Ferro Silicon 72% Lump 10-50mm - Raw Materials for Steel Production from China Suppliers & Factory
Product Introduction
Steelmaking Industry
Used as a deoxidizer and alloying agent. In order to obtain steel with qualified chemical composition and ensure its quality, deoxidation must be carried out in the final stage of steelmaking. The chemical affinity between silicon and oxygen is high, so ferrosilicon is a strong deoxidizer for precipitation and diffusion deoxidation in steelmaking. Adding a certain amount of silicon to steel can significantly improve its strength, hardness, and elasticity. Additionally, silicon iron powder is often used as a heating agent for steel ingot caps to improve the quality and recovery rate of steel ingots due to its ability to release a large amount of heat at high temperatures.
Cast Iron Industry
Used as an inoculant and spheroidizer. Cast iron is an important metal material in modern industry, cheaper than steel, easier to melt and smelt, with excellent casting performance and superior seismic resistance. Especially for ductile iron, its mechanical properties approach those of steel. Adding a certain amount of ferrosilicon to cast iron can prevent the formation of carbides in iron, promote the precipitation and spheroidization of graphite. Thus, it is an important inoculant and spheroidizing agent in ductile iron production.
Ferroalloy Production
Used as a reducing agent in the production of ferroalloys. Not only is there a high chemical affinity between silicon and oxygen, but the carbon content of high silicon ferrosilicon is also very low. Therefore, high silicon ferrosilicon (or silicon alloy) is a commonly used reducing agent in the production of low-carbon ferroalloys in the ferroalloy industry.
Magnesium Smelting
75# ferrosilicon is commonly used in the high-temperature smelting process of magnesium metal in the Pidgeon process, where CaO is added replacing magnesium in MgO. It consumes about 1.2 tons of ferrosilicon for every ton of metallic magnesium produced, playing a significant role in metallic magnesium production.
Key Market Consumption Insights
Among these applications, the steelmaking industry, foundry industry, and ferroalloy industry are the largest users of ferrosilicon, consuming over 90% of silicon iron together. Among various grades of ferrosilicon, 75% ferrosilicon is currently the most widely used. In the steelmaking industry, approximately 3-5 kg of 75% silicon iron is consumed for every 1 ton of steel produced.
Frequently Asked Questions
Q: What are the primary industries that consume ferrosilicon?
The steelmaking industry, foundry (cast iron) industry, and ferroalloy industry are the largest consumers, accounting for over 90% of total ferrosilicon usage.
Q: Why is ferrosilicon used in the steelmaking process?
It is used as a strong deoxidizer and alloying agent. Deoxidation is essential in the final stage of steelmaking, and adding silicon significantly improves the strength, hardness, and elasticity of the steel.
Q: How does ferrosilicon benefit the cast iron industry?
In cast iron production, particularly ductile iron, ferrosilicon acts as an inoculant and spheroidizing agent. It prevents carbide formation and promotes the precipitation and spheroidization of graphite.
Q: What is the role of 75# ferrosilicon in magnesium production?
In the Pidgeon process for magnesium smelting, 75# ferrosilicon is used to replace magnesium in MgO. Producing one ton of metallic magnesium consumes approximately 1.2 tons of ferrosilicon.
Q: Which grade of ferrosilicon is most widely used, and what is its consumption rate?
75% ferrosilicon is the most widely used grade. In steelmaking, about 3 to 5 kg of 75% ferrosilicon is consumed for every single ton of steel produced.