FIELD: metallurgy.
SUBSTANCE: method of vat bacterial leaching consists in leaching of crumbled, sulphide containing product in water solution of sulphuric acid at value of pH 1.5-2.0 and temperature 10-40°C. Leaching is carried out at presence of ions of trivalent iron of concentration 5-20 g/l, iron oxidizing bacteria of concentration 105 kl/ml and microelements aerated with gas mixture of air and ozone. Contents of ozone in gas mixture are at amount of up to 0.01 vol %. Leaching solution is divided into solid and liquid phase.
EFFECT: upgraded degree of metal extraction out of sulphide containing product and accelerated rate of leaching.
3 cl, 2 ex
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