FIELD: electricity, chemistry.
SUBSTANCE: method of recycling alkaline accumulator negative electrodes is based on hydrometallurgical separation of cadmium and iron oxides. Active mass removed from the used alkaline accumulator negative electrodes is supplied for hydrometallurgical recycling including following processes: leaching metals with sulfuric acid, converting dissolved metals into hydroxides by sodium alkali solution, converting ferrous iron into ferric iron by atmospheric oxygen, converting iron hydroxides into oxides by changing the process temperature mode, converting cadmium hydroxide into basic salt, sulfuric acid leaching, separation from iron by filtering.
EFFECT: returning active mass components of alkaline accumulator negative electrodes into production cycle, utilisation of cadmium-containing materials which are hazardous for human health.
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