Classification Of Ferro Silicon

Ferrosilicon, as a key ferroalloy material, has a core function that is particularly prominent in industrial production. Not only does it significantly improve the hardness and wear resistance of steel, it optimizes steel quality by removing oxide impurities, but it also reacts with oxides to form high-melting silicates, thereby enhancing the corrosion resistance of steel.

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Classification of ferrosilicon

According to the smelting method, ferrosilicon is divided into four categories: high-silicon ferrosilicon, ordinary ferrosilicon, low-alumina ferrosilicon and high-purity ferrosilicon. High-purity ferrosilicon refers to ferrosilicon with low impurity element content produced by the off-furnace refining method.

High silicon ferrosilicon: ferrosilicon with a silicon content of more than 87%.

Ordinary ferrosilicon: the most widely used 72# ferrosilicon, 75# ferrosilicon, 65# ferrosilicon, and the content of other impurities in the alloy generally does not do too much ferrosilicon.

Low-alumina ferrosilicon: In ferrosilicon alloys, the alloys made by adding a certain amount of aluminum elements also become silicon-aluminum-ferrosilicon alloys, in which the content of aluminum needs to be marked. For example, the grade is DL FeSi75Al0.8, which indicates a low alumina ferrosilicon with an aluminum content of 0.8%.

High-purity ferrosilicon: a ferrosilicon alloy with Si and Fe as effective elements, and low content of other impurities. The controllable range of impurity content is C0.05-0.003%, S0.01-0.002%, P<0.02%, V0.05-0.001%, B0.01-0.002%, Mn<0.10%, Mg0.05-0.005%, Ti0.05-0.007%, Ca0.05-0.002%, Ca<0.05%, Cr<0.05%, Ni<0.05, Zr0.01-0.003, Al<0.1% , the sum of other impurities is less than 0.05%.

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Uses of high-purity ferrosilicon

High-purity ferrosilicon is an advanced form of ordinary ferrosilicon, which requires higher smelting technology, but it has the industrial added value of 10,000 yuan per unit product compared with ordinary ferrosilicon, and has the characteristics of low energy consumption and high product quality.

High-purity ferrosilicon can be used as a deoxidizer and alloy additive, mainly in productionSteel cord,Clean steel,Non-oriented silicon steel, oriented silicon steel, high-density plates, alloy steel and other high-end steels. Its deep-processed materials are widely used in electrical, automobile manufacturing and other fields.

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