METHOD OF GOLD AND PALLADIUM, PLATINUM AND RHENIUM EXTRACTION FROM PULP LIXIVIATION TAILINGS WITH THEIR BACKGROUND CONTENT Russian patent published in 2016 - IPC C22B11/00 C22B7/00 B03C1/08 B03B5/62 

FIELD: mining.

SUBSTANCE: invention relates to mining industry. Method of gold and palladium, platinum and rhenium extraction from pulp lixiviation tailings with their background content includes gravity dressing of screened pulp tailings by means of screen with holes diameter on chute bottom front compartment of 1 mm with catching bed from magnetic wires, reinforcing rubber mats with metal masks and magnetic field source in form of permanent magnets, laid at chute bottom by opposite poles without clearance. At that, heavy magnetic minerals are parallel sifted on screen, supplied at chute bottom to form wires from magnetic minerals and concentrating gold and palladium, platinum and rhenium particles in wires pores, then, removal of gravity gold is performed and wires of magnetic minerals with gold and palladium, platinum and rhenium particles are supplied to magnetic drum with electric motor and magnetic fraction is output to tailing pond by means of scraper. Remaining sand fraction containing gold, palladium, platinum and rhenium, is supplied into fine filling sluice with chutes and gold and palladium, platinum and rhenium particles with size of less than 0.25 mm are trapped.

EFFECT: higher efficiency of gold and palladium, platinum and rhenium extraction.

1 cl, 1 dwg