Supersonic Airflow Milling Machine
A supersonic air jet pulverizer utilizes compressed air at 0.7–1.0 MPa, passed through a Laval nozzle to generate a supersonic airflow that accelerates the material, causing particles to collide with one another and shatter (particle-on-particle impact). There is virtually no direct impact of the grinding head against the material. A classification wheel sorts the particles, and coarse powder is recirculated for further grinding.
Ultrasonic Air Jet Mill Working Principle
Purified compressed air enters the grinding chamber through nozzles, forming a supersonic airflow. Upon fluidization, the material undergoes mutual impact, collision, friction, and shearing at the convergence point of the nozzles, achieving autogenous grinding. The powder rises with the airflow to the turbine classification zone. Fine powder meeting specifications is collected via the classification wheel, while coarse particles fall back for further grinding, thereby preventing over-grinding. Exhaust gas is dedusted before meeting emission standards. For flammable, explosive, or easily oxidizable materials, the system can switch to an inert gas medium for closed-loop grinding.
Ultrasonic Air Jet Mill Advantages
Narrow particle size distribution with adjustable particle size. Minimizes over-grinding and coarse particle residue.
No heat generation from mechanical friction; suitable for heat-sensitive, low-melting-point, and volatile materials.
No contact with grinding media; suitable for high-hardness, high-purity, and high-value-added materials.
Supports inert gas closed-loop circulation; handles flammable, explosive, and easily oxidizable materials.
Integrated grinding and classification with automatic PLC control. Ensures stable operation and reduces auxiliary equipment and labor costs.
A fully enclosed negative-pressure system prevents dust leakage and meets environmental standards.
Applications of Ultrasonic Air Jet Mill
Airflow jet mill pulverizer machines are suitable for dry ultrafine grinding, de-agglomeration, and particle shaping. Typical materials include:
- High-hardness minerals/ceramics/refractories: Silicon carbide, zircon sand, corundum, alumina, tungsten carbide, etc.
- High-purity functional powders: Phosphors, silica gel, silicon dioxide, catalysts, activated carbon, aluminum hydroxide, carbon black, etc.
- Heat-sensitive materials/polymers: Toner, resins, ion exchangers, plant protection agents, natural rubber, PE, PP, PVC, polyurethane, etc.
- Battery and new energy materials: Lithium cobalt oxide, lithium manganese oxide, lithium iron phosphate, lithium manganese iron phosphate, lithium-rich manganese-based materials, NCM (nickel-cobalt-manganese) / ternary materials, sodium-ion battery materials (polyanion/layered oxide/Prussian blue), lithium carbonate, lithium hydroxide, solid-state electrolytes, lithium sulfide, iron phosphate, etc.
- Magnetic materials: NdFeB (neodymium-iron-boron), SmCo (samarium-cobalt), rare earth materials, etc.
Features
Air jet mills are characterized by fine product particle size, narrow particle size distribution, smooth particle surfaces, regular particle shapes, high purity, and high reactivity.
Golden Service
For your grinding mill equipment, we stand by your side 24 hours a day, providing round-the-clock protection for your choices!
Sandreck possesses extensive manufacturing facilities and a highly skilled R&D team, enabling us to provide you with ultra-fine vertical grinding mills that deliver stable performance, exceptional durability, and robust reliability. This ensures your production requirements are met.
You can first trial-grind your material for free before you purchase the grinding mills. We create a solution exclusively geared to your requirements, linking them to the appropriate equipment and maximizing productivity.
More Information about Ultrasonic Air Jet Mill
- Technical Parameters
| Model | Air consumption | Air pressure | Feed particle size | Discharge particle size | Production capacity | Power |
| Unit | (m³/min) | (MPa) | (mm) | (μm) | (kg/h) | (kW) |
| QLM-50 | ≥3 | 0.8 | ≤3 | 3-45 | 1-3 | ≤20 |
| QLM-100 | ≥6 | 0.8 | ≤3 | 3-45 | 1-5 | ≤35 |
| QLM-200 | ≥10 | 0.8 | ≤3 | 3-45 | 15-30 | ≤75 |
| QLM-300 | ≥16 | 0.8 | ≤3 | 3-45 | 30-80 | ≤120 |
| QLM-400 | ≥22 | 0.8 | ≤3 | 3-45 | 80-200 | ≤168 |
| QLM-600 | ≥40 | 0.8 | ≤3 | 3-45 | 200-500 | ≤320 |
| QLM-800 | ≥60 | 0.8 | ≤3 | 3-45 | 500-1000 | ≤600 |
| QLM-1000 | ≥90 | 0.8 | ≤3 | 3-45 | 1000-1500 | ≤850 |