FIELD: metallurgy.
SUBSTANCE: method for extracting copper from sulphide-bearing ore involves ore crushing, leaching of copper with water sulphuric acid solution at pH equal to 1.5-2.0 and temperature of 25-30°C in presence of thionic bacteria with air aeration. At that, crushing is performed up to ore fractions size of 10-25 mm. Prior to leaching, sulphide-bearing ore is treated with silicate bacteria at temperature of 25-30°C and pH=6-7.
EFFECT: improving copper extraction degree at leaching.
3 ex
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