Silicon Metal Powder
Silicon Metal Powder Manufacturer | 200/325 Mesh Metallurgical & Chemical Grade
In high-precision industrial processing, Silicon Metal Powder is not considered a basic raw material-it is an engineered functional powder. Its reaction kinetics, dissolution rate, and fluidization behavior are governed entirely by micrometer-scale particle morphology, surface chemistry distribution, and oxide layer thickness.
We are a direct-factory manufacturer applying inert gas–protected jet milling and multi-stage air classification systems to produce highly consistent Silicon Metal Powder. Our production system ensures narrow PSD bands, minimizes off-spec fines, and guarantees stable performance in automated pneumatic conveying systems and fluidized-bed reactors.
Purity Range: 98.5% to 99.9% metallic silicon
Particle Engineering: 40 mesh down to 5 μm ultra-fine grades (D50 controlled within ±10%)
Production Capacity: 2,500 MT monthly output via nitrogen-protected crushing systems
Compliance: ISO 9001:2015 | EU REACH registered | MSDS certified for international maritime transport
PROCESS PROBLEMS SOLVED IN AUTOMATED SYSTEMS
Uncontrolled particle size variation and excessive mechanical breakage during grinding lead to instability in downstream production processes. Our precision-milled silicon powder directly addresses the following five operational risks:
Prevention of Silo Bridging & Ratholing
Irregular particle shape and excessive fines significantly reduce powder flowability. Our air-classified powders maintain an optimized angle of repose (≤ 38°), ensuring stable mass flow in automated hopper systems.
Elimination of Fluidized-Bed Channeling
In organosilicon reactors, ultra-fine dust causes gas bypassing, while coarse particles remain inactive on the bed surface. Our controlled D10/D90 distribution ensures uniform fluidization velocity and improved reaction efficiency.
Reduction of Material Loss in Handling
Conventional crushed powders contain excessive sub-micron particles that are lost to dust collection systems, resulting in 3%–6% material loss. We remove these fines at the classification stage.
Prevention of Slag Inclusion in Metallurgical Processes
Uncontrolled Al and Ca impurities can form oxide inclusions during steel deoxidation or aluminum processing. Our strict grading system ensures cleaner melt behavior and reduced defect formation.
Stability During Storage and Transport
Moisture exposure accelerates surface oxidation and reduces active silicon content. Our vacuum-sealed and desiccant-protected packaging maintains chemical stability throughout logistics cycles.
TECHNICAL SPECIFICATIONS & PARTICLE SIZING
Standard Industrial Chemical Grades (ICP-OES Verified)
|
Grade |
Si Min % |
Fe Max % |
Al Max % |
Ca Max % |
Application |
|
553 Powder |
98.5% |
0.5% |
0.5% |
0.3% |
Coreless induction furnaces / foundry alloys |
|
441 Powder |
99.0% |
0.4% |
0.4% |
0.1% |
Master alloys / refractory systems |
|
3303 Powder |
99.3% |
0.3% |
0.3% |
0.03% |
Silicon nitride (Si₃N₄) & specialty metallurgy |
|
Chemical Grade |
99.5%–99.9% |
≤0.15% |
≤0.15% |
≤0.01% |
Organosilicon synthesis feedstock |
Precision Particle Size Distribution & Classification
|
Size Grade |
Micron Range (μm) |
D50 Target |
Retention Control |
Application |
|
40–120 Mesh |
125–425 μm |
260 μm ±15 μm |
Oversize ≤1.0% |
Ladle injection / metallurgy |
|
200 Mesh Standard |
≤75 μm |
38 μm ±4 μm |
Fines ≥95% |
Refractories / composites |
|
325 Mesh Fine |
≤45 μm |
22 μm ±2.5 μm |
<5 μm fines ≤5% |
Fluidized-bed chemical systems |
|
Ultra-Fine |
5–15 μm |
Custom |
Contract-based |
Advanced coating / materials |
KEY APPLICATION FIELDS
Silicone & Organosilicon Industry
Used as a primary reactive material for trichlorosilane and silicone production. Controlled surface area improves catalyst interaction efficiency.
Advanced Refractories & Ceramics
Used as antioxidant additive in MgO-C bricks. During sintering, it forms SiC or Si₃N₄ phases, improving high-temperature strength.
Aluminum Alloy & Master Alloy Production
Supports rapid dissolution in molten aluminum systems, ensuring stable composition control during continuous casting operations.
Advanced Energy & Functional Materials
Used as precursor material in silicon-carbon anode research and high-performance powder metallurgy systems.
PRODUCTION & QUALITY CONTROL SYSTEM
Our closed-loop production line:
Certified Silicon Ingot → Jaw Crushing → Nitrogen-Protected Jet Milling
Laser PSD Monitoring → Magnetic Separation (Dual Stage) → Anti-static Sealed Packaging
Key Control Technologies:
Nitrogen atmosphere milling reduces oxygen exposure below 1.5%, preventing oxidation and combustion risks.
15,000 Gauss magnetic separation removes trace Fe contamination from equipment wear.
Laser diffraction analysis ensures full D10 / D50 / D90 traceability per production batch.
PACKAGING, SAFETY & SHIPPING
Silicon metal powder is classified as a moisture-sensitive and potentially hazardous industrial material under international transport regulations (UN 1346 in specific fine-powder forms).
Standard Packaging:
1,000 kg / 1,250 kg UN-certified anti-static jumbo bags (Type B/C) with sealed PE liners
25 kg moisture-resistant composite bags on ISPM-15 treated pallets
Container Protection:
Full internal moisture barrier lining
Desiccant pole installation for humidity control
Anti-condensation reinforcement for long-distance sea freight
FAQ