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Patent Searching and Data


Title:
METHOD FOR RECOVERING GOLD FROM AN ORE OR A REFINING INTERMEDIATE CONTAINING GOLD
Document Type and Number:
WIPO Patent Application WO/2017/170960
Kind Code:
A1
Abstract:
An object of the present invention is to provide a method for recovering gold in an ore or a refining intermediate by sufficiently leaching gold in a raw material resulting from the ore or the refining intermediate in an acidic solution containing a copper ion, an iron ion and a halide ion, which can contribute to improve the recovery rate of gold. Provided is a method for recovering gold from an ore or a refining intermediate containing gold, the method comprising a step of contacting a gold-containing raw material obtained from the ore or the refining intermediate with an acidic solution containing a copper ion, an iron ion and a halide ion while supplying an oxidizing agent to leach the gold component in the raw material, and the halide ion in the acidic solution comprising at least a bromide ion, wherein the concentration of the bromide ion in the acidic solution is 100 g/L or more or the concentration of the bromide ion in the acidic solution is less than 100 g/L, and wherein when the concentration of the bromide ion is less than 100 g/L, a concentration ratio of the halide ions in the acidic solution is such that a ratio of the concentration of the chloride ion to the concentration of the bromide ion (a Cl/Br concentration ratio) is 1/3 or less.

Inventors:
YOSHIMURA,Akira (JX Nippon Mining & Metals Corporation1-2,Shirogane-cho 1-chome,Hitachi-sh, Ibaraki 56, 〒3170056, JP)
ABE,Yoshifumi (JX Nippon Mining & Metals Corporation1-2,Shirogane-cho 1-chome,Hitachi-sh, Ibaraki 56, 〒3170056, JP)
Application Number:
JP2017/013456
Publication Date:
October 05, 2017
Filing Date:
March 30, 2017
Export Citation:
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Assignee:
JX NIPPON MINING & METALS CORPORATION (1-2Otemachi 1-chome, Chiyoda-ku Tokyo, 64, 〒1008164, JP)
International Classes:
C22B3/10; C22B3/00; C22B11/00
Foreign References:
AU2012244197A12013-06-13
AU2014245390A12015-10-22
CA1340169C1998-12-08
US20090241735A12009-10-01
AU2013204508A12014-03-20
JP2009526912A2009-07-23
Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (Shimbashi i-mark Bldg, 6-2 Shimbashi 2-Chome Minato-k, Tokyo 04, 〒1050004, JP)
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