High-carbon ferromanganese is an alloy composed of manganese and iron. It is produced by blast furnace method and electric furnace. Electric furnace high-carbon ferromanganese is mainly used as deoxidizer, desulfurizer and alloy additives in steelmaking, and with the progress of medium and low carbon ferromanganese production technology, high carbon ferromanganese can also be used in the production of medium and low carbon ferromanganese. Ferromanganese is divided into three categories according to its different carbon content: low-carbon category: carbon is not more than 0.7%; Medium carbon: carbon not more than 0.7% to 2.0%; High carbon: carbon not more than 2.0% to 8.0%.