Industrial Grade Silicon Metal 3303 / 1101
99.8% Pure Si Flakes & Granules for Steelmaking, Chemicals & Electronics | 553 / 441
Why Silicon Metal Is a Critical Process Variable
For industrial steelmakers, alloy producers, and high-purity material processors, silicon metal is more than a raw material—it's a process-controlling element that addresses key operational challenges.
- Fluctuating silicon recovery in steel deoxidation, leading to inconsistent alloy composition
- Uncontrolled oxidation losses caused by inappropriate particle size selection
- Impurity migration (Fe, Al, Ca) affecting product quality in both steel and electronic materials
- Batch-to-batch variability that complicates furnace control and dosing schedules
ZhenAn's Industrial Grade Silicon Metal 3303 / 1101 is engineered to address these real-world challenges, ensuring consistent performance, predictable melting behavior, and minimal contamination risk.
Product Overview & Application Positioning
ZhenAn supplies silicon metal in 3303 and 1101 grades, available as flakes and granules, with multi-size options 441 and 553. This allows users to align silicon input with furnace scale, reaction speed, and purity requirements while reducing operational variability and improving batch-to-batch consistency.
Target Applications:
- Alloy and carbon steel production
- Casting and foundry operations
- Electronics and photovoltaic materials
- Chemical intermediates and specialty organosilicon compounds
Grades & Purity Control
Each grade is designed with a specific industrial rationale, balancing cost, purity, and process tolerance.
Typical Chemical Composition (%)
| Grade |
Si |
Fe |
Al |
Ca |
| 3303 |
≥99.3 |
≤0.30 |
≤0.30 |
≤0.03 |
| 1101 |
≥99.8 |
≤0.10 |
≤0.10 |
≤0.01 |
Technical Implications:
- 3303: Optimized for metallurgical efficiency in steel and alloy systems
- 1101: Required for electronics, high-purity chemical, and photovoltaic applications where even trace impurities matter
Particle Form & Size Strategy
The physical form and particle size of silicon metal directly influence oxidation rate, melting consistency, and overall yield.
Flakes vs Granules
- Flakes: Larger surface area, faster reaction, ideal for rapid alloy adjustments
- Granules: Improved flowability, reduced dust, better feeding stability in continuous processes
Size Options
- 553 (Coarse): 10–100 mm, lower oxidation, higher recovery, suited for primary steelmaking and bulk alloying
- 441 (Medium): 10–50 mm, faster dissolution, more uniform distribution, preferred in casting and precision alloying
Strict screening and size control ensures predictable behavior and minimizes process deviations.
Material Properties Relevant to Industrial Use
- Metallic silver-gray crystalline appearance
- Hard, brittle structure for controlled melting and handling
- Melting point: ~1414 °C
- Density: ~2.33 g/cm³
- Stable thermal and electrical conductivity
These characteristics enable predictable reactions in furnaces, controlled alloying, and reliable electronic-grade material feedstock.
Application-Oriented Performance
Steelmaking & Alloy Production
Silicon metal serves as a primary deoxidizer and alloying regulator, influencing oxygen removal efficiency, slag-metal equilibrium, and final steel quality. Grades 3303 and 1101, with appropriate size selection, help reduce corrective alloy consumption, stabilize chemical composition across multiple heats, and improve overall furnace efficiency.
Casting & Foundry Applications
In cast iron and specialty casting, 441-size silicon metal provides uniform dissolution, reduces inclusion and defect formation, and enhances graphite structure and dimensional accuracy.
Electronics & Renewable Energy Materials
High-purity 1101-grade silicon metal is used in polysilicon production, photovoltaic material preparation, and battery applications. Low Fe, Al, and Ca levels reduce downstream contamination, improving yield and material performance.
Chemical Industry
Industrial silicon metal supports organosilicon intermediates, silicone oil and rubber production, and specialty chemical synthesis. Purity stability is critical to maintain reaction consistency and catalyst efficiency.
Manufacturing Control & Quality Assurance
ZhenAn silicon metal is produced via submerged arc furnace smelting, followed by controlled solidification, precision crushing and screening, and batch-level chemical verification.
QA Emphasis:
- Traceable raw materials
- Consistent chemical limits
- Particle size inspection
- Optional third-party verification
This ensures long-term supply reliability, essential for industrial credibility.
Packaging & Handling
- Bulk bags for steel and alloy plants
- Palletized bags for controlled dosing
- Moisture-resistant protection for long-distance shipping
- Designed for industrial-scale handling and transport
Technical FAQs
Which grade is suitable for high-purity electronic applications?
1101-grade silicon metal is preferred due to minimal Fe, Al, and Ca content.
How does particle size impact process efficiency?
Coarser sizes (553) reduce oxidation loss and improve silicon recovery, while medium sizes (441) improve melting consistency and reaction uniformity.
Can specifications be customized?
Yes. Both chemical composition and particle size distribution can be tailored to specific industrial process requirements.
Is this silicon metal suitable for both steelmaking and chemical applications?
Yes, provided the grade and particle size match the process requirements.
About ZhenAn
ZhenAn specializes in industrial silicon metal and ferroalloy materials, serving steelmakers, alloy producers, and advanced material manufacturers. The company prioritizes process compatibility, batch consistency, and technical reliability, helping clients mitigate operational risks rather than just sourcing raw materials.
