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Bioleaching of Refractory Arsenical Pyrite Concentrates to Enhance Gold Extraction
Luleå University of Technology.
Luleå University of Technology.
1991 (English)In: Scandinavian journal of metallurgy, ISSN 0371-0459, E-ISSN 1600-0692, Vol. 20, no 6, p. 346-350Article in journal (Refereed) Published
Abstract [en]

A thermophilic species, Sulfolobus acidocaldarius, strain BC, has been used for the bioleaching of refractory arsenical pyrite concentrates to enhance Au extraction in cyanidation. The results of laboratory batch tests on two concentrates are presented. In both cases, Au extraction rates were greatly increased from < 11% with only cyanidation to > 90% with the bioleaching pretreatment. The behaviour of arsenopyrite and pyrite is described during the bio-oxidation course. Correlations are determined between the degree of the arsenopyrite/pyrite oxidation and the Au extraction rate.

Place, publisher, year, edition, pages
1991. Vol. 20, no 6, p. 346-350
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-2846Scopus ID: 2-s2.0-0026397534Local ID: 08f95cb0-0af8-11dd-ae49-000ea68e967bOAI: oai:DiVA.org:ltu-2846DiVA, id: diva2:975700
Note
Godkänd; 1991; 20080415 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2023-10-06Bibliographically approved

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