Silicon metal is a critical raw material used in aluminum alloys, silicones, solar panels, and electronics. As a leading ferroalloy manufacturer, Beifang Alloy specializes in high-purity silicon metal production. This article explores the production process, procurement needs, industry trends, buyer’s guide, and supplier selection to help businesses make informed decisions.
1. Silicon Metal Production Process
Silicon metal is produced through carbothermic reduction of high-purity quartz in an electric arc furnace. The key steps include:
Step 1: Raw Material Preparation
- Quartz (SiO₂): Must have >99% purity for high-grade silicon.
- Carbon Reductants: Petroleum coke, coal, or wood chips.
- Electrodes: Graphite or carbon electrodes conduct electricity.
Step 2: Smelting in Submerged Arc Furnace
- Quartz and carbon are mixed and heated to 2000°C.
- Chemical reaction:
SiO₂ + 2C → Si + 2CO
- Impurities (Fe, Al, Ca) are removed via slagging.
Step 3: Refining & Casting
- Molten silicon is tapped, refined, and poured into molds.
- Further purification (leaching, crushing) ensures 99.0%–99.99% Si content.
Step 4: Packaging & Quality Control
- Silicon metal is crushed, sized, and packed per customer requirements.
- Lab testing confirms chemical composition (Si%, Fe, Al, Ca levels).
2. Procurement Needs for Silicon Metal
Buyers in aluminum, chemical, and solar industries must consider:
- Purity Grades:
- Metallurgical Grade (98-99% Si) – For aluminum alloys.
- Chemical Grade (99%+ Si) – For silicones & polysilicon.
- Solar Grade (99.9999% Si) – For photovoltaic cells.
- Particle Size: Lumps (10-100mm), granules (1-10mm), or powder.
- Impurity Limits: Low Fe, Al, Ca for better alloy performance.
- Supply Reliability: Consistent quality & on-time delivery.
3. Industry Research: Silicon Metal Market Trends
- Growing demand from solar energy, EVs, and electronics.
- China dominates production (70% of global supply).
- Energy costs impact pricing (smelting is electricity-intensive).
- Sustainability focus: Green silicon production using renewable energy.
Why Choose Beifang Alloy?
✔ High-purity silicon (98%-99.99%)
✔ Strict quality control (ISO, SGS certified)
✔ Competitive pricing & bulk supply
4. Silicon Metal Procurement Guide
Step 1: Define Specifications
- Choose grade (metallurgical/chemical/solar) and size.
- Set acceptable impurity levels (Fe, Al, Ca, etc.).
Step 2: Supplier Evaluation
- Check production capacity, certifications, and testing methods.
- Request samples & lab reports before bulk orders.
Step 3: Logistics & Contracts
- Negotiate FOB, CIF, or EXW terms.
- Ensure proper packaging (moisture-proof, sealed bags).
Step 4: Long-Term Partnership
- Secure volume discounts & flexible contracts.
5. Supplier Comparison: Beifang Alloy vs. Others
| Criteria |
Beifang Alloy |
Other Suppliers |
| Purity Range |
98%-99.99% Si (all grades) |
Limited to metallurgical/chemical grade |
| Quality Control |
ISO-certified, batch testing |
Inconsistent impurity control |
| Pricing |
Competitive, bulk discounts |
Hidden fees in logistics |
| Delivery |
Global shipping, fast turnaround |
Delays due to third-party reliance |
| Support |
24/7 technical & order assistance |
Limited customer service |
Why Beifang Alloy?
✅ Direct factory prices – No intermediaries
✅ Customized silicon metal solutions
✅ Reliable supply for aluminum, solar, and chemical industries
Understanding the silicon metal production process and procurement factors ensures optimal quality and cost-efficiency. Beifang Alloy delivers high-purity silicon metal with strict quality control, making us a trusted global supplier.
📞 Contact Us Today!
🌐 www.beifangalloy.com
✉ Email: info@hnxyie.com
