Airfilt Technologies manufacture cyclone separator for separating dust with particle size greater than 5 um. These systems comprise of cylindrical and conical portion. As the dust leaden air enters the inlet port, it spirals downwards in an outer vortex and comes out of the unit in an inner vortex. Centrifugal action causes the air material to move around the inside walls of the cyclone, from where the material drops by force of gravity at the bottom leaving the air to escape through the top.