Murthy, D S R and Kumar, Vinod and Rao, K V (2003) Extraction of gold from an Indian low-grade refractory gold ore through physical beneficiation and thiourea leaching. Hydrometallurgy, 68 (1-3). pp. 125-130.
![[thumbnail of D._S._R._Murthy.pdf]](http://eprints.nmlindia.org/style/images/fileicons/application_pdf.png "D._S._R._Murthy.pdf")
PDF
D._S._R._Murthy.pdf - Published Version
Restricted to NML users only. Others may use ->
Download (114kB) | Request a copy
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 1.4 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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Low-grade gold ores; Leaching; Refractory ores; Floatation |
| Subjects: | Metallurgy > Extractive Metallurgy |
| Divisions: | Material Science and Technology |
| Depositing User: | Users 6 not found. |
| Date Deposited: | 16 Nov 2009 10:05 |
| Last Modified: | 25 Jan 2012 06:02 |
| URI: | http://eprints.nmlindia.org/id/eprint/271 |
Actions (login required)
- View Item