Premium Ferrosilicon FeSi 75 | High Silicon Iron Alloy
Industrial-grade ferrosilicon alloy with 10–100mm particle size for steelmaking, foundry, and metallurgical applications.
Industrial Challenge: Maximizing Silicon Efficiency
In modern steel production, high-purity silicon addition is critical for both deoxidation and alloying. Common operational challenges include:
- Silicon yield loss due to oxidation and fines
- Inconsistent silicon addition affecting alloy steel quality
- Variable melt behavior in foundry iron and ductile castings
- Re-alloying and cost increases from poor silicon control
Premium Ferrosilicon FeSi 75 addresses these challenges with high silicon content, controlled particle size, and industrial-grade consistency, ensuring reliable steelmaking and metallurgical performance.
Why Choose FeSi 75: High Silicon Iron for Precision Alloying
FeSi 75 – Strong Deoxidizer and Alloying Agent
- Silicon (Si): approx. 75%
- Fast melting and high recovery efficiency
- Ideal for stainless steel, alloy steel, and low-oxygen steel grades
- Supports inclusion control and clean steel production
Industrial Applications of High-Purity FeSi 75
- Secondary metallurgy and ladle treatment
- Alloying for carbon and specialty steels
- Graphitization and melt control in gray and ductile iron
- Base silicon for metallurgical and chemical alloys
FeSi 75 provides process stability and predictable silicon yield, reducing over-addition and production variability.
Chemical Composition of Premium Ferrosilicon FeSi 75
| Element |
Typical Content (%) |
| Silicon (Si) |
74.0 – 80.0 |
| Iron (Fe) |
Balance |
| Aluminum (Al) |
≤ 2.0 |
| Carbon (C) |
≤ 0.20 |
| Phosphorus (P) |
≤ 0.04 |
| Sulfur (S) |
≤ 0.02 |
Composition can be customized for specific steel grades or metallurgical processes.
Particle Size Options: FeSi 75 Granules 10–100mm
- 10–50mm – rapid dissolution for ladle treatment and secondary refining
- 10–100mm – stable melting in EAF, BOF, and foundry charging
Precise particle sizing minimizes fines, improves silicon recovery, and ensures consistent melt behavior.
Applications of Premium FeSi 75 in Steel, Foundry & Metallurgy
Steelmaking: Deoxidation & Alloy Adjustment
- Fast deoxidation in carbon and alloy steels
- Silicon trimming for low-oxygen and high-purity grades
- Supports clean steel production and reduces inclusion formation
Foundry & Cast Iron Production
- Enhances graphitization in gray and ductile iron
- Stabilizes melt fluidity and casting surface finish
- Reliable silicon input for repeatable foundry results
Metallurgical & Chemical Applications
- Base silicon source for specialty alloys
- Reducing agent in metallurgical reactions
- Raw material for silicon-based chemical processes
Production Process: ZhenAn FeSi 75
ZhenAn manufactures Premium Ferrosilicon FeSi 75 using submerged electric arc furnace smelting with:
- High-purity quartz
- Low-impurity carbon reductants
- Controlled smelting and cooling cycles
Post-production processing includes crushing, screening, magnetic separation, and batch chemical verification, ensuring industrial consistency and predictable silicon yield.
Quality Control for Industrial FeSi 75
Each batch of Premium Ferrosilicon FeSi 75 is verified for:
- Stable silicon content
- Low sulfur and phosphorus
- Controlled aluminum and carbon
- Consistent particle size distribution
This guarantees furnace efficiency, optimized alloy use, and reliable metallurgical outcomes.
Packaging & Supply Options
- 1 MT jumbo bags
- 25 kg bags palletized
- Bulk shipment for long-term contracts
Packaging protects against moisture absorption and oxidation, maintaining FeSi 75 quality during storage and transport.
Why ZhenAn FeSi 75 is Trusted
- 30+ years of ferroalloy manufacturing expertise
- Focus on steelmaking, foundry, and alloying-grade FeSi
- Flexible specifications and granule sizes
- Reliable long-term industrial supply
ZhenAn supports buyers who prioritize stable metallurgical performance, high silicon recovery, and process reliability.
FAQ: Premium Ferrosilicon FeSi 75
What is FeSi 75 mainly used for?
FeSi 75 is primarily used for steel deoxidation, alloying, and foundry iron production, especially in high-purity or alloy steel grades.
How does FeSi 75 differ from FeSi 65?
FeSi 75 has higher silicon content and faster melting, providing stronger deoxidation and higher recovery efficiency.
Which FeSi 75 size is best for ladle treatment?
10–50mm granules are preferred for fast and uniform melting.
Can FeSi 75 be used in ductile iron casting?
Yes. It supports graphitization and melt consistency in both ductile and gray iron.
Can ZhenAn customize FeSi 75 specifications?
Yes. ZhenAn can adjust silicon content, impurity limits, and particle size distribution according to steel grade, furnace type, or metallurgical process.
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