Ferroalloys, in a broad sense, refer to a product that is added to molten iron as a deoxidizer, elemental additive, etc. during steelmaking to give the steel certain characteristics or meet certain requirements. An intermediate alloy composed of iron and one or more elements, mainly used in steel smelting. In the steel industry, all intermediate alloys used for steelmaking, regardless of whether they contain iron or not (such as silicon calcium alloys), are generally referred to as "ferroalloys". Traditionally, certain pure metal additives and oxide additives are also included