According to different carbon content, ferrochromium is divided into high-carbon ferrochromium including charging grade ferrochromium (C≦10%), medium-carbon ferrochromium (C≦4.0%), low-carbon ferrochromium (C≦0.5%), micro carbon Ferrochrome (C≦0.15%) etc. Commonly used silicon-chromium alloy, ferrochromium nitride and so on. Ferrochromium is mainly used as an alloy additive for steelmaking, which was added in the late stage of steelmaking. For smelting stainless steel and other low-carbon steel grades, low- and micro-carbon ferrochromium must be used, so refined ferrochromium production was once developed on a larger scale.
Due to the improvement of the steelmaking process, when using the AOD method (see Out-of-furnace refining) to produce stainless steel and other steel grades, the carbon ferrochromium (mainly charge grade ferrochromium) is used to install the furnace, so only low and micro Carbon ferrochromium adjusts its composition, so the focus of ferrochromium production is to refine carbon ferrochromium.
