Features

• Operating range of 5 to 150 microns.

• Available in a range of sizes with capacities from a few kgs/hour to many tonnes/hour.

• Excellent sharpness of cut.

• Precise on-stream control of cut point by variation of rotor speed.

• Low system resistance.

• Low power consumption.

• Adjustable secondary air system for optimisation of classification efficiency.

• Design configuration ensures feed material immediately enters the classifying vortex unimpeded by re-circulating coarse fraction giving superior performance.

• Optional linings.

• Ceramic rotors may be fitted where necessary.

• Operates under suction promoting dust-free environment.

• Robust construction and build quality for long service life.

• Mild steel or stainless steel construction available.

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

Operating Principles

• Entrained feed material enters through primary air duct (1).

• Particles are introduced into a forced vortex generated within the machine by a rotor (2).

• Particles are classified within the vortex as a result of the interaction between centripetal and air drag forces.

• Cut point determined by control of rotor speed (and air flow).

• Particles below cut size pass through the rotor and exit with the entraining air duct (4) for collection in the external system.

• Coarse particles above the cut point migrate to the casing wall and descend through the discharge cone (3) to outlet.

• Secondary rinsing air enters through duct (5) dispersing agglomerated fines giving improved product yield.

• Secondary air flow rate controls the residence time within the separating zone and can be adjusted to give optimum classification conditions for widely differing materials.