Ferro silicon 72, also known as FeSi72, is a ferroalloy composed of iron and silicon. It is a popular choice in the steelmaking industry due to its ability to increase the strength and durability of steel while also reducing its overall weight. Ferro silicon 72 is made by smelting a mixture of iron ore and silica in a blast furnace, with coke used as a reducing agent.

The composition of ferro silicon 72 typically ranges from 70-75% silicon and 25-30% iron, with trace amounts of other elements such as aluminum, calcium, and carbon. The high silicon content of FeSi72 makes it an effective deoxidizer and desulfurizer in the steelmaking process, helping to remove impurities and improve the quality of the final product.

In addition to its use in steelmaking, ferro silicon 72 is also used in the production of other alloys such as cast iron and aluminum-silicon alloys. It can also be used as a raw material in the chemical industry, particularly in the production of silicones and silanes.

One of the key advantages of ferro silicon 72 is its affordability compared to other alloying elements such as manganese and chromium. This makes it a popular choice for steelmakers looking to reduce costs without sacrificing quality. Additionally, its low carbon content makes it an environmentally friendly option for steel production.

However, there are also some drawbacks to using ferro silicon 72. Its high silicon content can lead to brittleness in steel if not used in the correct proportions, and it can also cause surface defects such as porosity if not properly handled during the casting process.

Overall, ferro silicon 72 is a versatile and cost-effective ferroalloy that plays an important role in the steelmaking industry. With its ability to improve the strength, durability, and overall quality of steel, it is likely to remain a popular choice for years to come.