Title:
NICKEL POWDER PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/150717
Kind Code:
A1
Abstract:
Provided is a production method in which a solution, a seed crystal, and hydrogen gas are continuously supplied into a reaction container so as to achieve production of a nickel powder, and the formed powder is continuously discharged, so that a high operating rate for reactions can be maintained while the product quality is maintained. The nickel powder production method is characterized by supplying a nickel sulfate ammine complex solution and a seed crystal into a reaction container, and by supplying hydrogen gas into the reaction container, so as to subject nickel complex ions in the nickel sulfate ammine complex solution to reduction treatment, thereby to produce a nickel powder, wherein the reduction treatment is characterized in that the temperature in the reaction container is controlled to be within a range of 150-185ºC while the nickel sulfate ammine complex solution is continuously supplied into the reaction container, and in that the supply amount of the hydrogen gas is controlled such that the internal pressure of the reaction container is kept within a range of 2.5-3.5 MPa.
Inventors:
OZAKI YOSHITOMO (JP)
HEGURI SHIN-ICHI (JP)
TAKAISHI KAZUYUKI (JP)
YAMAGUMA RYO-MA (JP)
HEGURI SHIN-ICHI (JP)
TAKAISHI KAZUYUKI (JP)
YAMAGUMA RYO-MA (JP)
Application Number:
PCT/JP2017/008562
Publication Date:
September 08, 2017
Filing Date:
March 03, 2017
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
B22F9/26; B22F1/00
Domestic Patent References:
| WO2015146989A1 | 2015-10-01 |
Foreign References:
| JPH01130724A | 1989-05-23 | |||
| JP2015140480A | 2015-08-03 |
Other References:
See also references of EP 3424627A4
Attorney, Agent or Firm:
OSHIDA Yoshitaka (JP)
Download PDF:
Previous Patent: ENDOSCOPE TRAINING DEVICE, ENDOSCOPE TRAINING METHOD, AND RECORDING MEDIUM
Next Patent: POLYAMIDE RESIN COMPOSITION
Next Patent: POLYAMIDE RESIN COMPOSITION