Title:
硫化鉱からの金の浸出方法
Document Type and Number:
Japanese Patent JP5792043
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method that can inhibit the gold concentration in a solution after leaching in time progress from dropping after gold is leached out of a sulfide mineral.SOLUTION: This method for leaching gold out the sulfide mineral or out of residual dross (hereinafter, referred to as a "raw material") after leaching is processed to the sulfide mineral, includes a process to leach a gold component out of a raw material by contacting acidic water solution containing chlorine ion, bromine ion, copper ion, and iron ion with the material under the supply of an oxidizing agent, and to keep the bromine ion concentration in the acidic water solution, out of which gold has been leached, to 40 g/L or higher and the oxidation-reduction potential to 500 mV (vs. Ag/AgCl) or higher.
Inventors:
Kazuhiro Hatano
Koji Katsukawa
Ei Ono
Koji Katsukawa
Ei Ono
Application Number:
JP2011262397A
Publication Date:
October 07, 2015
Filing Date:
November 30, 2011
Export Citation:
Assignee:
jx Nippon Mining & Metals Co., Ltd.
International Classes:
C22B11/00; C22B3/44
Domestic Patent References:
| JP2009235525A | ||||
| JP2008106347A | ||||
| JP11199945A |
Other References:
J.A.Whitehead、他3名,Comparative leaching of a sulfidic gold ore in ionic liquid and aqueous acid with thiourea and halides using Fe(III) or HSO5 - oxidant,Hydrometallurgy,NL,2009年 9月,Vol.98 No.3-4 ,Page.276-280
Attorney, Agent or Firm:
Axis International Patent Business Corporation