Silicon Metal 421 Product Overview
Premium Silicon Metal 421 Grade Lump 10-100mm is a high-quality material primarily used in metallurgical processes such as steelmaking, ferroalloy production, and aluminum alloying. With a silicon purity of 421 grade, it provides reliable performance in various industrial applications that require a stable carbon and silicon source.
The 10-100mm lump size is specifically designed for use in electric arc furnaces (EAF), induction furnaces, and ladle refining, providing efficient carbon adjustment and improving the overall metal quality. Its low impurity levels contribute to cleaner molten metal and enhanced productivity, making it a preferred choice for large-scale industrial operations.
Key Advantages
- 421 grade ensures consistent chemical properties and high-quality metal production
- 10-100mm lump size allows for efficient dissolution in industrial furnaces
- Low sulfur, ash, and volatile matter reduce contamination and improve carbon recovery
- Ideal for steelmaking, ferroalloy production, and aluminum alloy manufacturing
- Reduces slag formation and improves furnace efficiency
- Enhances carbon recovery for better-quality end-products
Technical Specifications
| Parameter | Value |
|---|---|
| Product | Premium Silicon Metal 421 Grade Lump 10-100mm |
| Si Content | 98% |
| Grade | 421 |
| Form | Lump (10–100mm) |
| Impurities | Low sulfur, ash, and volatile content |
| Application | Steelmaking, Ferroalloy Production, Aluminum Alloying |
| Certifications | ISO 9001, SGS, COA |
Main Applications
1. Steelmaking
- Carbon and silicon addition in electric arc furnaces (EAF)
- Enhances deoxidation and carburizing efficiency
- Improves melt quality and consistency
2. Ferroalloy Production
- Silicon source for ferroalloy smelting
- Supporting ferrochrome, ferrosilicon, and other alloys
- Enhances overall metal recovery and refining
3. Aluminum Alloy Production
- Silicon addition to aluminum alloys
- Improves casting properties, fluidity, and strength
4. Foundry & Metalcasting
- Carbon and silicon additions for better casting quality
- Reduces defects and increases metal purity

Why Choose Premium Silicon Metal 421 Grade Lump 10-100mm?
✔ 421 grade ensures reliable and consistent performance in industrial applications
✔ Low impurities (sulfur, ash, and volatile matter) lead to cleaner metal production
✔ 10-100mm lump size promotes uniform dissolution and efficient carbon adjustment
✔ Ideal for large-scale steelmaking and ferroalloy production
✔ Enhances carbon recovery and improves furnace efficiency
Manufacturing Process
- Premium-quality silicon ore selection
- High-temperature calcination and purification to achieve 98% silicon purity
- Lump formation and precise sizing (10–100mm) for optimal use in furnaces
- Advanced impurity removal techniques to ensure low sulfur, ash, and volatile content
- Final inspection, testing, and packaging for secure delivery
Packaging & Logistics
- Available in 25 kg, 50 kg bags
- 1-ton jumbo bags available for bulk orders
- Palletized packaging for secure transportation
- Moisture-resistant packaging for export shipments
- Lead time: 7–15 business days
FAQ
Q1: What industries use Silicon Metal 421 Grade Lump?
It is widely used in steelmaking, foundries, ferroalloy production, and aluminum alloy manufacturing.
Q2: What is the ideal size for use in industrial furnaces?
The 10–100mm lump size is ideal for large-scale furnaces, ensuring efficient carbon and silicon distribution.
Q3: Is this product compliant with international standards?
Yes, it meets ISO 9001 standards, and each shipment is certified with SGS and COA documentation.
Q4: Can I get a sample before placing a large order?
Yes, we provide free samples for testing to ensure the product meets your requirements.
Call to Action
Contact us today for pricing, samples, or technical consultation on Premium Silicon Metal 421 Grade Lump 10-100mm. We provide consistent quality, reliable supply, and expert support for your industrial applications.

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