Title:
A way gold from the gold ore stone containing a sulfide of iron oozes
Document Type and Number:
Japanese Patent JP6038192
Kind Code:
B2
Abstract:
A method for leaching gold from a gold ore containing pyrite, in which the gold leaching rate is improved without requiring the use of a highly toxic chemical substance such as cyan, thiourea, thiosulfuric acid and a halogen gas. A method for leaching gold, comprising: a pretreatment step comprising a step (1) of providing a gold ore containing pyrite and a step (2) of oxidizing and roasting the gold ore; and a step (3) of bringing the pretreated gold ore into contact with a gold-leaching solution containing a halide ion while supplying an oxidizing agent to thereby leach a gold component from the ore and then carrying out the solid/liquid separation of the resultant product into a solution having gold leached therein and an iron-containing residue.
Inventors:
Kazuhiro Hatano
Yuki Aoto
Takeshi Nakamura
Yuki Aoto
Takeshi Nakamura
Application Number:
JP2014560626A
Publication Date:
December 07, 2016
Filing Date:
April 10, 2013
Export Citation:
Assignee:
JX Nippon Mining & Metals Co., Ltd.
International Classes:
C22B11/00; C22B1/02; C22B3/10
Domestic Patent References:
| JP2009526912A | 2009-07-23 | |||
| JPH07508073A | 1995-09-07 | |||
| JP2009235525A | 2009-10-15 | |||
| JP2009526912A | 2009-07-23 | |||
| JPH07508073A | 1995-09-07 |
Foreign References:
| US5364444A | 1994-11-15 |
Other References:
JPN6013031169; ＡＲＲＩＡＧＡＤＡ， Ｆ． Ｊ． ｅｔ ａｌ．: 'ＲＯＡＳＴＩＮＧ ＯＦ ＡＵＲＩＦＥＲＯＵＳ ＰＹＲＩＴＥ ＣＯＮＣＥＮＴＲＡＴＥＳ' Ｐｒｏｃｅｓｓ Ｍｉｎｅｒａｌｏｇｙ ２： Ａｐｐｌｉｃａｔｉｏｎｓ ｉｎ Ｍｅｔａｌｌｕｒｇｙ， Ｃｅｒａｍｉｃｓ ａｎｄ Ｇｅｏｌｏｇｙ , 1982, ｐ． １７３-１８６
Attorney, Agent or Firm:
Axis International Patent Business Corporation
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