Features

The Unit Air Separator is suitable for the classification of a wide range of materials and is the most economic unit available in terms of kW hours/tonne of product.

In addition to its capabilities as a high performance classifier providing products in the range of 25 to 300 microns, it is particularly suitable for the removal of small quantities of oversize material or the de-dusting of granular materials to remove undesirable “fines”.

Whilst displaying the advantages of a self-contained stand-alone machine, the Unit Air Separator can be operated in closed-circuit with a variety of grinding mills.

• Operating range 25 - 300 microns.

• Machine capacity range from a few kgs/hour to 100 tonnes/hour.

• Low operating speed.

• Low power consumption.

• Requires no external fan or product collection system.

• Unit construction inhibits dust emission.

• Easy access for inspection and cleaning.

• Robust construction and build quality for long service life.

• Optional abrasion resistant linings available in steel, rubber, polyurethane or ceramics.

• Special models available with water jacket for temperature sensitive materials

Operating Principles

• Feed material enters through funnel (1) and descends through fixed feed tube (2).

• A circulating air flow is generated by integral fan (5).

• Entrained material is conveyed to classifier rotor (6).

• Particles are classified as a result of the interaction

• Between centripetal and air drag forces within the vortex generated by the rotor.

• Coarse material migrates to walls of inner cylinder (4) descending to coarse discharge chute (7).

• Fines pass through fan for collection in outer cylinder (8) by cyclonic action and descends to outlet (9).

• Cut point varied by rotor configuration and adjustment of circulating air flow