Ferrosilicon FeSi 75/55 | Premium Grade Silicon Alloy for Steelmaking, Deoxidation & Casting | 10–100mm / 10–220mm
Steelmakers and alloy producers often struggle to balance silicon reactivity, recovery rate, and slag control during deoxidation and alloying. High-silicon alloys can react too aggressively, while lower grades may lead to incomplete deoxidation and unstable chemistry.
Ferrosilicon FeSi 75/55 from ZhenAn is engineered to address this challenge by offering controlled silicon content ranges (55–75% Si) combined with flexible particle sizing. This allows metallurgical teams to fine-tune silicon input according to furnace type, steel grade, and casting requirements.
FeSi 75/55 is a premium-grade silicon iron alloy designed for both high-silicon and medium-silicon metallurgical operations. By covering the 55–75% silicon range, this grade provides versatility for:
- Electric arc furnace (EAF) steelmaking
- Ladle metallurgy and secondary refining
- Casting and foundry operations
- Alloy steel and specialty steel production
| Item | Standard Range |
|---|---|
| Silicon (Si) | 55–75% |
| Iron (Fe) | Balance |
| Particle Size | 10–100mm / 10–220mm |
| Sulfur (S) | Low |
| Phosphorus (P) | Low |
| Grade | Industrial / Premium |
Oxygen-related defects such as inclusions, porosity, and inconsistent mechanical properties remain major concerns in steel production. FeSi 75/55 provides predictable deoxidation behavior by forming stable silicon oxides while maintaining controlled reaction intensity.
Steelmaking Benefits:
- Improved steel cleanliness
- Reduced slag instability
- Higher silicon recovery rate
- Consistent ladle chemistry
In alloy steel manufacturing, silicon directly affects strength, oxidation resistance, and toughness. The flexible Si range of FeSi 75/55 allows producers to adapt silicon input based on steel grade requirements without switching alloy systems.
Common applications include:
- Structural steels
- Engineering steels
- Low- and medium-alloy steels
In cast iron and steel casting, silicon iron 75/55 improves:
- Metal fluidity
- Graphite morphology control
- Surface finish quality
- Machinability
The availability of 10–220mm coarse sizes supports controlled silicon release in larger melting units.
ZhenAn supplies Ferrosilicon FeSi 75/55 in multiple size ranges to match different furnace designs:
- 10–100mm – Faster melting, suitable for EAF and ladle addition
- 10–220mm – Slower dissolution, ideal for large furnaces and casting operations
This reduces alloy loss and improves process efficiency.
- Flexible Silicon Range (55–75%) – One grade, multiple process solutions
- Low Sulfur & Phosphorus – Supports clean steel and defect reduction
- Electric Arc Furnace Smelting – Stable composition and quality consistency
- Strict Size Screening – Uniform granulation for predictable melting behavior
- 30+ Years of Ferroalloy Experience – Trusted by global steel and alloy producers
FeSi 75/55 is produced using selected quartz and iron sources in modern electric arc furnaces. Controlled smelting parameters ensure:
- Uniform silicon distribution
- Minimal impurity pickup
- Consistent physical structure
Post-smelting crushing and screening deliver precise particle size ranges.
- Improved silicon utilization efficiency
- Reduced alloy consumption per ton of steel
- Lower inclusion and defect rates
- Enhanced casting consistency
- Better control of secondary metallurgy
Ferrosilicon FeSi 75/55 from ZhenAn delivers controlled silicon input, flexible sizing, and premium-grade consistency for steelmaking, deoxidation, and casting operations. Designed to meet real-world metallurgical challenges, it helps steelmakers and alloy producers achieve stable chemistry, improved quality, and efficient production.
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