as inoculant and spheroidizing agent in cast iron industry.Cast iron is an important metal material in the modern industry.Steel is cheap, easy to melt, has excellent casting properties and is much better than steel at shaking, especially ductile iron. Its mechanical properties reach or approach those of steel.Adding a certain amount of ferrosilicon to cast iron prevents the formation of carbides in iron,Promotes the precipitation and spheroidization of graphite. Therefore, ferrosilicon is an important gestation agent in the production of ductile iron.And spheroidizing agent.

(3) iron used as a reducing agent.The chemical affinity between silicon and oxygen is great, and the carbon content of high silicon ferrosilicon is very low.Therefore, high silicon ferrosilicon (or siliceous alloy) is a reducing agent commonly used in the production of low carbon ferroalloy in the ferroalloy industry.
Electrode manufacturing can be used as welding electrode coating.High silicon ferrosilicon can be used in the chemical industry to make products such as silicone.

(4) other USES.Pulverized or atomized ferrosilicon powder can be used as suspended phase in mineral processing industry.Among these USES, the steelmaking industry, the foundry industry and the ferroalloy industry are the largest users of ferrosilicon.They consume about ferro silicon above 909.Among the various grades of ferrosilicon, the most widely used is 75% ferrosilicon.In the steel industry,

Approximately 3-5kg75% ferrosilicon is consumed per 1t of steel produce

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