Murthy, D S R and Kumar, Vinay and Rao, K V (2003) Extraction of gold from an Indian low-grade refractory gold ore through physical beneficiation an thiourea leaching. Hydrometallurgy, 68 (1-3). pp. 125-130.
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Abstract
The work carried out on the processing of a low-grade and refractory gold ore using thiourea is presented. Direct leaching of the "as-received" ore with thiourea has yielded only 16% gold extraction. Starting with ore containing 14 g/t of gold, it has been possible to generate a sulphide concentrate with 6.1 g/t of gold by physical beneficiation of the ore through froth flotation. Thiourea leaching of this flotation concentrate after pressure, pre-oxidation has resulted in gold extraction of 98%, with an overall gold recovery of 74%. Pressure oxidation was found to be slightly superior to roasting for the pre-oxidation of the refractory gold ore/concentrate. (C) 2003 Elsevier Science B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Official URL/DOI: | http://www.sciencedirect.com/science/article/pii/S... |
| Uncontrolled Keywords: | Recovery, concentrate, oxidation |
| Divisions: | Director Office |
| ID Code: | 5328 |
| Deposited By: | Sahu A K |
| Deposited On: | 18 May 2012 16:23 |
| Last Modified: | 04 Sep 2012 10:09 |
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