FIELD: metallurgy.
SUBSTANCE: invention relates to processing of industrial wastes of metallurgical and mining industries. Method involves leaching at presence of oxidant and trivalent iron ions. Before leaching polygradient air-mechanical separation of wastes is performed with dividing into fractions containing and not containing useful metals. It is followed by magnetic separation of fraction containing useful metals. Then, separated leaching of magnetic and nonmagnetic fractions is performed by mechanical activation with simultaneous hydrodynamic, electrochemical and chemical action. After leaching products are separated into solid and liquid parts with subsequent physicochemical treatment of the liquid part with hydrodynamic, electrophysical and electrochemical action, solid part is subjected to chemical-thermal treatment, followed by returning it to the non-magnetic fraction leaching stage.
EFFECT: reduced environmental load on the environment.
1 cl, 1 ex
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