Title:
NICKEL POWDER PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2015/122534
Kind Code:
A1
Abstract:
Provided is a method for producing fine nickel powder suitable for use as a seed crystal in the production of nickel powder from a solution containing a nickel sulfate ammine complex. The production method for nickel powder is characterized by producing nickel powder by performing, in order: a mixing step in which a solution containing the nickel sulfate ammine complex has added thereto an insoluble solid that is insoluble in the solution and a dispersant including a sulfonate, and a mixed slurry is formed; a reduction/precipitation step in which after the mixed slurry is introduced into a reaction tank, hydrogen gas is blown into the mixed slurry inside the reaction tank, nickel complex ions contained in the mixed slurry are reduced, and a nickel precipitate is formed on the surface of the insoluble solid; and a separation step in which the nickel precipitate on the surface of the insoluble solid is separated from the surface of the insoluble solid and nickel powder is formed.
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Inventors:
YANAGISAWA KAZUMICHI (JP)
ZHANG JUNHAO (JP)
HEGURI SHIN-ICHI (JP)
OZAKI YOSHITOMO (JP)
TAKAISHI KAZUYUKI (JP)
OHARA HIDEKI (JP)
YONEYAMA TOMOAKI (JP)
IKEDA OSAMU (JP)
KUDO YOHEI (JP)
ZHANG JUNHAO (JP)
HEGURI SHIN-ICHI (JP)
OZAKI YOSHITOMO (JP)
TAKAISHI KAZUYUKI (JP)
OHARA HIDEKI (JP)
YONEYAMA TOMOAKI (JP)
IKEDA OSAMU (JP)
KUDO YOHEI (JP)
Application Number:
PCT/JP2015/054280
Publication Date:
August 20, 2015
Filing Date:
February 17, 2015
Export Citation:
Assignee:
KOCHI UNIVERSITY NAT UNIVERSITY CORP (JP)
SUMITOMO METAL MINING CO (JP)
SUMITOMO METAL MINING CO (JP)
International Classes:
B22F9/26
Domestic Patent References:
WO2007004664A1 | 2007-01-11 |
Foreign References:
JP2005510625A | 2005-04-21 | |||
JPH10219363A | 1998-08-18 | |||
JPS6379904A | 1988-04-09 | |||
JP2011214143A | 2011-10-27 |
Other References:
See also references of EP 3108986A4
Attorney, Agent or Firm:
OSHIDA Yoshitaka (JP)
Yoshitaka Oshida (JP)
Yoshitaka Oshida (JP)
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