75 # ferrosilicon is often said to be 75A model ferrosilicon, 72 # ferrosilicon is often said to be 75C model ferrosilicon. Generally people say 75# and 72# ferrosilicon is only ferrosilicon silicon content of 75% and 72%. 75 ferrosilicon is silicon content of 74-80% is the so-called hard 75, 72 ferrosilicon is silicon content of 72-80% is the soft 75. 72 ferrosilicon is commonly used in aluminum factories.

Ferrosilicon is an essential deoxidizer in the steelmaking industry. In steelmaking, ferrosilicon is used for precipitation deoxidation and diffusion deoxidation. Brick iron is also used as an alloying agent in steelmaking. It is used as an inoculant and spheroidizing agent in the cast iron industry. In ductile iron production,75 ferrosilicon is an important inoculant (to help precipitate graphite) and spheroidizing agent. It is used as a reducing agent in the production of ferroalloys. Not only is there a high chemical affinity between silicon and oxygen, but high silica ferrosilicon has a very low carbon content. Therefore, high silica ferrosilicon (or silica alloy) is a kind of reducing agent commonly used in the production of low carbon ferroalloys in the ferroalloy industry.75 Ferrosilicon is often used in the high temperature smelting of magnesium metal in the Pijiang method of magnesium smelting to replace the magnesium in CaO.MgO, and every ton of magnesium metal produced will consume about 1.2 tons of ferrosilicon, which plays a great role in the production of magnesium metal. Uses in other aspects. Finely ground or atomized processed ferrosilicon powder can be used as a suspension phase in the mineral processing industry. It is used as a coating for welding rods in the welding rod manufacturing industry. High silica ferrosilicon can be used in the chemical industry to manufacture products such as silicone .