Title:
ラテライトニッケル鉱石のための大気圧浸出方法
Document Type and Number:
Japanese Patent JP2005523996
Kind Code:
A
Abstract:
An atmospheric leach process in the recovery of nickel and cobalt from lateritic ores, said processing including the steps of: a) separating the lateritic ore into a low magnesium containing ore fraction, and a high magnesium containing ore fraction by selective mining or post mining classification; b) separately slurrying the separated ore fractions; c) leaching the low magnesium containing ore fraction with concentrated sulphuric acid as a primary leach step; and d) introducing the high magnesium content ore slurry following substantial completion of the primary leach step and precipitating iron as goethite or another low sulphate containing form of iron oxide or iron hydroxide, wherein sulphuric acid released during iron precipitation is used to leach the high magnesium ore fraction as a secondary leach step.
Inventors:
Liu, Ho Yang
Gilla Spie, James Dee
Lewis, Corrally Adele
Newdorf, David
Barnet, Stephen
Gilla Spie, James Dee
Lewis, Corrally Adele
Newdorf, David
Barnet, Stephen
Application Number:
JP2004501651A
Publication Date:
August 11, 2005
Filing Date:
March 14, 2003
Export Citation:
Assignee:
Kuni Technology Pty Limited
International Classes:
C22B23/00; C22B3/04; C22B3/08; C22B3/44; (IPC1-7): C22B23/00; C22B3/04; C22B3/44
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto