Ferro manganese is made by smelting manganese ore in a blast furnace or electric furnace. It is a commonly used deoxidizer in steel industry, and manganese can also desulfurize and reduce the harmful effects of sulfur. Therefore, almost all kinds of steel and cast iron contain a certain amount of manganese. As an important alloying agent, ferro manganese is also widely used in alloy steels such as structural steel, tool steel, stainless heat-resistant steel and wear-resistant steel.