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zh Ferrosilicon Supplier in China | FeSi 75, FeSi 72, Ferrosilicon Granules & Lump | Tiegu
Tiegu delivers high-quality, standards-compliant ferroalloys to international buyers. We supply ferrosilicon (FeSi) in various grades and sizes for steelmaking, foundry, and ductile iron applications. Available in lump, granule, and powder forms with export-ready packaging and reliable global supply.
Introduction
Ferrosilicon (FeSi)
Product Overview
Ferrosilicon (FeSi) is an important ferroalloy composed of iron and silicon. It is typically produced using quartz (silica), coke, and steel scrap as raw materials through electric furnace smelting.
As a commonly used deoxidizer, alloying agent, and inoculant in the steel and foundry industries, ferrosilicon is widely applied in steel production, grey iron casting, ductile iron casting, and ferroalloy manufacturing, helping to enhance the properties of metal materials.
Common Grades
| Grade | Silicon (Si) | Aluminum (Al) |
|---|---|---|
| FeSi75-A | ≥75% | ≤1.5% |
| FeSi75-B | ≥72% | ≤2.0% |
| FeSi70 | ≥70% | ≤2.0% |
| FeSi65 | ≥65% | ≤2.0% |
Note: Specific chemical compositions can be customized according to customer requirements. Please contact us to request the product datasheet. Contact us
Chemical Composition (Reference)
| Item | FeSi75 |
|---|---|
| Si | ≥75% |
| Al | ≤1.5% |
| C | ≤0.20% |
| P | ≤0.04% |
| S | ≤0.02% |
Actual chemical composition can be adjusted based on standards and customer specifications. Please contact us to request the product datasheet. Contact us
Product Specifications
Lump Specifications (Natural Lump)
10-50 mm
10-100 mm
50-100 mm
Natural Lump
Granule Specifications (Granules)
0-1 mm
1-3 mm
3-8 mm
3-10 mm
Powder Specifications (Powder)
100 Mesh
200 Mesh
Custom sieving available
Main Applications
1. Steelmaking Industry
Ferrosilicon is commonly used as a deoxidizer and alloying agent in steel production. It effectively removes oxygen from molten steel, improves steel purity, and enhances strength, hardness, elasticity, and wear resistance.
2. Foundry Industry
In grey and ductile iron casting, ferrosilicon serves as an inoculant and spheroidizing agent, promoting graphite precipitation and improving mechanical properties and microstructure stability.
3. Ductile Iron Production
Ferrosilicon granules are essential for producing ductile iron, enhancing spheroidization and inoculation effects to improve casting quality.
4. Ferroalloy Production
In certain ferroalloy manufacturing processes, ferrosilicon is used as a reducing agent.
Product Advantages
Stable silicon content
Low impurity levels
Uniform particle size
Consistent metallurgical performance
Suitable for steelmaking and foundry applications
Supports multiple size customizations
Export-compliant packaging
Packaging Options
Available according to customer requirements:
Bulk
25kg woven bags
1 MT Jumbo Bags
Bottom-Opening Jumbo Bags
Palletized packaging
Customized packaging
Storage and Transportation
Ferrosilicon should be stored in a dry, ventilated, and moisture-free environment.
Due to its hygroscopic nature, prolonged exposure to moisture may cause surface oxidation or powdering, affecting performance. Avoid rain, water contact, and damp conditions during transport and storage.
Quality Control
To ensure product quality, we provide:
Chemical composition analysis
Particle size inspection
Mill Test Certificate (MTC)
Third-party inspection (optional)
Please contact us to request the product datasheet.
Target Industries
Foundries
Ductile iron production facilities
Steel mills
Ferroalloy manufacturers
Machinery manufacturing
Automotive components
Supply Solutions
Tiegu delivers high-quality, standards-compliant ferroalloys to international buyers, ensuring reliable supply and consistent quality across the production chain.
Contact us to request product datasheets, pricing, and supply solutions.
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