Title:
金を含む鉱石もしくは精錬中間物からの金の回収方法
Document Type and Number:
Japanese Patent JP6849482
Kind Code:
B2
Abstract:
A method for recovering gold from an ore or a refining intermediate containing gold, 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. The halide ion in the acidic solution is only 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. When the concentration of the bromide ion is less than 100 g/L, a concentration ratio of the halide ion in the acidic solution is such that a ratio of the concentration of the chloride ion to the concentration of the bromide ion is ⅓ or less.
Inventors:
Yoshimura Akira
Yoshifumi Abe
Yoshifumi Abe
Application Number:
JP2017040605A
Publication Date:
March 24, 2021
Filing Date:
March 03, 2017
Export Citation:
Assignee:
JX Nippon Mining & Metals Co., Ltd.
International Classes:
C22B11/00
Domestic Patent References:
| JP2013112879A | ||||
| JP2014205869A | ||||
| JP2015148018A | ||||
| JP2014198887A | ||||
| JP2014198888A |
Attorney, Agent or Firm:
Axis International Patent Business Corporation