The role of silicon carbide in smelting

1. Deoxygenation

In steel smelting, silicon carbide can react with oxygen to produce CO and SiO2, playing a role in deoxidation. In addition, silicon carbide can promote the emergence of inclusions and improve the quality of steel.

2. Desulfurization

Silicon carbide can also play a role in desulfurization in steel smelting. Because silicon carbide can react with sulfur to form SiS2 and CS2, thereby removing sulfur.

3. Toughening

Adding silicon carbide to the production of steel can enhance its toughness and ductility. This is because silicon carbide can react with iron to form iron carbides, changing the structure of steel and increasing its deformability.

4. Alloying

Silicon carbide is an important raw material for ferritic alloys. Adding silicon carbide to steel can increase the content of alloying elements, further improving the strength and hardness of the steel.