PROCEDURE FOR EXTACTION OF METALS FROM GOLD CONTAINING SULPHIDE-OXIDISED COPPER ORES Russian patent published in 2011 - IPC C22B15/00 C22B11/00 C22B3/08 

FIELD: metallurgy.

SUBSTANCE: procedure consists in crushing and crumbling gold containing ore to size 60 % of class minus 0.063 mm, in gravitation concentration in centrifugal concentrators with successive refinement of crude gold containing concentrate on tables concentrators to production of gold containing concentrate. Collective copper concentrate is extracted from gravitation rejects by collective flotation of sulphide and oxidised minerals of copper. Collective copper concentrate is subjected to leaching at mixing with water solution of sulphuric acid at concentration not less 2 g/l with ozone at concentration in ozone-oxygen gas mixture over 85 g/l, hydrogen peroxide and ions of oxidised iron with concentration not less 2 g/l. Further, solid phase of concentrate leaching is dehydrated and washed, copper is extracted from copper containing solutions and copper and silver are extracted by flotation from solid phase of concentrate leaching.

EFFECT: increased extraction of metals from gold containing sulphide-oxidised copper ore.

6 cl, 2 dwg, 1 tbl, 1 ex