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Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/C54342B7-E99A-40E6-AEDD-C4AE78C13103 | ||
| Year | 1990 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
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| Bibliographic Citation | K. Komnitsas., F.D.Pooley," Bacterial oxidation of a refractory gold sulphide concentrate from Olympias, Greece," Minerals Engineering, vol. 4, no. 3-4, pp. 295–306, 1990. doi: 10.1016/0892-6875(90)90125-U | ||
| Appears in Collections |
The application of bacterial oxidation as a pretreatment step for the extraction of gold from arsenical gold sulphide concentrates offers potentially significant economic advantages over oxidative pretreatment alternatives. In this study the bacterial oxidation of an extremely refractory gold sulphide concentrate, from Olympias, Greece, is examined.Leaching tests were conducted in air-stirred pachuca reactors in order to determine the effect of pulp density on the degree of pyrite and arsenopyrite oxidation.Cyanidation tests were conducted in order to determine the degree of gold and silver liberation in relation to the degree of each sulphide phase oxidised and to the cyanide consumed.Mathematical analysis of the leaching data allowed the gold distribution in each sulphide mineral phase to be estimated and the gold recoveries according to the degree of each mineral oxidised predicted.
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