The role of ferroalloys in iron and steel smelting

Ferroalloy is an intermediate alloy composed of a kind of iron and one or several elements used in iron and steel smelting. In fact, in the iron and steel industry, it is customary to refer to it as "silicon-carbon alloy, silicon calcium-manganese, etc.," regardless of whether it contains iron or not. ferroalloy". The main element of ferroalloy generally has a higher melting point, or its oxide is difficult to reduce, and it is difficult to smelt pure metal. If it is together with iron, it is easier to reduce and smelt. Ferroalloys are used in iron and steel smelting. The iron contained in it is not only harmless, but also beneficial because it is easy to melt in molten steel. Therefore, deoxidation and addition of alloys in the steelmaking process are mostly added in the form of ferroalloys. Ferroalloys are generally very brittle and cannot be used as metallic materials.
The role of iron alloys are:
① Deoxidizer. In the process of steelmaking, oxygen is removed from molten steel, and some ferroalloys can also remove other impurities in steel such as sulfur and nitrogen.
②Alloy additives. According to the requirements of the steel composition, alloying elements are added to the steel to improve the performance of the steel.
③ Inoculants. It is added to molten iron before cast iron casting to improve the crystallization structure of castings.
There are many types of ferroalloys. Each ferroalloy has different components and functions, and can be applied in different fields. Therefore, when users choose ferroalloys, they must first understand the functions of various ferroalloys, so that they can meet their own needs. Wait until a suitable ferroalloy.