Patent ID: 6533946
Filing Date: 2003-03-18
Classification: B01D,E21B

Abstract:
An apparatus for cleaning slurry contaminated with particulates, comprising:an inlet for contaminated slurry; first screening means for receiving said slurry from said inlet and carrying out a coarse filtering of said slurry to remove coarse particulates and permit passage of a liquid fraction; a tank for receiving said liquid fraction from said first screening means, said tank including mixing means for maintaining the contents of said tank in suspension; an outlet from said tank communicating with a cyclonic separator for separating said liquid fraction into first and second streams, said first stream having relatively greater solids portion and said second stream having a relatively reduced solids portion; a second screening means for receiving said first steam from said cyclonic separator and removing fine particulates therefrom, for re-entry into said tank; an exit conduit from said cyclonic separator for said second stream, for directing a portion of said second stream back into said tank for recycle, and a further portion of said second stream for exiting said apparatus as a substantially purified liquid; and pumping means for circulating said liquid through said apparatus.