Abstract
In the present work, gold electroextraction technological features on three-dimensional cathode are studied. Zinc powders are used as cathode. Similar ones are used to gold cementation from cyanide solutions. The studies object was production of cyanide solution of following composition, mg/dm3: 7 Au. 123.65 Zn, 670 CN-; pH 10.3. Electroextraction laboratory studies were carried out in cylindrical electrolyzer with a horizontal arrangement of current-carrying electrode. It has been found that zinc powders polarization contributes to more complete gold deposition from cyanide solutions. Moreover, it allows to reduce zinc transition into spent solution, as a consequence, zinc consumption reduces. At the same time, under investigated conditions, significant cyanide oxidation does not occur.
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