FIELD: metallurgy.
SUBSTANCE: before leaching ore is broken and ground to size of 60-70% not more, than 3.0 mm. Leaching of ore is carried out in vats at mixing within 60-120 min with solution of sulphuric acid of primary concentration 10-40 g/l and solid phase contents 50-70%. While leaching during the first 40 minutes concentration of sulphuric acid is maintained within limits of not less, than 10 g/l. After completion of leaching solid and liquid phases are separated and copper is extracted out of leaching liquid phase.
EFFECT: increased extraction of copper out of ore and leaching kinetics and reduction of sulphuric acid consumption and duration of leaching.
6 cl, 6 tbl, 5 ex
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