Industrial Ferrosilicon 75 (FeSi 75) Alloy with 75% Silicon for Steelmaking

In high-volume steelmaking and alloy production, one of the most persistent operational challenges is silicon recovery volatility. Excess oxidation losses, inconsistent particle sizing, and impurity carryover can directly impact steel cleanliness, alloy yield, and furnace stability.

Industrial Ferrosilicon 75 (FeSi 75) is selected by steel mills and alloy producers that require high silicon content, fast dissolution, and predictable metallurgical behavior. With approximately 75% silicon, FeSi 75 delivers strong deoxidation capacity and precise silicon adjustment in both primary and secondary metallurgy.

ZhenAn supplies industrial-grade Ferrosilicon 75 in fine and coarse grain sizes from 10–220mm, supporting diverse furnace practices across steel, foundry, and chemical industries.

Compared with FeSi 55 or FeSi 65, Ferrosilicon 75 offers:

• Higher effective silicon yield per ton added

• Faster melting and reaction in EAF, BOF, and ladle metallurgy

• Reduced total alloy addition volume

• More accurate silicon targeting in alloy steel grades

For producers of spring steel, bearing steel, stainless precursors, and special alloy steels, FeSi 75 minimizes correction additions and improves process repeatability.

Chemical ranges can be customized to meet specific steel grades or chemical-industry requirements.

• 10–50mm – rapid dissolution for ladle and secondary metallurgy

• 10–100mm – standard steelmaking and foundry applications

• 10–220mm – bulk furnace charging and large-scale alloying

Accurate screening reduces fines, limits oxidation loss, and improves silicon recovery efficiency.

• Strong deoxidizer in carbon and alloy steel

• Silicon control in low-oxygen steel grades

• Support for clean steel and inclusion reduction

• Graphitization enhancement in gray and ductile iron

• Improved casting fluidity and surface quality

• Stable silicon source for repeatable melt chemistry

• Raw material for magnesium and silicon-based chemicals

• Reducing agent in specialized chemical processes

• Silicon carrier in metallurgical reactions

ZhenAn Ferrosilicon 75 is produced in submerged electric arc furnaces, using:

• High-purity quartz as silicon source

• Low-impurity carbon reductants

• Controlled smelting temperatures and tapping cycles

After smelting, the alloy undergoes crushing, grading, magnetic separation, and batch chemical analysis, ensuring consistency required by continuous steel production lines.

Each FeSi 75 batch is monitored for:

• Stable silicon content

• Low sulfur and phosphorus

• Controlled aluminum levels

• Uniform particle size distribution

This reduces furnace fluctuations, slag instability, and downstream alloy correction costs.

• 1 MT jumbo bags

• 25 kg bags on pallets

• Bulk shipment for long-term contracts

Packaging is designed to protect FeSi 75 from moisture absorption and oxidation during storage and transport.

• 30 years of ferroalloy manufacturing experience

• Focus on steelmaking and alloy-grade consistency

• Customizable chemistry and sizing

• Reliable supply for long-term industrial buyers

ZhenAn supports procurement teams seeking process stability, not spot-market variability.

FeSi 75 is primarily used for steel deoxidation, silicon adjustment, and alloy production, as well as in foundry and chemical industries.

FeSi 75 provides higher silicon concentration, faster melting, and higher silicon recovery, making it suitable for high-precision alloy steel production.

10–100mm or 10–220mm sizes are commonly selected for EAF charging, depending on furnace capacity and charging method.

Yes. It improves graphitization and melt fluidity in both gray iron and ductile iron casting.

ZhenAn can adjust Si content, impurity limits, and particle size distribution to match specific furnace and product requirements.