Air Jet Mill

Air Jet Mill

Varahi Industries’ Air Jet Mill is an advanced micronizing system that reduces particle sizes to the sub-micron range with no moving parts inside the grinding chamber. Using high-velocity jet streams, it achieves ultra-fine sizes with high purity and minimal contamination—ideal for pharmaceuticals, pigments, minerals, agrochemicals, and heat-sensitive materials.

Its robust, modular design ensures precision, efficiency, and clean operation for industries demanding high-quality micronized products.

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Working Principle

  • Jet Injection

    Compressed air/steam enters through precision nozzles into a cylindrical chamber.

  • Vortex & Feeding

    High-velocity jets create a vortex; a Venturi system draws and meters the feed.

  • Particle–Particle Impact

    Particles collide at sonic speeds, reducing size via attrition and impact.

  • Internal Classification

    Fine particles exit centrally; coarse particles recirculate until target size is met.

  • Collection

    Final product is collected in a cyclone or pulse-jet dust collector—ensuring high purity.

Key advantage: No mechanical moving parts in the grinding zone—reduced wear and contamination.

Technical Specifications

Model Capacity (Kg/Hr) Air Compressor (HP) Air FAD (CFM) Space Required (L × W × H, m)
VMF-2 1 – 2 10 – 15 25 0.6 × 0.6 × 1
VMF-4 3 20 45 1 × 1 × 1.5
VMF-6 10 30 75 2 × 1 × 1.5
VMF-8 22 40 125 3 × 1 × 2
VMF-10 40 50 200 4.5 × 2 × 4
VMF-12 65 60 265 4.5 × 2 × 4
VMF-15 100 75 380 5 × 2 × 4
VMF-18 160 120 530 5 × 2 × 5
VMF-20 210 150 650 5 × 2 × 5
VMF-24 400 250 1050 5 × 3.5 × 6
VMF-30 720 450 1725 6 × 3 × 7.5
  • Operating Pressure: 7–8 Kg/cm²
  • Input Material Size: typically 200 mesh
  • Micronization Output: down to 2 microns

Performance varies with material properties, air pressure, and feed rate.

Key Features & Benefits

  • Ultra-fine micron-level grinding (up to 2 microns)
  • No moving parts in the grinding chamber—minimal wear
  • Ideal for heat-sensitive and abrasive materials
  • Compact, space-saving, modular design
  • Easy cleaning & fast batch changeover
  • Top or bottom discharge options
  • Low contamination, high-purity output; GMP available

Customization & Options

Component Options
Design Type General Purpose / Pharma (GMP)
Construction MS / SS 304 / SS 316 / Polymer
Liners Tungsten Carbide, Ceramic, PTFE, PU, or custom
Discharge Type Top or Bottom
Feeding System Venturi-based precise feed control
Dust Collection Cyclone, Dust Collector, Pulse Jet, or combinations
Material Collection Manual or automatic bagging system

System Configuration

  • Jet Mill (Grinding Unit)
  • Air Compressor (as per model)
  • Venturi-based Feeding System with Rotary Valve
  • Cyclone Separator
  • Pulse Jet Dust Collector
  • Control Panel
  • Support Structure / Frame

Applications

Pharmaceuticals

APIs, bulk drugs, excipients

Pigments & Dyes

Organic & inorganic colorants

Minerals

Silica, talc, graphite, CaCO3, BaSO4

Agrochemicals

Insecticides, pesticides, fertilizers

Polymers

PVC, ABS, PE, PP

Food Ingredients

Starches, enzymes, additives

Advanced Materials

Battery, ceramics, aerospace composites

Maintenance & After-Sales Support