FIELD: metallurgy.
SUBSTANCE: method involves influence of acoustic field with supersonic frequency on sludges during 15-25 seconds. Then spraying with bacterial solution is performed with further cultivation of microorganisms in the solution and their accumulation. After that calalytic agents intensifying microorganism accumulation are added, and constant aeration of sludges with bacterial solution is performed at 20-35°C. After aeration valuable components are leached from sludges and removed from them.
EFFECT: intensifying acid leaching of valuable components from wastes.
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