Title:
METHOD FOR RECOVERING GOLD
Document Type and Number:
WIPO Patent Application WO/2014/042131
Kind Code:
A1
Abstract:
Provided is a method for recovering gold with which it is possible to increase the amount of gold adsorbed by activated carbon. This method for recovering gold comprises: a step for obtaining a gold leachate by using an acidic leaching solution including chloride ions and/or bromide ions as anions and copper as a cation, and leaching out gold into the acidic leaching solution; and a step for letting activated carbon adsorb the gold in the gold leachate. The method comprises a step for reducing the concentration of monovalent copper ions included in the gold leachate by adjusting the oxidation-reduction potential (reference electrode: silver/silver chloride) of the gold leachate before letting the activated carbon adsorb the gold in the gold leachate.
Inventors:
HATANO KAZUHIRO (JP)
KATSUKAWA KOJI (JP)
SANO MASAKI (JP)
KATSUKAWA KOJI (JP)
SANO MASAKI (JP)
Application Number:
PCT/JP2013/074289
Publication Date:
March 20, 2014
Filing Date:
September 09, 2013
Export Citation:
Assignee:
JX NIPPON MINING & METALS CORP (JP)
International Classes:
C22B11/00; C22B3/04; C22B3/24
Foreign References:
| JP2009235525A | 2009-10-15 | |||
| JP2009235519A | 2009-10-15 | |||
| JP2009526912A | 2009-07-23 | |||
| JP2001516808A | 2001-10-02 |
Attorney, Agent or Firm:
AXIS Patent International (JP)
Axis international patent business corporation (JP)
Axis international patent business corporation (JP)
Download PDF: