Patent ID: 6527960
Filing Date: 2003-03-04
Classification: B01D,B03B,B09C,C02F,Y10S

Abstract:
In a process for separating oily films from sand particles carried in a solvent free water medium, the use of a jet pump scrubber in a density classification tank to treat such oily coated particles at controlled operating temperatures for said medium at about above 65Â° C., said jet pump scrubber comprises a jet nozzle, scrubber chamber and a target, said water at said operating temperature carrying incoming sand particles to be treated being forced through said jet nozzle at high velocity toward an entrance to said scrubber chamber, said high velocity jet drawing surrounding tank contained medium of water and treated sand particles at said operating temperature into said scrubber chamber, said water at operating temperature expediting formation of water vapor bubbles at sand particle surfaces which implode rapidly during enhanced water cavitation occurring in said scrubber chamber, said rapid bubble implosion removing oily film from said particles, said tank providing for recirculation of sand particles through said jet pump before discharge.