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

FIELD: metallurgy.

SUBSTANCE: method includes breaking and grinding of ore to size of not more, than 0.074 mm, and collective flotation of sulphide and oxidised copper minerals into collective flotation concentrate. After dehydration of concentrate there is performed leaching and mixing with participation of oxygen containing ecologically harmless oxidant at contents of solid phase of 10-50% in water solution of sulphuric acid of 10-80 g/dcm³ concentration at temperature 20-70°C and at presence of trivalent iron ions of 2.0-15.0 g/dcm³ concentration. Cake of leaching is dehydrated and washed, after what liquid phase of leaching is merged with cake washing water. Further merged solution is clarified and copper is extracted out of merged solution thus producing cathode copper.

EFFECT: increased extraction of copper and depth of ore processing; producing commercial output in form of cathode copper and increased ecological compatibility.

11 cl, 2 ex