low-grade refractory gold ore through physical beneficiation an thiourea leaching

Murthy, D S R and Kumar, Vinay and Rao, K V (2003) low-grade refractory gold ore through physical beneficiation an thiourea leaching. Hydrometallurgy, 68(1-3) (IF-1.227). pp. 125-130.

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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:low-grade gold ores; leaching; refractory ores; floatation
Divisions:Metal Extraction and Forming
ID Code:5396
Deposited By:Sahu A K
Deposited On:25 Jun 2012 09:43
Last Modified:08 Dec 2015 09:55
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