Author:
Ubaldini Stefano,Povar Igor,Lupascu Tudor,Spinu Oxana,Trapasso Francesca,Passeri Daniele,Carloni Serena,Guglietta Daniela
Abstract
The application of a new hydrometallurgical process for gold extraction by thiosulphate leaching from Romanian mining wastes, coming from Balan and Deva deposits, was studied. There was obtained 85% of Au extraction after leaching; moreover, an integrated flow-sheet, including recycling of process solution and carbon, was outlined, based on results obtained at a laboratory scale, using a schematic chemical circuit of treatment. Global recovery of the process (leaching-adsorption-desorption-electrodeposition) of about 75-80% of Au was achieved. The developed integrated flow-sheet, allows to recycle the reagents during the process, with a loss of only 5-10%, in particular thiosulphate and alcohol, for each complete circuit of treatment.
Publisher
Institute of Chemistry of Academy of Science of Moldova
Subject
Process Chemistry and Technology,Environmental Chemistry,General Chemistry
Cited by
2 articles.
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