company news about What Are The Functions And Classifications Of Ferrosilicon?

Classification of ferrosilicon:

Ferrosilicon 75, which generally contains 75% silicon, has low carbon, phosphorus and sulfur content.

Ferrosilicon 72, usually ferrosilicon containing 72% silicon, with intermediate carbon, sulfur and phosphorus content.

Ferrosilicon 65, ferrosilicon containing 65% silicon, has relatively high carbon, sulfur and phosphorus contents.

The role of ferrosilicon in steelmaking:

First: used as deoxidizer and alloying agent in the steelmaking industry. In order to obtain steel with qualified chemical composition and ensure the quality of steel, deoxidation must be carried out in the final stage of steelmaking. The chemical affinity between silicon and oxygen is very large, so ferrosilicon is a strong deoxidizer used in steelmaking. Precipitation and diffusion deoxidation.

Second: used as inoculant and spheroidizing agent in the cast iron industry. Cast iron is an important metal material in modern industry. It is cheaper than steel, easy to melt and smelt, has excellent casting properties and is much better than steel in earthquake resistance. Adding a certain amount of ferrosilicon to cast iron can prevent the iron from It forms carbides and promotes the precipitation and spheroidization of graphite. Therefore, ferrosilicon is an important inoculant and spheroidizing agent in the production of ductile iron.

Third: used as reducing agent in ferroalloy production. Not only is the chemical affinity between silicon and oxygen very high, but the carbon content of high-silicon ferrosilicon is very low. Therefore, high-silicon ferrosilicon is a commonly used reducing agent in the ferroalloy industry when producing low-carbon ferroalloys.

Fourth: The main use of ferrosilicon natural block is as an alloying agent in steel production. It can improve the hardness, strength, and corrosion resistance of steel, and can also improve the weldability and processability of steel.