Ferrochrome is an iron alloy with chromium and iron as the main components. It is one of the main alloy agents used in the iron and steel industry. In addition to the main components of chromium and iron, it also contains carbon, silicon, sulfur, phosphorus and other impurities. Ferrochrome contains 55%-75% chromium, according to the carbon content is divided into high carbon (4%-10%C), medium carbon (0.5%-4%C), low carbon (>0.15%-0.5%C) and micro-carbon (≤0.15%C) ferrochrome. High carbon ferrochrome is also known as carbon ferrochrome, medium, low, micro carbon ferrochrome is also known as refined ferrochrome. A high carbon ferrochrome produced with low ratio of ferrochrome, containing CR50%-55% known as the charge grade ferrochrome, and N2%-10% of nitrogenous ferrochrome used as nitrogen alloying agent, also known as ferrochrome nitride.