African Journal of Biotechnology
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African Journal of Biotechnology Vol. 5 (5), pp. 448-452, 1 March 2006 ISSN 1684–5315 © 2006 Academic Journals
Effect of bacterial conditioning and the
flotation of copper ore and concentrate
A. Ekrem Yüce1*, H. Mustafa Tarkan2, M. Zeki
Doğan1
1ITU
Faculty of Mines, Mineral Processing Section, 34469 Maslak, Istanbul,
Turkey.
2Department
of Mining, Metals & Materials Engineering, McGill University 3610
University, Montreal, QC, H3A 2B2 Canada.
*Corresponding author. E-mail: yucea@itu.edu.tr.
Accepted 4
January, 2006 |
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| Abstract | |||||
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In this paper, the effect of bacterial conditioning on KBI Murgul (Turkey) copper concentrate was investigated by the use of Acidothiobacillus ferrooxidans (DSM 11477). The various parameters such as bacterial population, conditioning time and particle size were studied. Test results indicated the copper grade increase of about 22% in flotation copper ore through bacterial conditioning of pyrite surfaces resulting in pyrite depression.
Key words: Chalcopyrite, bio-oxidation, bacteria, mineral surface, froth flotation. |
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