GOLD EXTRACTION PROCESS AND GOLD-BEARING STOCK DRESSER Russian patent published in 2013 - IPC B03B9/00 

FIELD: process engineering.

SUBSTANCE: invention relates to mining, particularly, to concentration of minerals, namely to gold extraction from gravel man-caused deposits of various origin. Method of extracting gold from gold-bearing stock pulp cleaned of larger particles, approx. 1.5 mm and smaller particles, approx. 0.04 mm, whereat said pulp is, first, sized to different fractions to be separately concentrated by vibratory concentrators and dressed at dressing tables. Then, obtained super concentrates are subjected to magnetic and electrostatic separation. Proposed dressing device comprises, at least, two hydraulic classifiers, two vibratory concentrators, two concentration tables and settler. Said hydraulic classifiers allow pulp separation into fractions and their feed to different vibratory concentrators which, in their turn, feed separately obtained concentrates to different dressing tables. Pulp formation device, vibratory concentrators and dressing tables are communicated with settler communicated, in its turn, with fresh water inlet of above said concentrators and tables.

EFFECT: higher yield.

5 cl, 5 dwg