DEVICE FOR TRAPPING OF PLACER HEAVY METALS Russian patent published in 1997 - IPC

FIELD: mineral concentration; applicable on scrubber-sluicing devices and building units used in mining industry. SUBSTANCE: device includes scrubber, sluice installed after scrubber in direction of pulp motion and having successively installed scrubber in direction of pulp motion and having successively installed movable and immovable riffles. Made in sluice bottom, under end part of movable riffles is lateral slot with concentrator under it. Movable riffles are made in form of transverse trapezoidal strips interconnected by longitudinal strips secured to sluice walls by flexible members. Concentrator is made in form of rectangular chamber with side walls and double bottom plate. Upper bottom plate is made of flexible material, and lower bottom plate has pipe union for supply of pulsing water jet. EFFECT: higher efficiency. 3 cl, 3 dwg