METHOD FOR HEAP BACTERIAL LEACHING OF SULPHIDE-BEARING ORE

摘要

FIELD: metallurgy.;SUBSTANCE: invention concerns hydrometallurgical manufacturing and can be used at bioleaching of sulphide products, containing various nonferrous and precious metals. Method of sulphide-bearing ore treatment includes ore leaching stacked on the watertight basis, located at slope, in heap has a form of rustum of pyramid. Leaching is implemented by means of sulfuric acid solution at concentration 2-10 g/l, containing ions of ferric iron by concentration 1-20 g/l, iron-oxidizing bacteria with microelements and sulphur-oxidizing bacteria. After collection of flowing out solution it is implemented iron regeneration in collected solution in separate instrument by immobilized on neutral bearer bacteria with aeration by air. Metals extraction is implemented from leaching solution.;EFFECT: increasing of metals extraction ratio, decreasing of treatment time.;4 cl, 2 ex