Ferrosilicon 75 High Silicon Efficiency FeSi 75 Alloy for Fast Dissolution and

In alloy steel production and secondary refining, silicon is not only a deoxidizer, but also a critical alloying element.
Steelmakers frequently encounter the following challenges:

• Silicon yield loss caused by oxidation during tapping
• Inaccurate silicon adjustment in high-grade alloy steels
• Slow melting or excessive fines leading to slag instability
• Repeated alloy correction increasing cost and heat time

Silicon Iron Ferrosilicon 75 (FeSi 75) is selected when high silicon efficiency, fast dissolution, and predictable metallurgical response are required.

ZhenAn supplies high-purity FeSi 75 engineered for stable silicon recovery rather than nominal chemical values alone.

With a silicon content of approximately 75%, Ferrosilicon 75 provides:

• Strong and rapid deoxidation
• Higher effective silicon yield per ton
• Reduced total alloy addition volume
• Improved cleanliness in alloy and special steels

This makes FeSi 75 the preferred grade for bearing steel, spring steel, stainless precursors, and low-oxygen steel grades.

Chemical composition can be optimized according to furnace type and steel grade requirements.

• 10–50mm FeSi 75 granules
  • Fast and uniform melting
  • Suitable for ladle metallurgy and induction furnaces
• 10–100mm FeSi 75 lumps
  • Stable melting in EAF and BOF operations
  • Reduced oxidation loss during charging

Precise sizing improves silicon recovery efficiency and minimizes unreacted residues.

• Final deoxidation during tapping
• Silicon trimming in alloy and special steels
• Support for clean steel and inclusion control

• Graphitization promoter in gray iron
• Improved melt fluidity and casting quality
• Stable silicon input for ductile iron melts

• Silicon source for specialty alloys
• Reducing agent in metallurgical reactions
• Raw material for silicon-based industrial processes

ZhenAn produces Ferrosilicon 75 using submerged electric arc furnace smelting, combined with:

• Selected high-purity quartz
• Low-impurity carbon reductants
• Controlled tapping and cooling parameters

Each batch undergoes crushing, screening, magnetic separation, and chemical analysis, ensuring consistency for industrial-scale steel production.

ZhenAn FeSi 75 is controlled for:

• Stable silicon content range
• Low sulfur and phosphorus
• Controlled aluminum levels
• Consistent particle size distribution

This minimizes process fluctuation, slag instability, and re-alloying costs in steel plants.

• 1 MT jumbo bags
• 25 kg bags with palletized loading
• Bulk shipment for long-term contracts

Packaging is designed to limit moisture absorption and oxidation during transport and storage.

• 30+ years of ferroalloy manufacturing experience
• Focus on steelmaking-grade FeSi performance
• Flexible specifications and size control
• Reliable long-term supply for industrial buyers

ZhenAn works with customers who prioritize process stability over short-term price variance.

FeSi 75 is mainly used for steel deoxidation, silicon alloying, and foundry iron production, especially where high silicon efficiency is required.

FeSi 75 has higher silicon content and stronger deoxidation ability, resulting in faster melting and higher silicon recovery.

10–50mm granules are commonly preferred due to rapid dissolution and uniform reaction.

Yes. It supports graphitization and melt consistency in both ductile and gray iron.

ZhenAn can customize chemical limits and particle size distribution based on furnace type and application.