Safe, High-Purity Metal Powder Production with Explosion-Proof Design & Precise Particle Control Specialized ball mill technology for aluminum powder, iron powder, copper powder, nickel powder, titanium powder, stainless steel powder, and other metal powder processing. From ultra-fine flake aluminum paste to spherical metal powders for additive manufacturing, our systems deliver oxygen-free protection, narrow particle size distribution, and energy-efficient operation — trusted by metal powder manufacturers worldwide.
Our aluminum powder ball mill is a high-efficiency horizontal grinding system designed for producing consistent metal powders under controlled atmosphere. Available in dry or wet configurations with nitrogen protection, it serves pyrotechnics, powder metallurgy, additive manufacturing, coatings, and chemical industries.
Materials & Process Flexibility
Our metal powder ball mill handles a broad spectrum of feed materials and process conditions:
Core Materials:
· Aluminum powder (flake, atomized, granular) — pyrotechnics, aluminum paste, 3D printing, solid propellants, refractory
· Iron powder (reduced, atomized, carbonyl) — powder metallurgy, magnetic materials, welding electrodes, chemical reduction
· Copper powder (electrolytic, atomized) — PM parts, conductive inks, brake pads, diamond tools, antifouling
· Nickel powder (carbonyl, electrolytic) — battery electrodes, catalysts, superalloys, conductive adhesives
· Titanium powder (HDH, atomized) — aerospace AM, biomedical implants, MIM feedstock
· Stainless steel powder (316L, 17-4PH, 304) — metal injection molding, 3D printing, sintered filters
· Zinc powder (atomized, flake) — anti-corrosion coatings, batteries, chemical reagents
· Tin powder (atomized) — soldering, brazing, conductive pastes
· Magnesium powder — pyrotechnics, desulfurization, Grignard reagents
· Silicon powder — semiconductor, solar, silanes
· Manganese powder — steelmaking, welding, batteries
· Tungsten powder, molybdenum powder, cobalt powder — cemented carbide, diamond tools, battery precursors
· Pre-alloyed powders, master alloys, and other specialty metal powders
From Metal Feedstock to High-Performance Powder: Engineered Precision in Every Step
Inert Atmosphere Feeding – Metal powder precursor or coarse metal granules are fed into the mill via a sealed rotary valve or double-flap valve under nitrogen purging. Oxygen and moisture are excluded from the very first step.
Primary Grinding Zone – Chamber 1 uses larger grinding media and wear-resistant liners (ceramic for non-ferrous purity, steel for ferrous) to reduce feed material to intermediate size. For ductile metals, the chamber geometry is optimized for flattening (flake) or size reduction (granular).
Controlled Material Transfer – A gas-tight intermediate diaphragm retains grinding media while precisely transferring pre-ground powder to Chamber 2 under continuous inert gas flow. Online O₂ sensors monitor atmosphere integrity.
Fine Grinding & Shaping Zone – Chamber 2 employs smaller grinding media and classifying liners to achieve target particle size and morphology with minimal over-grinding and heat generation. For flake aluminum, special lubricants or stearic acid can be dosed for controlled cold welding and flake formation.
Inert Classification & Collection – Discharge is conveyed via a bucket elevator or pneumatic system to a dynamic separator or air classifier under nitrogen. On-spec metal powder is collected in a baghouse or cyclone with explosion isolation valves. Coarse particles return to the mill. The entire system is sealed and inerted — no oxygen, no explosion risk, no oxidation.
| Model | Dia.×Length (m) | Capacity (t/h) | Motor Power (kW) | Shell Speed (r/min) |
|---|---|---|---|---|
| Φ1.2×4.5m | 1.2×4.5 | 0.5–1.5 | 55 | 31.7 |
| Φ1.5×5.7m | 1.5×5.7 | 1.5–3 | 90 | 29.7 |
| Φ1.8×7m | 1.8×7 | 3–6 | 185 | 25.4 |
| Φ2.2×7m | 2.2×7 | 6–10 | 245 | 24.5 |
| Φ2.4×8m | 2.4×8 | 10–15 | 315 | 22.4 |
Larger custom sizes available. Capacity depends on metal type, target fineness, and process (dry/wet, flake/granular).
| Parameter | Value |
|---|---|
| Max. feed size | ≤5 mm (granular/powder feed) |
| Product fineness | 80 – 1250 Mesh (0.075 – 0.010 mm) |
| D50 target range | 5 – 75 µm (adjustable via classifier) |
| Atmosphere protection | Nitrogen / Argon (O₂ <2-4%, dew point <-40°C) |
| Grinding method | Dry (inert) / Wet (solvent) / Cryogenic |
| Circuit type | Open‑circuit / Closed‑circuit (with air classifier) |
| Number of chambers | 1, 2, or 3 |
| Liner material (non-ferrous) | High alumina ceramic / Zirconia / Polyurethane |
| Liner material (ferrous/standard) | High manganese steel / High chromium cast iron / Ni-hard |
| Grinding media (non-ferrous) | Alumina balls / Zirconia beads / Flint pebbles |
| Grinding media (ferrous/standard) | Forged steel balls / High chromium cast balls / Stainless steel balls |
| Safety features | Explosion vent panels, O₂ monitoring, pressure sensors, isolation valves, inert gas purge system |
| Certifications | ATEX, NFPA, IECEx available |
Complete Range for Every Metal Powder Application
Our product line covers everything from small-scale specialty powder R&D to large-capacity metal powder production plants. Whether you need a nitrogen-protected ceramic-lined system for ultra-pure copper powder, an explosion-proof aluminum flake milling line for automotive coatings, or a cryogenic grinding system for ductile titanium powder, our ball mills deliver reliable and safe performance. As an experienced ball mill manufacturer, we support your project from safety design (HAZOP), custom media and liner selection, to installation, commissioning, and operator training.
For Engineers & Procurement:
For reactive metal powders (Al, Mg, Ti), a fully inerted closed-circuit system with online O₂ monitoring and ATEX-certified explosion protection is mandatory. For high-purity non-ferrous powders requiring <50 ppm iron contamination, specify ceramic-lined mills with alumina or zirconia grinding media. For flake metal powder production, wet grinding with process-controlled stearic acid/lubricant dosing is the standard configuration. We will help you define the optimal and safest configuration based on your material's SDS and target product specification.
Don't see your target spec? Tell us your metal type, feed form, required capacity, target particle size (D10, D50, D90), and purity requirements. We will engineer the exact model and safety system for your metal powder processing plant.
Proven Performance: Global Field Results
Case 1: 5,000 TPY Aluminum Flake Powder Production Line, East Asia
· Model: Φ1.8×7m Wet Grinding Ball Mill with Nitrogen Protection
· Feed: Atomized aluminum powder (-200 mesh)
· Product: Leafing aluminum flake for automotive coatings, D50: 12-15 µm, aspect ratio >100:1
· Result: Achieved 500 kg/h output with consistent flake quality. Closed-loop nitrogen system kept O₂ <2%, zero safety incidents over 5 years of continuous operation.
Case 2: Stainless Steel 316L Powder Grinding for Metal Injection Molding, Europe
· Model: Φ1.5×5.7m Closed-Circuit Ball Mill with Air Classifier
· Feed: Gas-atomized 316L powder (0-150 µm)
· Product: MIM-grade powder, D90 <45 µm, spherical morphology preserved
· Result: Output 300 kg/h, iron contamination <30 ppm with ceramic-lined chamber. Replaced imported classifier mill, reducing CAPEX by 50%.
Case 3: Copper Powder De-agglomeration & Classification Plant, South Asia
· Model: Φ1.2×4.5m Ceramic-Lined Ball Mill with Dynamic Separator
· Feed: Electrolytic copper powder (agglomerated, 0-100 µm)
· Product: Dendritic copper powder, D50: 25 µm, >99.5% purity
· Result: De-agglomeration efficiency 98%, no detectable iron increase. The system eliminated a previous quality bottleneck in their PM parts production.
Quality & Safety Woven into Every System: Beyond ISO 9001
· Pre-Delivery Safety & Performance Test: Every metal powder ball mill undergoes a factory no-load test, safety system functional test (O₂ monitoring, isolation valves, purge sequence), and pressure leak test before shipment. For critical applications, we can perform a trial grind with your material under inert atmosphere and provide a process guarantee report.
· Material & Component Certification: Full certifications for mill body, liners, grinding media, bearings, and safety components. 3.1 and 3.2 mill certificates available upon request. ATEX/IECEx certificates for electrical components.
· Oxygen-Free Guarantee: For inerted systems, we guarantee the O₂ level in the grinding circuit stays below the specified limit (typically <2-4%) during normal operation. Inline O₂ analyzers with alarm and automatic shutdown are standard.
· HAZOP & Safety Documentation: We provide HAZOP study reports, explosion protection documents (as per EN 14491/NFPA 68), and operator training manuals for your local safety permit applications.
· Process Performance Guarantee: We commit to the guaranteed throughput, product fineness (D50/D90), and specific energy consumption as agreed in the technical contract.
Ready to Start Your Metal Powder Grinding Project?
Send an inquiry. You will receive:
A detailed quotation matching your metal type, capacity, fineness target, and safety level.
A complete equipment list, 3D plant layout drawing, and recommended grinding media specification.
Safety system design documentation (explosion protection concept, inert gas flow diagram).
Your project details, material SDS, and samples are treated with full confidentiality.
Kolev Equipment Technology Co., Ltd. is a large-scale private technology enterprise specializing in the research, development, production, and sales of mining and metal ore processing equipment. With over 20 years of experience in ultra-fine grinding, industrial drying, and crushing sand making industries, we provide intelligent solutions and mature supporting products worldwide.
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