The carbon content of ferrosilicon is lower than 0.1%, generally only 0.05 ~ 0.07%. What is the reason? Let's take a look:
A large number of data show that the higher the silicon content in ferrosilicon, the lower the carbon content. According to the data, when the silicon content in ferrosilicon is more than 30%, most of the carbon in ferrosilicon exists in the state of silicon carbide (SIC). Silicon carbide is easily oxidized and reduced by silicon dioxide or silicon oxide in the crucible. Silicon carbide in ferrosilicon, especially when the temperature is low, its solubility is very small, easy to precipitate and float up. Therefore, the silicon carbide left in ferrosilicon is very low, so the carbon content of ferrosilicon is very low.
