Ferrosilicon: Ferrosilicon is made from coke, steel scraps, quartz (or silica) as raw materials and smelted in an electric furnace. Silicon and oxygen easily combine to form silica. Therefore, ferrosilicon is often used as a deoxidizer in steelmaking. At the same time, since SIO2 releases a large amount of heat when it is generated, it is also beneficial to increase the temperature of molten steel while deoxidizing. Ferrosilicon is used as an alloying element. It is widely used in low alloy structural steel, bonded steel, spring steel, bearing steel, heat-resistant steel and electrical silicon steel. In addition, ferrosilicon is often used as a reducing agent in ferroalloy production and chemical industry. The silicon content reaches 95%-99%. Pure silicon is commonly used to make single crystal silicon or prepare non-ferrous metal alloys.
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Ferromanganese: Ferromanganese is made from manganese ore. Smelted in a blast furnace or electric furnace. Ferromanganese is also a commonly used deoxidizer in steel. Manganese also has the function of desulfurizing and reducing the harmful effects of sulfur. Therefore, almost all kinds of steel and cast iron contain a certain amount of manganese. Ferromanganese also serves as an important alloying agent. Widely used in structural steel. Tool steel, stainless heat-resistant steel. Wear-resistant steel and other alloy steels.
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Other ferroalloys: except ferrosilicon and ferromanganese. There are many other ferroalloys, such as ferrochromium, ferrotungsten, ferromolybdenum, ferrotitanium, ferrovanadium, ferroboron, calcium silicon alloy, etc. Most of these ferroalloys are smelted in electric furnaces. Some of their elements are relatively rare and expensive or the production process is complicated. Therefore, although they have strong deoxidizing capabilities during use, they are not used as deoxidizers. It is mainly used as alloying agent.
