High-Purity Ferrosilicon 55 | Industrial FeSi Alloy for Steel Deoxidation, Casting & Chemical Use | 10–100mm / 10–220mm

In steelmaking and metallurgical operations, silicon serves as a critical deoxidizer and alloying element. Common challenges include:

• Silicon loss due to oxidation or fines during furnace charging
• Inconsistent silicon addition affecting steel chemistry and alloy uniformity
• Melt instability and graphitization issues in cast iron
• Excessive costs from re-alloying to reach target chemical composition

High-Purity Ferrosilicon 55 from ZhenAn addresses these challenges by providing controlled silicon content, uniform granule sizes, and industrial-grade reliability, enabling efficient steel deoxidation, precise alloying, and consistent casting performance.

• Silicon (Si): approx. 55%
• Moderate deoxidation strength, suitable for carbon steel and low-alloy steel
• Supports ductile and gray iron casting
• Optimal balance between performance and cost-efficiency

FeSi 55 ensures stable silicon input, predictable furnace performance, and reduced process variability.

Composition can be customized to meet specific steel grades, furnace types, or chemical applications.

• 10–100mm – standard size for EAF, BOF, and foundry charging
• 10–220mm – coarse granules for bulk furnace addition, slower silicon release

Precise particle sizing minimizes fines, improves silicon recovery, and ensures uniform melting, supporting industrial consistency.

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

• Promotes graphitization in gray and ductile iron
• Stabilizes melt fluidity and casting surface quality
• Provides consistent silicon input for repeatable foundry results

• Base silicon for specialty alloys
• Reducing agent in metallurgical reactions
• Raw material for silicon-based chemicals

ZhenAn produces High-Purity Ferrosilicon 55 using submerged electric arc furnace technology, including:

• High-purity quartz as silicon source
• Low-impurity carbon reductants
• Controlled smelting, tapping, and cooling cycles

Post-production processing involves crushing, screening, magnetic separation, and batch chemical verification, ensuring industrial-grade consistency and reliable silicon recovery.

Each batch of High-Purity Ferrosilicon 55 undergoes rigorous QC:

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

This guarantees furnace efficiency, optimized alloy use, and predictable metallurgical performance.

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

Packaging prevents moisture absorption and oxidation, preserving FeSi 55 quality during storage and transportation.

• 30+ years of ferroalloy manufacturing experience
• Focused on steelmaking-grade, foundry-grade, and chemical-grade FeSi
• Flexible specifications and granule sizes
• Reliable long-term industrial supply

ZhenAn partners with buyers who require stable metallurgical performance, high silicon recovery, and consistent industrial quality.

What is FeSi 55 mainly used for?
FeSi 55 is used for steel deoxidation, alloying, cast iron production, and silicon-based chemical processes, especially where moderate silicon content is required.

Which particle size is suitable for ladle or secondary metallurgy?
10–100mm granules are standard, while 10–220mm coarse granules are used for bulk furnace addition with slower silicon release.

Can FeSi 55 be used in ductile iron casting?
Yes. It improves graphitization, melt stability, and casting quality.

How does ZhenAn ensure consistent FeSi quality?
Through submerged electric arc furnace smelting, batch chemical verification, and precise particle sizing.

Can FeSi 55 specifications be customized?
Yes. ZhenAn can adjust silicon content, impurity limits, and granule sizes to meet specific furnace types, steel grades, or chemical applications.