Industrial Ferrosilicon 55/65 | Premium FeSi Alloy for Steelmaking, Casting &

For many steel mills and foundries, the challenge is not maximum silicon content, but controlled silicon addition with predictable recovery and cost discipline.
Common operational issues include:

• Overuse of high-silicon alloys where they are not technically required
• Silicon fluctuation caused by excessive fines or slow-melting lumps
• Inconsistent graphitization in cast iron melts
• Rising alloy costs without measurable metallurgical benefit

Industrial Ferrosilicon FeSi 55 / FeSi 65 provides a balanced silicon source that supports stable metallurgy while optimizing alloy consumption across steelmaking, casting, and chemical processes.

• Silicon (Si): approx. 55%
• Moderate deoxidation strength
• Lower unit silicon cost
• Suitable for carbon steel and basic alloy adjustment

• Silicon (Si): approx. 65%
• Faster dissolution and higher silicon yield
• Improved graphitization performance
• Preferred in foundry iron and refined steel grades

Choosing the correct FeSi 55 or FeSi 65 grade helps mills avoid unnecessary alloy upgrades while maintaining metallurgical reliability.

Composition can be adjusted to meet specific furnace or end-product requirements.

• 10–50mm FeSi granules
  • Rapid melting
  • Ideal for ladle treatment and induction furnaces
• 10–100mm FeSi lumps
  • Balanced melting speed
  • Common in EAF and foundry charging
• 10–220mm FeSi coarse granules
  • Bulk furnace charging
  • Reduced oxidation during handling

Controlled sizing minimizes fines, improves silicon recovery, and stabilizes furnace operations.

• Primary deoxidation in carbon steel
• Silicon trimming during tapping
• Support for consistent steel chemistry

• Graphitization promoter in gray iron
• Nodularity support in ductile iron
• Improved melt fluidity and casting surface quality

• Silicon carrier in chemical synthesis
• Reducing agent in metallurgical reactions
• Raw material for silicon-based compounds

ZhenAn produces FeSi 55 and FeSi 65 using submerged electric arc furnace technology, combining:

• Selected quartz with controlled SiO₂ content
• Low-impurity reductants
• Stable smelting and cooling parameters

Post-production steps include crushing, grading, magnetic separation, and batch-level chemical analysis, ensuring suitability for continuous industrial consumption.

Every batch of Ferrosilicon FeSi 55 / FeSi 65 is monitored for:

• Consistent silicon percentage
• Low sulfur and phosphorus
• Controlled aluminum levels
• Uniform particle size distribution

This reduces slag instability, melt variation, and re-alloying costs in production.

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

Packaging is designed to prevent moisture uptake and oxidation during storage and transport.

• Over 30 years of ferroalloy manufacturing experience
• Focus on steelmaking and foundry-grade FeSi
• Customizable chemistry and granule sizing
• Stable long-term supply for industrial buyers

ZhenAn partners with customers seeking process consistency rather than short-term material substitution.

FeSi 55 is commonly used for cost-effective deoxidation and silicon adjustment in carbon steel and basic alloy steel production.

FeSi 65 is preferred when higher silicon recovery, faster melting, or improved graphitization is required, especially in foundry applications.

10–50mm granules are typically chosen for induction furnaces due to their fast and uniform melting behavior.

Yes. Both grades can serve as silicon carriers or reducing agents in selected chemical processes.

ZhenAn can adjust silicon content ranges, impurity limits, and particle size distribution based on customer process needs.