Ultra Fine Silicon Metal Powder

Engineered for High-Yield Metallurgy, Chemical Synthesis & Advanced Refractories

The industrial value of silicon powder is defined not by nominal purity alone, but by its reproducible behavior inside your reactors and furnaces.Conventional crushing often leads to unpredictable particle morphology and inconsistent surface kinetics.

Our Ultra Fine Silicon Metal Powder is produced from premium, selected silicon ingots using inert-gas milling and multi-stage air classification, ensuring batch-to-batch consistency in both chemical purity and Particle Size Distribution (PSD).

We do not rely on nominal mesh definitions. Instead, we regulate and certify powders using laser diffraction (Malvern systems), ensuring compliance within specific $D_{10}$, $D_{50}$, and $D_{90}$ envelopes.

10–40 Mesh: Coarse reactive grade for reduction systems requiring slower reaction kinetics.

40–80 / 80–200 Mesh: Engineered for standard metallurgical alloying and stable furnace charging.

200–325 Mesh ($D_{50} \approx 45,\mu\text{m}$): High-surface-area grade for fluidized bed chemical processing.

Custom Micron / Sub-micron Profiles: Tailored distributions adjusted via closed-loop air classification.

Organosilicon & Silane Production
In the direct synthesis of methylchlorosilanes, impurity control directly affects catalyst life and operational stability.
• Catalyst Stability: Trace impurities such as Lead (Pb), Calcium (Ca), and Aluminum (Al) can poison fluidized bed catalysts. By strictly controlling these elements, our chemical-grade powder helps reduce catalyst deactivation, minimizes fluidization instability, and supports longer continuous operation cycles.
• Dust Control: We limit the ultra-fine sub-10 μm fraction to reduce localized reaction hotspots and exothermic instability, helping maintain more stable yield behavior.

Aluminum Alloy Formulation
• Elimination of Hard Spots: A tightly controlled PSD ensures uniform dissolution behavior during melting, reducing silicon segregation and improving microstructure consistency in the final alloy.
• Stable Recovery Efficiency: Reduced burning loss and slag formation during furnace charging helps maintain silicon recovery rates above 95%, with lower batch-to-batch composition deviation.

Refractories & Advanced Material Systems
• In-situ Phase Formation: In carbon-bonded and monolithic refractory systems, fine reactive silicon promotes conversion into β-SiC (Silicon Carbide) and Si₃N₄ (Silicon Nitride) at high temperatures.
• Performance Improvement: This contributes to higher Hot Modulus of Rupture (HMOR) and improved thermal shock resistance by stabilizing firing shrinkage behavior.

[Selected Silicon Ingots] → [Contamination-Controlled Crushing] → [Inert-Gas Jet Milling] → [Multi-Stage Air Classification] → [In-Line Quality Sampling]

To ensure global trade compliance and supply chain reliability, our silicon powders follow a fully audited production and documentation system:

Global Compliance
Fully compliant with EU REACH regulations, RoHS directives, and supplied with GHS-aligned Safety Data Sheets (SDS).

Analytical Verification
Each batch is tested via Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) and can be independently verified by accredited third-party labs (SGS / Intertek) upon request.

Seaworthy Packaging
25kg multi-layer moisture-barrier valve bags.
1 MT UV-stabilized jumbo bags with PE liners.
Optional vacuum sealing or nitrogen flushing for high-purity grades.

To prevent oxidation and moisture absorption during transport, the material is packaged in:
• 25 kg moisture-proof laminated bags
• 1-ton jumbo bags for bulk shipment
• Optional sealed drum packaging for high-purity grades
All packaging is designed for long-distance ocean freight and warehouse storage stability.

We do not position silicon powder as a standard commodity. Each inquiry is treated as a process-specific material requirement.

Buyers can request:
• TecTectechnical Specification Sheet
• COA sample from recent batch
• Lab Test Sample For Process Evaluation

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