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

FIELD: metallurgy.

SUBSTANCE: invention refers to copper metallurgy, particularly to methods of processing of sulphide oxidised copper ores as well as process products, tails and slag, containing oxidised and suplhide minerals of non-ferrous metals. The method includes dry crushing, crumbling of ore to the size of 60-95% class 0.074 mm, floatation concentration of crushed ore with extraction of the copper sulphide minerals concentrate at the first stage, while at the second stage copper oxidised minerals concentrate is extracted from the rest ore. Further leaching is carried out at mixing of copper concentrate of copper oxidised minerals with solution of sulpuric acid of concentration from 10.0 to 50 g/dcm³, and leaching at mixing of copper sulphide concentrate with using of ozone in water solution of sulphuric acid of concentration 10-80 g/dcm³ at the temperature of 20-70°C at presence of ions of trivalent iron of concentration 2.0-15.0 g/dcm³. Then dehydration and washing of leaching cakes is performed; leaching and washing solutions are merged, the merged solution is freed from suspended solids, and copper is extracted out of solutions with production of cathode copper.

EFFECT: increase extraction of copper, increased efficiency of ore processing and production of whole commercial output as cathode copper.

11 cl, 2 ex