Ferrosilicon FeSi 75/65 | High Purity Silicon Iron for Steel Refining, Alloy

Steelmakers and foundries frequently face operational challenges when using ferrosilicon:

• Silicon yield loss due to oxidation and fines
• Inconsistent silicon addition affecting alloy steel quality
• Graphitization and melt uniformity issues in cast iron production
• Increased costs from repeated alloying corrections

Ferrosilicon FeSi 75/65 from ZhenAn is designed to deliver high silicon purity, precise particle sizing, and industrial-grade consistency, ensuring reliable steel refining, alloying, and casting performance.

• Silicon (Si): approx. 65%
• Moderate deoxidation strength suitable for standard steel grades
• Supports carbon steel, low-alloy steel, and conventional foundry iron
• Optimized for predictable melt behavior and cost-efficiency

• Silicon (Si): approx. 75%
• Strong deoxidizer for high-grade and alloy steels
• Fast melting with high silicon recovery
• Ideal for stainless steel, specialty alloys, and low-oxygen steel grades

Selecting the appropriate FeSi grade ensures stable steel chemistry, consistent alloying, and reduced production variability.

Chemical composition can be tailored for specific steel grades or foundry requirements.

• 10–50mm – fine granules for rapid melting in ladle treatment and secondary metallurgy
• 10–100mm – standard size for EAF, BOF, and foundry charging

Precise particle sizing minimizes fines, improves silicon recovery, and ensures consistent furnace performance.

• Primary and secondary deoxidation in carbon and alloy steels
• Silicon trimming for precise chemistry control
• Supports clean steel production with reduced inclusions

• Graphitization promoter in gray and ductile iron
• Stabilizes melt fluidity and improves casting surface quality
• Provides predictable silicon input for repeatable foundry results

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

ZhenAn manufactures Ferrosilicon FeSi 75/65 via submerged electric arc furnace smelting, combining:

• High-purity quartz
• Low-impurity carbon reductants
• Controlled smelting, tapping, and cooling parameters

Post-production processes include crushing, grading, magnetic separation, and batch chemical verification, ensuring consistent industrial-grade performance.

Each batch of Ferrosilicon FeSi 75/65 is rigorously tested for:

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

This ensures furnace efficiency, optimized alloy usage, and reliable metallurgical results.

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

Packaging protects against moisture and oxidation, maintaining FeSi quality during storage and transport.

• 30+ years of ferroalloy production expertise
• Specialized in steelmaking-grade, foundry-grade, and alloying FeSi
• Flexible specifications and particle sizes
• Reliable long-term industrial supply

ZhenAn works with customers who prioritize stable metallurgical performance, high silicon recovery, and process reliability.

FeSi 65 has moderate silicon content and slower reaction, suitable for standard alloy steel and cast iron. FeSi 75 has high silicon content, fast melting, and stronger deoxidation, ideal for high-grade alloy steels.

10–50mm granules are preferred for rapid and uniform dissolution.

Yes. Both grades improve graphitization, melt stability, and casting quality.

Through controlled electric arc furnace smelting, batch chemical verification, and precise particle sizing.

Yes. ZhenAn can adjust silicon content, impurity limits, and granule sizes according to steel grade, furnace type, or metallurgical process.