a separation housing houses a rotor with multiple suspension chambers . each chamber has a radially extending web portion between two rotating discs . an orifice is provided through the radially extending web portion . another web portion urges gas radially out of the rotor . passages through the rotating disks permit entry of gas and solid particle mixtures into the suspension chambers at high speed traveling toward each other in a suspension adjacent to the orifice . the web portion that urges gas out of the chamber pulls gas away from the suspension zone . gas moving through the aperture and into a clean gas chamber pulls gas in the opposite direction . the result is gas in the suspension zone being fixed relative to the rotor or changing direction . centrifugal force moves solid particles radially out of the chamber .