Jet Mills by DP Pulverizer – Ultra-Fine Precision Milling

Jet mills utilize a high-velocity gas stream—typically air, nitrogen, or steam—to accelerate particles within a grinding chamber. Here’s how the process works:

1. Feed Material Introduction
   Material is fed into the mill through a venturi injector or a feed port.
2. Acceleration & Collision
   Compressed gas propels particles at sonic or supersonic speeds inside a circular grinding chamber. Particles collide with each other, causing size reduction through inter-particle collision, not mechanical impact.
3. Fine Particle Classification
   A classifier wheel or integrated classifier separates fine particles from coarse ones. Coarse material is recirculated until it meets the desired size.
4. Discharge
   Fine particles are discharged through a cyclone or filter system, ready for collection and downstream processing.

• ✅ Grinding Chamber
  The circular chamber where high-speed collisions occur.
• ✅ Gas Nozzles
  Inject the gas stream at high pressure and velocity to drive particle collisions.
• ✅ Classifier or Separator Wheel
  Ensures only particles of the desired size are collected; recirculates the rest.
• ✅ Venturi Injector or Feeder
  Controls the introduction of raw material into the grinding chamber.
• ✅ Cyclone Collector & Dust Filter
  Collects the final product while maintaining a clean, sealed operation.

• ✅ No Moving Parts in the Grinding Chamber – Minimizes contamination and wear.
• ✅ Ultra-Fine Particle Sizes – Down to submicron range.
• ✅ Cool Grinding – Ideal for heat-sensitive materials.
• ✅ No Metal Contamination – Especially when using ceramic construction.
• ✅ Narrow Particle Size Distribution – Ensures consistent, high-quality output.
• ✅ Inert Gas Capability – Safe for explosive or reactive materials (e.g., nitrogen or argon).
• ✅ Scalable – From lab to production scale.

• ⚠️ Higher Energy Consumption – Compared to mechanical mills.
• ⚠️ Limited to Low-Medium Density Powders – May not be suitable for very hard or sticky materials.
• ⚠️ Initial Investment Cost – Jet mills are typically more expensive than traditional grinding equipment.
• ⚠️ Dry-Only Processing – Not suitable for wet milling or slurries.