METHOD OF RECOVERING GOLD FROM WASTES Russian patent published in 1997 - IPC

Abstract RU 2095478 C1

FIELD: gold recovery. SUBSTANCE: invention relates to electrochemically dissolving gold when it is to be recovered from galvanic waste and gold-containing ores in presence of protein-nature complexing agent. Process is carried out with anode polarization of gold-containing raw material at potential 1.2 to 1.4 V (normal H-electrode) in presence of enzymatic protein hydrolyzate from microorganism biomass with hydrolysis degree at least 0.65, amine nitrogen content 0.02-0.04 g/l, and sodium chloride concentration 0.1 M (pH 4-6). EFFECT: reduced cost due to utilization of inexpensive complexing agent. 1 tbl

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RU 2 095 478 C1

Authors

Bogdanovskaja V.A.

Tarasevich M.R.

Krylov I.A.

Krasnoshtanova A.A.

Manakov M.N.

Dates

1997-11-10Published

1996-04-25Filed