FIELD: metallurgy.
SUBSTANCE: invention relates to the metallurgy of non-ferrous metals and can be used in the extraction of precious metals from mother liquors of refining production. Noble metals are extracted from solutions by carburizing by passing an electric current of industrial frequency through the solution and the cementing metal, made in the form of electrodes. Compact aluminum is used as the cementing metal. During cementation, the pH of the solution is maintained in the range of 0.5-2.0. The deposition is carried out at a current density on the geometric area of the electrodes of 50-500 A/m2.
EFFECT: method allows to reduce the duration of precipitation of noble metals and ensures the achievement of waste concentrations for all noble metals.
1 cl, 1 dwg
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