Journal article
Solvent elution of gold from C.I.P. carbon
Hydrometallurgy, Vol.14(1), pp.47-65
1985
Abstract
The effectiveness of the solvents in promoting gold desorption from activated carbon is in the order acetonitrile > methyl ethyl ketone ⩾ acetone ⪢ dimethylformamide > ethanol. Aqueous acetonitrile and aqueous acetone strip gold in < 8 h using 2–3 bed volumes at temperatures between 25 and 70°C. These organic solvents in particular are strongly adsorbed onto carbon and significantly increase the activity of CN− relative to Au(CN)2−. Acetonitrile is quantitatively steam stripped from carbon and has little effect on the kinetic activity of carbon and on the electrowinning or cementation of gold. However, acetone is not so readily recovered from carbon and causes a significant loss of carbon activity.
The concentrated gold eluates are readily electrowon in a batch or continuous mode using a simple diaphragm cell to give gold bullion foil. Preliminary cost analysis indicates that this procedure is cheaper than the Zadra elution procedure and comparable to the Anglo elution procedure.
Details
- Title
- Solvent elution of gold from C.I.P. carbon
- Authors/Creators
- D.M. Muir (Author/Creator)W. Hinchliffe (Author/Creator)N. Tsuchida (Author/Creator)M. Ruane (Author/Creator)
- Publication Details
- Hydrometallurgy, Vol.14(1), pp.47-65
- Publisher
- Elsevier BV
- Identifiers
- 991005543161207891
- Copyright
- © 1985 Published by Elsevier B.V.
- Murdoch Affiliation
- School of Chemical and Mathematical Science
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 7 Engineering & Materials Science
- 7.229 Mineral & Metal Processing
- 7.229.774 Bioleaching
- Web Of Science research areas
- Metallurgy & Metallurgical Engineering
- ESI research areas
- Materials Science