The Application Of Ferrosilicon 72 Lumps

Ferrosilicon 72 represents a ferrosilicon alloy with a silicon content of 72%. This alloy is made of coke, steel chips and Shi Ying (or silica) by electric furnace smelting. Ferrosilicon 72 is defined by national standards and widely used in iron and steel smelting industries.

Ferrosilicon 72 is mainly used as a deoxidizer and alloying agent in the steelmaking industry and as an inoculant and nebulizer in the cast iron industry. In the steelmaking industry, ferrosilicon 72 is used as a deoxidizer and alloying agent, and its function is to deoxidize in the final stage of steelmaking to ensure the quality of steel. The addition of ferrosilicon 72 can significantly improve the strength, hardness and elasticity of steel, so ferrosilicon 72 is used as an alloying agent in smelting structural steel, tool steel, spring steel and transformer silicon steel, and as inoculant and nebulizer in cast iron industry. Cast iron is an important metal material. Adding ferrosilicon can prevent the formation of carbides in iron and promote the precipitation and spheroidization of graphite, thus improving the properties of cast iron. In the production of nodular cast iron, ferrosilicon 72 is an important inoculant and nebulizer. In addition, ferrosilicon 72 is also used in other aspects, such as as reducing agent in ferroalloy production and suspension phase in the mineral processing industry.

The selection of raw materials is very important in the smelting process of ferrosilicon. Choosing suitable ferrosilicon, coke and flux is the key to ensuring ferrosilicon quality and reducing cost. Shi Ying ore is a kind of ore rich in silicon dioxide, with high silicon content and fewer impurities, which is an ideal raw material for preparing high-quality ferrosilicon. Although wollastonite and metallic silicon have high silicon content, they contain more impurities, so they need pretreatment before they can be used for smelting ferrosilicon, which is usually made by an electric arc furnace or blast furnace.

Electric arc furnace is suitable for small-scale production, with the advantages of high flexibility and low energy consumption, and is suitable for producing high-quality ferrosilicon. The blast furnace is usually used for large-scale production, which can realize continuous production, but it has high energy consumption and is suitable for producing large quantities of low-quality ferrosilicon. According to the production scale, raw material conditions, energy costs and other factors to choose. Traditional slag treatment methods include incineration and landfill, which have the problems of environmental pollution and resource waste. Improving slag treatment methods, such as adopting more environmentally friendly technologies, can reduce environmental pollution and improve resource utilization.

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