Silicon Iron 55/75 from ZhenAn offers high-quality, industrial-grade FeSi granules designed to provide precise silicon content, reliable deoxidation, and consistent alloying performance for steelmakers, cast iron producers, and chemical industry users.
Silicon Iron 55/75 FeSi Overview
Silicon Iron 55/75 is a high-purity ferroalloy composed primarily of silicon (Si) and iron (Fe), with a silicon content range of 55–75%. It is engineered for alloy steel production, cast iron refinement, and chemical applications requiring metallurgical-grade silicon.
The product is available in 10–100mm granules, making it suitable for electric arc furnaces (EAF), ladle metallurgy, and converter steelmaking processes.
Key Specifications
| Property |
Typical Value |
| Silicon (Si) |
55–75% |
| Iron (Fe) |
Balance |
| Particle Size |
10–100mm |
| Impurities |
Low Phosphorus & Sulfur |
| Form |
Industrial-grade granules |
Applications of Silicon Iron 55/75 FeSi
Alloy Steel Production
Precise silicon control is essential for achieving target mechanical properties in alloy steels. FeSi 55/75 helps optimize hardness, tensile strength, and corrosion resistance without compromising ductility.
Cast Iron Refinement
Adding Silicon Iron 55/75 improves fluidity, reduces shrinkage defects, and refines graphite morphology, resulting in stronger, machinable castings with consistent surface quality.
Chemical and Metallurgical Use
FeSi 55/75 serves as a raw material in chemical reactions requiring high-purity silicon, including the production of silicates, silicon-based chemicals, and specialty alloys.
Why Choose ZhenAn's Silicon Iron 55/75?
- High Purity & Consistency – Silicon content tightly controlled between 55–75% for predictable results
- Versatile Particle Sizes (10–100mm) – Ensures rapid melting and uniform distribution in molten metal
- Low Impurities – Sulfur and phosphorus kept minimal to avoid compromising steel and cast iron quality
- Industrial-Grade Reliability – Produced in electric arc furnaces with high-grade raw materials under strict quality control
- 30+ Years of Experience – ZhenAn is a globally trusted supplier of ferroalloys for steel and foundry industries
Production Process: High-Purity EAF Granules
ZhenAn produces Silicon Iron 55/75 using high-purity quartz and iron sources in electric arc furnaces, ensuring consistent silicon content across batches, low levels of impurities (S, P, and other trace elements), and controlled particle size for predictable reaction kinetics and efficient deoxidation.
This process guarantees reliable performance in alloy steel, cast iron, and chemical applications.
Industrial Advantages of FeSi 55/75
- Enhanced Steel & Cast Iron Quality – Reduces porosity and inclusions, ensuring superior mechanical properties
- Cost-Efficient Alloying – High silicon yield reduces the total amount of ferroalloy needed per ton of metal
- Optimized Melting Performance – Large particle range (10–100mm) accelerates dissolution in molten metal, improving furnace efficiency
- Multi-Application Versatility – Suitable for EAF, ladle addition, converter steelmaking, cast iron, and chemical applications
Frequently Asked Questions
What does "55/75" mean in Silicon Iron 55/75?
It represents the silicon content range, 55–75%, ensuring flexibility for different metallurgical processes.
Can FeSi 55/75 be used in both alloy steel and cast iron production?
Yes. Its wide silicon content range and granule size (10–100mm) make it suitable for various steel and cast iron applications.
How does Silicon Iron 55/75 improve mechanical properties?
Silicon strengthens the metal matrix, enhances hardness and tensile strength, and, when combined with other alloying elements, improves corrosion resistance.
What are the storage and handling recommendations?
Store in a dry, ventilated area to prevent oxidation. Standard industrial safety measures should be followed to minimize dust exposure.
How to select the right FeSi grade for my process?
Choose based on target silicon content and process requirements. For lower silicon, consider FeSi 45/50; for higher silicon requirements, FeSi 75/65 may be more suitable.
Conclusion: Reliable Silicon Iron 55/75 for Professional Metallurgy
ZhenAn's Silicon Iron 55/75 provides high-purity silicon, controlled granule size, and consistent industrial performance. Trusted by steel manufacturers, foundries, and chemical industry users worldwide, it ensures precise deoxidation, superior alloying, and improved metal quality. With over 30 years of expertise, ZhenAn remains a global leader in ferroalloy supply.
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