Use of Electrolytic Zinc Powder for Cementation of Gold from Cyanide Solutions

Features of gold cementation from cyanide solutions with electrolytic zinc powder are studied. The test powders are prepared by electro-extraction of alkaline solutions after leaching zinc-containing dust. Cementation is conducted in two regimes: under pressure (Merrill–Crowe process) and a fluidize...

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Bibliographic Details
Published in:Metallurgist (New York) 2018-09, Vol.62 (5-6), p.456-463
Main Authors: Yakornov, S. A., Naumov, K. D., Lobanov, V. G., Kozlov, P. A., Zelyakh, Ya. D., Krutikov, I. M., Skopin, D. Yu, Ivakin, D. A.
Format: Article
Language:English
Subjects:
Cementation
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cyanides
Dendritic powders
Feature extraction
Fluidized beds
Gold
Leaching
Materials Science
Metallic Materials
Powders (Particulate matter)
Zinc
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Summary:Features of gold cementation from cyanide solutions with electrolytic zinc powder are studied. The test powders are prepared by electro-extraction of alkaline solutions after leaching zinc-containing dust. Cementation is conducted in two regimes: under pressure (Merrill–Crowe process) and a fluidized bed regime. It is established that with respect to degree of gold extraction and specific consumption of test dendritic powder it is no worse or surpasses powders prepared by vapor condensation used traditionally in the gold extraction industry. The features established may be explained by physical features of powders prepared by electro-extraction from alkaline solutions.
ISSN:0026-0894
1573-8892
DOI:10.1007/s11015-018-0681-3