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Journal of the Southern African Institute of Mining and Metallurgy
On-line version ISSN 2411-9717
Print version ISSN 2225-6253
Abstract
DEHGHANI, A.; OSTAD-RAHIMI, M.; MOJTAHEDZADEH, S.H. and GHARIBI, Kh.K.. Recovery of gold from the Mouteh Gold Mine tailings dam. J. S. Afr. Inst. Min. Metall. [online]. 2009, vol.109, n.7, pp.417-421. ISSN 2411-9717.
It is estimated that the tailings dam of the Mouteh Gold Mine, in Iran, contains more than 770 kg of gold. Microscopic analysis reveals that sulphide minerals and active carbon are the main sources of the gold in the tailings residue. Flotation and cyanidation tests on the samples of tailings were conducted. Flotation concentrates, containing around 87.79% of the gold, which were associated with sulphide minerals, were recovered. By regrinding, roasting, and cyanidation of the flotation concentrate, the gold dissolution recovery was in the range of 87.8 to 98.4%. The carbon-in-column method was used to recover 98% of the gold from the solution.
Keywords : gold ore; pyrite; flotation; roasting; cyanidation.
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