METHOD OF PROCESSING OF SULPHIDE-OXIDISED COPPER ORES Russian patent published in 2008 - IPC C22B15/00 C22B3/08 

FIELD: metallurgy.

SUBSTANCE: method includes dry breaking and grinding of ore to size of not more, than 1.0-4.0 mm, ore leaching and mixing, when contents of solid phase is 50-70% with solution of sulphuric acid of 10.0 to 40 g/dcm³ within 0.5-2.0 hrs. After leaching generated cake is dehydrated, washed, subject to neutralisation and crushed to size of 60-95% class - 0.074 mm. Flotation of copper minerals with production of flotation concentrate is carried out. Solution after leaching of ore and cake wash water are merged and freed from solid suspension; then cathode copper is extracted out of them.

EFFECT: reduced consumption of sulphuric acid and water for process; increased extraction of copper out of ore and upgraded quality of consumer products.

8 cl, 2 ex