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75 Ferrosilicon


75 Ferrosilicon Introduction:
Ferrosilicon is widely used in steel industry, foundry industry and other industrial production. The production of 75 ferrosilicon is based on natural silica as raw material, using metallurgical coke as a reducing agent and adding a certain amount of iron-containing material to smelt in a submerged thermal electric furnace. At present, the iron-containing materials in the production of 75 ferrosilicon are all carbon steel scraps, and the added amount is less than that of silica and coke. In addition, the particle size of the steel scraps is difficult to guarantee, so it is inevitable to cause the steel scraps in the furnace. The uneven distribution causes uneven distribution and frequent fluctuation of the resistance value in the furnace, and it is difficult to stabilize the consistency of the electrode and alloy composition.

The use of 75 ferrosilicon:

Ferrosilicon is an essential deoxidizer in the steelmaking industry. In torch steel, ferrosilicon is used for precipitation deoxidation and diffusion deoxidation. Brick iron is also used in steelmaking as an alloying agent. Adding a certain amount of silicon to the steel can significantly improve the strength, hardness and elasticity of the steel, improve the magnetic permeability of the steel, and reduce the hysteresis loss of the transformer steel.

High-silicon ferrosilicon or siliceous alloys are used in the ferroalloy industry as reducing agents for the production of low-carbon ferroalloys. Ferrosilicon can be used as an inoculant for ductile iron when added to cast iron, and can prevent the formation of carbides, promote the precipitation and spheroidization of graphite, and improve the performance of cast iron.

In addition, ferrosilicon powder can be used as a suspended phase in the mineral processing industry, and as a coating for welding rods in the welding rod manufacturing industry.

In the steelmaking industry, about 3 to 5kg of 75% ferrosilicon is consumed per ton of steel produced. In the production of ductile iron, 75 ferrosilicon is an important inoculant (helping to precipitate graphite) and nodularizing agent. Used as a reducing agent in the production of ferroalloys. Not only the chemical affinity between silicon and oxygen is very high, but also the carbon content of high silicon ferrosilicon is very low. Therefore, high-silicon ferrosilicon (or siliceous alloy) is a commonly used reducing agent in the production of low-carbon ferroalloys in the ferroalloy industry. 75 Ferrosilicon is often used in the high-temperature smelting process of metal magnesium in the Pidgeon process of magnesium smelting. The magnesium in CaO.MgO is replaced, and about 1.2 tons of ferrosilicon are consumed for each ton of metal magnesium produced. plays a big role. other uses. The ground or atomized ferrosilicon powder can be used as a suspended phase in the mineral processing industry. It can be used as a coating for welding rods in the welding rod manufacturing industry. High-silicon ferrosilicon can be used in the chemical industry to manufacture products such as silicone.

Melting point: 75FeSi is 1300℃