Ferrosilicon is an iron alloy composed of iron and silicon. Nowadays, ferrosilicon has a wide range of applications. Ferrosilicon can also be used as an alloying element additive, widely used in low alloy structural steel, spring steel, bearing steel, heat-resistant steel, and electrical silicon steel. Ferrosilicon is commonly used as a reducing agent in ferroalloy production and chemical industry. But many people only understand the uses of ferrosilicon and do not understand the problems that may be found in the smelting and smelting of ferrosilicon. In order to deepen everyone's understanding of ferrosilicon, ferrosilicon suppliers will briefly analyze the reasons for the low carbon content in ferrosilicon.
The main reason why the carbon content of the melted ferrosilicon is relatively low is that the manufacturer uses coke as a reducing agent during the smelting of ferrosilicon, which makes the self baking electrode more prone to carbonization. Coke bricks are used to build the iron outlet and flow channel, and sometimes graphite powder is used to coat the ingot mold, and carbon sample spoons are used to take liquid samples. In short, there are obviously many opportunities to come into contact with carbon during the process of smelting ferrosilicon, from reaction in the furnace to iron production and pouring. The higher the silicon content in ferrosilicon, the lower its carbon content. When the silicon content in ferrosilicon is about 30%, the vast majority of carbon in ferrosilicon exists in the state of silicon carbide (SiC). Silicon carbide is easy to be oxidized by silicon dioxide or Silicon monoxide and reduced in the crucible. Silicon carbide in ferrosilicon, especially at low temperatures, has a low solubility and is prone to precipitation and floatation. So, the silicon carbide remaining in ferrosilicon is very low, so the carbon content of ferrosilicon is very low.
