Affiliation:
1. Ural Federal University
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.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics
Reference20 articles.
1. J. J. Coleman Dry Cell Dynamics: The Bobbin, Trans. Electrochem. Soc. 90 (1946) 545-583.
2. V.S. Daniel-Bek On polarization of porous electrodes. I Distribution of current and potential inside the electrode, Zh. Fiz. Khim. 22 (1948) 697-710.
3. V.S. Daniel-Bek On polarization of porous electrodes. II Features of porous electrodes of finite thickness, Elektrokhimiya. 1 (1964) 354-359.
4. V.S. Daniel-Bek On polarization of porous electrodes. III. The work of a porous electrode in the region of small polarization values, Elektrokhimiya. 1 (1965) 1319-1324.
5. R. E. Sioda Distribution of potential in a porous electrode under conditions of flow electrolysis, Electrochimica Acta. 16 (1971) 1569-1576.