Феррофосфор

Phosphorus is a harmful impurity for most steels. However, it has a special role to play in some cases. Such as some steel add phosphorus, can improve the strength of steel, corrosion resistance and workability, but increased the brittleness of steel. Phosphorus in cast iron can make the iron fluidity improvement, thus improving the casting performance and surface quality; grey cast iron containing 0.5% phosphorus, can improve its tensile strength. Wear-resistant cast iron containing about 0.15% phosphorus, can significantly improve its wear resistance.

I. Removal of sulphur and phosphorus
Ferro-phosphorus is one of the raw materials mainly used for removing sulphur and phosphorus-containing impurities in steelmaking. Because sulphur and phosphorus are both harmful elements to the performance of steel, the excessive content will lead to increased brittleness, reduced ductility, easy to crack and other defects of steel. In the steelmaking process, the addition of iron phosphorus can react with other raw materials such as carbon to generate a certain amount of gas, thus promoting the separation of slag and steel, which in turn can effectively remove elements such as sulfur and phosphorus in steel.
Second, adjust the alloy composition
Ferro-phosphorus as a raw material in the alloy, can well regulate the alloy composition. In steelmaking, adding an appropriate amount of ferrophosphorus can improve the hardness and strength of steel, while also increasing wear resistance and corrosion resistance. In addition, ferrophosphorus can also be used as a supplement to nickel, chromium and other elements in the alloy, so that the resulting steel has better performance and wider application value.
Third, improve the performance of steel
Ferro-phosphorus can also be added by controlling the amount and manner, thereby improving the performance of steel. For example, in the process of refining high-strength alumina refractories, ferrophosphorus can improve the aluminium content of steel, thereby enhancing the resistance of alumina refractories to acid corrosivity. In addition, ferrophosphorus can also affect the process properties and mechanical properties of steel by changing the organisational structure of crystals in steel, thus adapting to different application environments.
In conclusion, ferrophosphorus plays a very important role in steelmaking, mainly used in removing sulfur and phosphorus, adjusting alloy composition, and improving steel properties. In the future steelmaking industry, ferrophosphorus will continue to play an important role and contribute to the sustainable development of the steel industry.