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Title:
WET METALLURGY METHOD FOR NICKEL OXIDE MINERAL ORE
Document Type and Number:
WIPO Patent Application WO/2019/049593
Kind Code:
A1
Abstract:
Provided is a wet metallurgy method for a nickel oxide mineral ore, the method being capable of effectively increasing the pH of a processing liquid and capable of efficiently facilitating a sulfurization reaction using the processing liquid without causing a deterioration in the solid-liquid separation properties of a slurry following a neutralization reaction of a leachate. This wet metallurgy method for a nickel oxide mineral ore comprises subjecting a leachate, which is obtained by leaching a nickel oxide mineral ore through addition of sulfuric acid, to a neutralization treatment in a neutralization reaction tank 11, subjecting the neutralized slurry to solid-liquid separation in a solid-liquid separation apparatus 12 so as to obtain a neutralized liquid, and subjecting the neutralized liquid to a sulfurization treatment so as to separate and recover nickel and cobalt. A coagulant is added to a liquid feed line 13 that feeds the neutralized slurry from the neutralization reaction tank 11 to the solid-liquid separation apparatus 12, and the neutralized slurry that has passed through the liquid feed line 13 is subjected to solid-liquid separation.

Inventors:
TANAKA Masahiro (C/O SUMITOMO METAL MINING CO. LTD, 11-3, Shimbashi 5-chome, Minato-k, Tokyo 16, 〒1058716, JP)
HAYATA Jiro (C/O SUMITOMO METAL MINING CO. LTD, 11-3, Shimbashi 5-chome, Minato-k, Tokyo 16, 〒1058716, JP)
Application Number:
JP2018/029778
Publication Date:
March 14, 2019
Filing Date:
August 08, 2018
Export Citation:
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Assignee:
SUMITOMO METAL MINING CO., LTD. (11-3, Shimbashi 5-chome Minato-k, Tokyo 16, 〒1058716, JP)
International Classes:
C22B23/00; B01D21/01; C22B3/08; C22B3/22; C22B3/44
Domestic Patent References:
WO2008003160A12008-01-10
Foreign References:
JP2014101548A2014-06-05
JPH0760009A1995-03-07
US20150053623A12015-02-26
US20140150886A12014-06-05
JP2005213343A2005-08-11
JP2010075802A2010-04-08
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (Sapia Tower, 1-7-12 Marunouchi, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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