Jet Mill

Air jet Mill is shearing action grinding and collecting operations for achieving ultra-fine grinding upto 0.4 micron to 15 microns* depending upon the type (Physical & Chemical Property) of the product. Air jet mill (also known as micronizer) is made for grinding hygroscopic, heat sensitive and explosive materials to accomplish consistent steep particle size distribution. Air Jet Mill allows greater control within the grinding parameters and product particle size distribution

Model Available :

• Pneumatic bag shaking model.
• Reverse pulse jet model.
• For isolator application.
• For containment application.

Working Principle

Jet Milling is a notion of feeding powder particles right into a flat circular milling chamber and subjecting the exact same tangentially with pressurized air or nitrogen through a venturi. The Powder Particles are accelerated in a spiral movement in the milling chamber by several angular holes in a ring and placed around the periphery of the chamber.

The heat-sensitive and low melting point materials are typically micronized. Micronizer takes place as a result of collision between the incoming particles and the particles, which are already accelerated into the spiral path, The bigger Particles of the item get retained at the periphery of the chamber by centrifugal force and the smaller particles exit with the exhaust air from the central portion of the chamber.

The material can be milled to an average particles size of 0.2 to 5 micron or coarse ground to 400 mesh depending upon characteristics of the product.

The milling action of the particle is because of the high velocity of air/gases in place of pins, jaws or hammers and due to this heat does not get generated during milling. The adiabatic expansion of compressed air takes place with the resultant cooling effect. The heat-sensitive and low melting point materials are micronized without use of freeze grinding methods.