Title:
METHOD FOR PRETREATMENT OF GOLD ORE
Document Type and Number:
WIPO Patent Application WO/2014/155752
Kind Code:
A1
Abstract:
Provided is a method for pretreatment of gold ore in order to leach out gold from gold ore containing pyrite using wet treatment, and with which it is possible to suppress the generation of sulfur dioxide and to improve the leaching speed of gold. This method for pretreatment of gold ore contains a step in which at least 60% of the pyrite (FeS2) in gold ore is converted into pyrrhotite represented by the following formula: Fe1-xS (where x = 0 to 0.2).
Inventors:
HATANO KAZUHIRO (JP)
AOTO YUKI (JP)
AOTO YUKI (JP)
Application Number:
PCT/JP2013/060869
Publication Date:
October 02, 2014
Filing Date:
April 10, 2013
Export Citation:
Assignee:
JX NIPPON MINING & METALS CORP (JP)
International Classes:
C22B11/00; C22B1/02
Foreign References:
| JP2008106347A | 2008-05-08 | |||
| JP2005042155A | 2005-02-17 | |||
| JPS369153B |
Other References:
BROWNER, R.E. ET AL.: "Effect of pyrrhotite reactivity on cyanidation of pyrrhotite produced by pyrolysis of a sulphide ore", MINERALS ENGINEERING, vol. 11, no. 9, September 1998 (1998-09-01), pages 813 - 820
Attorney, Agent or Firm:
AXIS Patent International (JP)
Axis international patent business corporation (JP)
Axis international patent business corporation (JP)
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