FIELD: metallurgy of noble metals. SUBSTANCE: after stage of mechanical crushing and prior to machining with chemical reagents prepared sample of material is subjected to action of pulse corona discharge. For this sample of material is placed into chamber with high-voltage corona electrode to which electric pulses with frequency 10 Hz-10 kHz, amplitude 60-300 kV and duration 50-250 ns are fed periodically. Constant voltage 20-100 kV is supplied in intervals between pulses. EFFECT: enhanced efficiency and productivity of process of recovery of noble metals, reduced energy consumption. 1 dwg, 8 tbl
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