Products Description
Silicon Metal is a high-purity industrial material made by reducing high-grade quartz with carbon materials (such as coal, coke, or woodchips) in electric arc furnaces. It appears as shiny, silvery-gray metallic lumps and is widely used in metallurgy, electronics, chemicals, and solar industries. Its high chemical stability, low impurity levels, and excellent thermal resistance make it an essential component in numerous high-tech and industrial processes.
Specification
| Grade | Si (%) | Fe (%) | Al (%) | Ca (%) |
|---|---|---|---|---|
| 553 | ≥98.5 | ≤0.50 | ≤0.50 | ≤0.30 |
| 441 | ≥99.0 | ≤0.40 | ≤0.40 | ≤0.10 |
| 3303 | ≥99.3 | ≤0.30 | ≤0.30 | ≤0.03 |
| 2202 | ≥99.5 | ≤0.20 | ≤0.20 | ≤0.02 |
| 1101 | ≥99.6 | ≤0.10 | ≤0.10 | ≤0.01 |
Application
Aluminum Industry: As an alloying element to improve strength, hardness, and wear resistance in aluminum-silicon alloys
Chemical Industry: As a raw material for producing siloxanes, silicones, and silanes
Solar Industry: High-purity silicon is processed into polysilicon for photovoltaic cells
Electronics: Used in manufacturing semiconductors and integrated circuits
Steelmaking: Acts as a deoxidizer and improves metal cleanliness and mechanical properties
Treatment and Utilization
Crushing and Screening: After cooling, the silicon is broken into standardized sizes
Grading by Purity: Each batch is tested for impurity levels and sorted accordingly
Further Refining: In high-purity applications (e.g., solar/semiconductors), additional chemical purification (acid leaching or zone refining) is applied
Integration: The processed silicon is added to aluminum, steel, or chemical processes according to specific formulations and technical requirements
How Can You Ensure Silicon Metal Quality During Purchase?
Check Chemical Analysis Reports: Always request COA (Certificate of Analysis) showing Si content and impurity levels
Verify Supplier Certification: ISO certification and third-party inspection records ensure process quality
Request Samples: Before bulk purchase, test a sample for performance in your application
Look for Consistent Sizing and Clean Appearance: High-quality silicon metal has uniform grain size, minimal slag, and a metallic luster
Partner with Trusted Suppliers: Choose exporters with a solid reputation, traceable supply chains, and responsive customer service
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