Ferrosilicon
Professional Ferrosilicon Manufacturer
Ferrosilicon (FeSi) is an alloy composed of silicon (45%-75%) and iron, widely used as a deoxidizer and alloying agent in steelmaking. As a leading ferrosilicon manufacturer in China, Fengyang Ferroalloy has over 20 years of industry experience, specializing in providing high-purity, high-stability ferrosilicon products to meet the needs of global steel, casting, and new energy industries.

Ferrosilicon parameters
Model Number: FeSi65, FeSi70, FeSi72, FeSi75
Material: Si, AI, C, P, S, Fe
Shape: Powder, Granule, Lumps, Briquette
Category Size: 1-3mm,10-20mm,10-50mm,10-100mm,
Customisation Accepted
Customisation Accepted
Packing: 1 Mt Bag
Usage: Deoxidizer, Alloying agent, Inoculant
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High Purity Ferrosilicon (W-GCFeSi)
High Purity Ferrosilicon (W-GCFeSi) is a premium ferroalloy with 75-80% silicon content and exceptionally low impurities (C≤0.012%, S≤0.004%, Al≤0.30%). Designed for critical applications, it...
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Ferrosilicon 65 (FeSi65)
Ferrosilicon 65 (FeSi65) is a cost-effective ferroalloy containing 65%-70% silicon, optimized for steelmaking, foundry applications, and specialty alloy production. As a leading ferrosilicon...
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Ferrosilicon 70 (FeSi70)
Ferrosilicon 70 (FeSi70) is a high-grade ferroalloy with 70%-75% silicon content, designed for precision applications in steelmaking, casting, and specialty alloys. With low aluminum (≤1.5%) and...
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Ferrosilicon 72 (FeSi72)
Ferrosilicon 72 (FeSi72) is a premium ferroalloy with 72%-75% silicon content, offering exceptional performance in steelmaking, casting, and specialty alloy production. With low aluminum (≤1.5%)...
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Ferrosilicon 75 (FeSi75)
Ferrosilicon 75 (FeSi75) is a top-tier ferroalloy with 75%-80% silicon content, ideal for high-performance applications in steelmaking, casting, and specialty alloys. With low aluminum (≤1.5%) and...
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Ferrosilicon 75 Low Al (FeSi75 Low Al)
FeSi 75 Low Al 0.5 FeSi 75 Low Al 0.5 is a type of ferroalloy primarily used in the steel and iron industries, especially for deoxidation and alloying purposes. It is composed mainly of iron (Fe)...
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High Purity Ferrosilicon (FeSi HP)
High Purity Ferrosilicon (FeSi HP) is a next-generation ferroalloy engineered for industries requiring ultra-low trace elements and exceptional consistency. With silicon content up to 85% and...
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Ferrosilicon Powder
Ferrosilicon powder is an alloy powder composed of silicon (45%-90%) and iron, serving as a "golden supporting player" in steelmaking, casting, and renewable energy sectors. With 20 years of...
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The Specifications of Ferrosilicon
Tailored to Your Needs, Full Grade Customization Available!
Our ferrosilicon products cover various grades , with silicon content adjustable from 45% to 75%.
Strict control of impurities such as aluminum, calcium, and phosphorus is maintained (see table below).
|
Grades |
Chemical Composition(%) |
||||
|
Si |
AI |
C |
P |
S |
|
|
≥ |
≤ |
||||
| Ferrosilicon FeSi 65 | 65 | 1.5 | 0.2 | 0.05 | 0.02 |
|
Ferrosilicon FeSi 70 |
70 |
1.5 |
0.2 |
0.04 |
0.02 |
|
Ferrosilicon FeSi 72 |
72 |
1.5 |
0.2 |
0.04 |
0.02 |
|
Ferrosilicon FeSi 75 |
75 |
1.5 |
0.2 |
0.035 |
0.02 |
|
Ferrosilicon FeSi 75 Low Al |
75 |
0.5 |
0.2 |
0.035 |
0.02 |
Third-party inspection reports are available upon request for full transparency and traceability!
Different sizes of ferrosilicon
Flexible Solutions for Your Production Needs!
| Classification | Size Range | Application Scenarios | Melting/Processing Characteristics |
|---|---|---|---|
| Lump | 10-100 mm |
Large blast furnaces, ensuring uniform reactions |
Stable reactions in high-temperature environments |
| Coarse | 10-50 mm |
Large-scale industrial applications (e.g., construction, metallurgy) |
Enhanced structural integrity in bulk processing |
| Granular | 1-10 mm |
Electric arc furnaces, improving melting efficiency by 30% |
Faster melting due to increased surface area exposure |
| Powder | ≤1 mm |
Powder coatings (automotive, aerospace), food processing, pharmaceuticals |
Ultrafine particles for high adhesion and rapid melting; application in advanced manufacturing |

Production Process & Quality Assurance
Green Smelting, Consistent Quality!

Process
Utilizing electric arc furnace technology, melting point is precisely controlled at 1200-1350°C, combined with automated batching systems to ensure consistent composition in every batch.
Eco-friendly Certification
ISO 14001 Environmental Management System certified, with low emissions throughout production and 95% recycling rate for wastewater and exhaust gases.

Wide Applications of Ferrosilicon
From Traditional Industries to Emerging Fields, We Cover It All!
Steel Industry
Deoxidizer, alloying additive (over 70% of demand).
01
Casting Industry
Nodulizer for ductile iron, improving casting strength.
02
New Energy
Raw material for photovoltaic silicon wafers and lithium battery anodes.
03
Chemical Industry
Core material for silicone and silicone resin production.
04
Why Choose Fengyang’s Ferrosilicon?
Advantages
- High Purity: Impurity levels below industry standards, enhancing final product performance.
- Rapid Reaction: Uniform particle size reduces melting time and energy costs.
- Corrosion Resistance: Improves steel’s oxidation resistance, extending service life.
Environmental Protection & Sustainability
Protecting Green Mountains and Clear Waters, We Take Responsibility!
- Green Production: Waste heat recovery systems reduce energy consumption by 15% per ton.
- Recycling: 100% of waste slag is recycled into building materials, achieving zero waste.
Technical Support & After-sales Service
Full Support, No Worries!
- Technical Team: Engineers with 20+ years of experience provide selection guidance and process optimization solutions.
- After-sales Guarantee: 24-hour response, free replacement for quality issues, and annual quality tracking reports.
Quality Stability & Consistency
Every Batch is a Commitment!
- Strict Quality Control: Real-time XRF spectrometer testing from raw materials to finished products ensures composition fluctuation ≤0.5%.
- Batch Traceability: Each bag comes with a unique serial number, supporting customer inspection and third-party re-inspection.
Packing and Shipping
Safe Delivery, Hassle-free!
Packaging: Double-layer waterproof woven bags (1000kg/bag), or customized as per customer requirements.
Shipping: Seamless land and sea transportation, 25 tons per 20GP container, with moisture-proof and shock-proof treatment.
Delivery Time: Orders are shipped within 14 days under normal circumstances, under FOB/CIF terms.

Weighing

Load trucking

Containerising

Loading the freighter

Transport by sea
Frequently Asked Questions (FAQ) About Ferrosilicon
Q: 1. What is ferrosilicon, and what is it used for?
A: Ferrosilicon is an alloy of iron and silicon, typically containing 45%-75% silicon. It is widely used as a deoxidizer and alloying agent in steelmaking, as a nodulizer in casting, and as a raw material in the production of photovoltaic silicon wafers and lithium battery anodes.
Q: 2. What grades of ferrosilicon do you offer?
A: We offer a wide range of ferrosilicon grades, including FeSi75 (72-80% Si) and FeSi65 (65-72% Si). Custom grades with specific silicon content and impurity levels (e.g., Al, Ca, P) are also available upon request.
Q: 3. Can you provide ferrosilicon with customized chemical compositions?
A: Yes, we specialize in customizing ferrosilicon to meet your specific requirements. Whether you need adjustments in silicon content or stricter control over impurities, we can tailor the composition to suit your production needs.
Q: 4. What forms and particle sizes are available?
A: We supply ferrosilicon in various forms, including lump (10-100mm), granular (1-10mm), and powder (≤1mm). Particle sizes can be customized to optimize melting speed and efficiency for your specific application.
Q: 5. How do you ensure the quality and consistency of your ferrosilicon?
A: We implement strict quality control measures, including real-time XRF spectrometer testing during production. Each batch is traceable with a unique serial number, and we provide third-party inspection reports to guarantee consistency and reliability.
Q: 6. Do you offer technical support for ferrosilicon applications?
A: Absolutely! Our team of engineers with 20+ years of experience provides comprehensive technical support, including product selection guidance, process optimization, and troubleshooting.
Q: 7. What packaging options do you provide?
A: We use double-layer waterproof woven bags (1000kg/bag) for standard packaging. Custom packaging options are also available to meet your specific requirements.
Q: 8. Is your ferrosilicon production environmentally friendly?
A: Yes, our production process is ISO 14001 certified. We utilize waste heat recovery systems and recycle 100% of our waste slag into building materials, ensuring minimal environmental impact.
Q: 9. What is the minimum order quantity (MOQ)?
A: Our MOQ is flexible, depending on the product grade and customization requirements. Please reach out to our sales team for detailed information.
Q: 10. Do you provide after-sales support?
A: Yes, we offer 24/7 after-sales support. In case of any issues, our team will respond within 24 hours and provide solutions, including replacements if necessary.
Q: 11. How do you handle international shipping and customs clearance?
A: We work with reliable logistics partners to ensure smooth international shipping and customs clearance. Our team will handle all documentation and keep you updated throughout the process.
Q: 12. Can I visit your factory for an inspection?
A: We welcome clients to visit our factory for inspections. Please schedule an appointment in advance, and our team will arrange a detailed tour of our facilities.
If you have any other questions, feel free to contact our support team.
We’re here to help you find the best ferrosilicon solutions for your needs!
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Get In Touch With Us
This is our contact information.
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Phone:+86 15137218200
WhatsApp:+8615137218200
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Email:info@fyalloy.com
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Address:100 Meters East Of The South Intersection Of Mengjiazhuang Village, Long'an District, Anyang City, Henan Province.
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