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FROM THE OPERATIONAL EXPERIENCE OF THE MINING COMPANIES AND THE ORGANIZATIONS
OJSC «IRGIREDMET»
ArticleName Bacterial leaching of refractory ores and concentrates
ArticleAuthor Gudkov S. S., Shketova L. E., Mikhajlova A. N.
ArticleAuthorData

Gudkov S. S., Head of Laboratory; Shketova L. E., Researcher; Mikhajlova A. N., Engineer, e-mail: emelyanov@irgiredmet.ru, IRGIREDMET.
Abstract
The results of gold extraction of refractory ores, contained finely impreguated gold and silver in sulphides have been presented. The technological schemes, included thermal chemical (final roasting) or hydro-metallurgical (autoclave and bacterial leaching) methods of sulphide oxidation, previous to cyanide gold extraction have been developed. The technology of heap leaching of primary pyritous-arsenic pyritous ores with obtaining high indice of gold extraction from products of heap bacteria leaching has been proposed.
keywords Bacterial leaching, refractory ores, gold, sulphide decomposition, technological scheme.
References
1. Lodeyshchikov V. V. Tekhnologiya izvlecheniya zolota i serebra iz upornykh rud: v 2-kh tomakh (The Technology of Gold and Silver extraction from refractory ores : in 2 volumes). Irkutsk, 1999.
2. Karavayko G. I., Sedelnikova G. V., Aslanukov R. Ya. and etc. Biogidrometallurgiya zolota i serebra (Biohydrometallurgy of gold and silver). Tsvetnye metally - Non-ferrous Metals. 2000. No. 8.
3. Lodeyshchikov V. V. Sostoyanie issledovaniy i prakticheskikh razrabotok v oblasti biogidrometallurgicheskoy pererabotki upornykh zolotosoderzhashchikh rud i kontsentratov : obzor (Status of research and practical developments in the field biohydrometallurgical processing of refractory gold-bearing ores and concentrates: a review). Irkutsk, 1993.
Language of full-text russian
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