Title:
METHOD FOR PRODUCING NICKEL POWDER
Document Type and Number:
WIPO Patent Application WO/2017/209109
Kind Code:
A1
Abstract:
Provided is a method whereby it is possible to prevent equipment wear due to abrasion or impact between the equipment and nickel powder occurring during discharge thereof from a pressurized container, and nickel powder can be stably produced. In the present invention, a nickel sulfate amine complex liquid and nickel powder having a particle diameter of 0.1 µm to 300 µm are supplied to a reaction container, hydrogen gas is continuously supplied while the inside of the reaction container is maintained at a temperature in the range of 150°C to 250°C, and the pressure of a gas phase part is set to 2.5 MPa to 3.5 MPa, whereby nickel ions in the nickel sulfate amine complex liquid are reduced to nickel and deposited on the surfaces of the nickel powder supplied to the reaction container, a reacted slurry including the nickel sulfate amine complex liquid and the nickel powder is then transferred to a pressurized storage container at the same or slightly lower pressure than the internal pressure of the reaction container, and the pressure of the pressurized storage container to which the reacted slurry is transferred is then reduced, after which the reacted slurry is extracted from the pressurized storage container.
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Inventors:
TAKAISHI KAZUYUKI (JP)
HEGURI SHIN-ICHI (JP)
YAMAGUMA RYO-MA (JP)
OZAKI YOSHITOMO (JP)
DOI YASUO (JP)
HEGURI SHIN-ICHI (JP)
YAMAGUMA RYO-MA (JP)
OZAKI YOSHITOMO (JP)
DOI YASUO (JP)
Application Number:
PCT/JP2017/020044
Publication Date:
December 07, 2017
Filing Date:
May 30, 2017
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
B22F9/26
Foreign References:
| JP2015166489A | 2015-09-24 | |||
| JP2012160545A | 2012-08-23 |
Other References:
See also references of EP 3466571A4
Attorney, Agent or Firm:
SHOBAYASHI, Masayuki et al. (JP)
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