Method for aqueous gold thiosulfate extraction using copper-cyanide pretreated carbon adsorption
Abstract
A gold thiosulfate leaching process uses carbon to remove gold from the leach liquor. The activated carbon is pretreated with copper cyanide. A copper (on the carbon) to gold (in solution) ratio of at least 1.5 optimizes gold recovery from solution. To recover the gold from the carbon, conventional elution technology works but is dependent on the copper to gold ratio on the carbon.
- Inventors:
- Issue Date:
- Research Org.:
- Virginia Polytechnic Institute & State University (US)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1089418
- Patent Number(s):
- 8500847
- Application Number:
- 13/094,139
- Assignee:
- NETL
- Patent Classifications (CPCs):
-
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- DOE Contract Number:
- FC26-02NT41607; FC26-05NT42457
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Young, Courtney, Melashvili, Mariam, and Gow, Nicholas V. Method for aqueous gold thiosulfate extraction using copper-cyanide pretreated carbon adsorption. United States: N. p., 2013.
Web.
Young, Courtney, Melashvili, Mariam, & Gow, Nicholas V. Method for aqueous gold thiosulfate extraction using copper-cyanide pretreated carbon adsorption. United States.
Young, Courtney, Melashvili, Mariam, and Gow, Nicholas V. Tue .
"Method for aqueous gold thiosulfate extraction using copper-cyanide pretreated carbon adsorption". United States. https://www.osti.gov/servlets/purl/1089418.
@article{osti_1089418,
title = {Method for aqueous gold thiosulfate extraction using copper-cyanide pretreated carbon adsorption},
author = {Young, Courtney and Melashvili, Mariam and Gow, Nicholas V},
abstractNote = {A gold thiosulfate leaching process uses carbon to remove gold from the leach liquor. The activated carbon is pretreated with copper cyanide. A copper (on the carbon) to gold (in solution) ratio of at least 1.5 optimizes gold recovery from solution. To recover the gold from the carbon, conventional elution technology works but is dependent on the copper to gold ratio on the carbon.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 06 00:00:00 EDT 2013},
month = {Tue Aug 06 00:00:00 EDT 2013}
}
Works referenced in this record:
Cyanide detoxification process
patent, April 2003
- Misra, Manoranjan; Priyadarshan, Gautam; Jena, Birendra Kumar
- US Patent Document 6,551,514
Recovery of precious metals
patent, August 1985
- Lakshmanan, Vaikuntam I.; Biskupski, Jurgen K.
- US Patent Document 4,537,628