Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
MICROBIAL PRE-TREATMENT OF DOUBLE REFRACTORY GOLD ORES
Document Type and Number:
WIPO Patent Application WO/2009/069005
Kind Code:
A3
Abstract:
The present invention is directed to recovery of gold from refractory and double refractory ores using a fungal agent and/or culture media. The fungal agent is inoculated in the feed material to either decompose sulfide sulfur or deactivate preg robbing carbon The culture media is applied, m the absence of a microbe, to decompose some sulfide sulfur and release a portion of the gold.

Inventors:
YEN WAN-TAI (CA)
AMANKWAY RICHARD KWASI (GH)
CHOI YEONUK (CA)
Application Number:
PCT/IB2008/003905
Publication Date:
April 28, 2011
Filing Date:
November 21, 2008
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
BARRICK GOLD CORP (CA)
YEN WAN-TAI (CA)
AMANKWAY RICHARD KWASI (GH)
CHOI YEONUK (CA)
International Classes:
C22B3/18; C22B11/00
Foreign References:
US5021088A1991-06-04
US5413624A1995-05-09
US5127942A1992-07-07
RU2057815C11996-04-10
Other References:
ESPINOSA, F.: "Study of native micro-organisms in bioleaching processes of refractory auriferous minerals and its use as a tool for bio-regeneration.", PUBLICATIONS OF THE AUSTRALASIAN INST.OF MIN. AND MET., BAC-MIN 2004 CONFERENCE, June 2004 (2004-06-01), pages 159 - 162
Download PDF: