A strainer with a screen at its outer periphery is rotatably supported on a casing. A hollow pipe with paddles on an outer periphery of the pipe is fitted in the strainer. The hollow pipe is rotated at a rotating velocity different from that of the strainer. Slurry introduced into the hollow pipe is...http://www.google.com/patents/US6261417?utm_source=gb-gplus-sharePatent US6261417 - Dehydrating concentrator
