METHOD OF FLOTATION CONCENTRATION OF CAKE OF SULPHURIC ACID LEACHING OF COPPER ORE Russian patent published in 2009 - IPC B03D1/00 B03B7/00 

FIELD: mining.

SUBSTANCE: method consists in grinding cake of leaching to size of 60-90% grade minus 0.074 mm with simultaneous neutralisation by adding water suspension of lime into mill, in performing 2-3 operations of basic flotation at values of medium pH 8.0-9.5 of duration 5-10 minutes; in 1-2 control operations of flotation at value of medium pH 10.5-11.0 of duration 5-10 minutes and in 2-3 cleaner flotation operations, in performing cycle of end product flotation of control flotation concentrate and tailings of the first cleaner flotation with regrinding to size 90-100% minus 0.074 mm. Concentrate of basic end product flotation is directed into a head of the basic cycle. Concentrate of control end product flotation is directed into the head of basic end product flotation. Tailings of control end product flotation are directed into the control operation of the basic cycle.

EFFECT: upgraded efficiency of flotation.

3 cl, 1 dwg, 2 ex, 2 tbl