Title:
NICKEL POWDER PRODUCTION METHOD AND NICKEL POWDER PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/221787
Kind Code:
A1
Abstract:
Provided is a method with which it is possible to prevent equipment, such as piping and valves, used to discharge and recover a nickel powder-containing slurry from a high pressure reaction tank from being damaged and trapping the nickel powder therein and to enable continuous operation, thereby improving the productivity. This nickel powder production method comprises a step of reacting a nickel sulfate-ammine complex solution with hydrogen gas under high pressure in a reaction tank, thereby obtaining a nickel powder slurry containing nickel powder. The method is characterized in that the nickel powder slurry is discharged and transferred through discharge piping from the reaction tank in which the nickel powder-containing slurry has been produced, and then a washing solution is supplied to the discharge piping at a predetermined pressure to wash the discharge piping.
Inventors:
TAKAISHI KAZUYUKI (JP)
OZAKI YOSHITOMO (JP)
HEGURI SHIN-ICHI (JP)
OZAKI YOSHITOMO (JP)
HEGURI SHIN-ICHI (JP)
Application Number:
PCT/JP2017/021980
Publication Date:
December 28, 2017
Filing Date:
June 14, 2017
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
B22F9/26
Foreign References:
| JP2016033255A | 2016-03-10 | |||
| JPS4829553Y1 | 1973-09-07 | |||
| JP2015212411A | 2015-11-26 | |||
| JP2005350766A | 2005-12-22 | |||
| JP2010059489A | 2010-03-18 | |||
| JP2014240524A | 2014-12-25 |
Other References:
See also references of EP 3473362A4
Attorney, Agent or Firm:
SHOBAYASHI, Masayuki et al. (JP)
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