The use of ferrosilicon alloy
2025,07,07
Ferrosilicon is an iron-silicon alloy produced by smelting coke, steel shavings, and quartz (or silica) in an electric furnace. As silicon readily combines with oxygen to form silicon dioxide (SiO₂), ferrosilicon serves as an effective deoxidizer in steelmaking. The formation of SiO₂ releases substantial heat, aiding in elevating molten steel temperature during deoxidation. Additionally, ferrosilicon functions as an alloying element additive, widely employed in low-alloy structural steel, spring steel, bearing steel, heat-resistant steel, and electrical silicon steel.
Ferrosilicon is commonly utilized as a reducing agent in ferroalloy production and chemical industries. Ferrosilicon powder, including specialized forms such as atomized and
Milled Ferrosilicon Powder, is particularly used in applications like dense medium separation. Market factors including ferro silicon price influence its commercial applications across sectors.
Steel industry
Deoxidizer: Strong deoxidation (precipitation/diffusion deoxidation), improves steel purity, and reduces gas element content
Alloying agent: significantly enhances the strength/hardness/elasticity of steel, applied to:
Structural steel (Si 0.4-1.75%)
Tool steel (Si 0.3-1.8%)
Spring steel (Si 0.4-2.8%)
Silicon steel (Si 2.81-4.8%)
Heating agent: Silicon iron powder is used for steel ingot caps to improve forming quality and recovery rate
Additional advantages: It has both desulfurization function, high specific gravity, strong penetration, and optimized continuous casting process
Cast iron industry
Fertility agent: promotes graphite precipitation and improves casting performance
Spheroidizing agent: a key additive for ductile iron that makes its mechanical properties similar to steel
Ferroalloy production
Reducing agent: High silicon ferrosilicon (low-carbon) reduces low-carbon ferroalloys by utilizing the high affinity of silicon oxygen
Magnesium metal smelting
Reduction medium: 75 # silicon iron is used for the Pidgeon process (consuming 1.2 tons of magnesium per ton) to replace magnesium in MgO
Other areas
Mineral processing: finely ground/atomized silicon iron powder as suspended phase
Welding material: coating composition of welding rod (anti foam, enhanced pressure coating)
Chemical Industry: High Silicon Silicon Silicon Silicon Synthesis Silicone Products
