- 专利标题: METHOD FOR PRODUCING NICKEL POWDER
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申请号: EP15751434申请日: 2015-02-09
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公开(公告)号: EP3108987A4公开(公告)日: 2018-02-07
- 发明人: YANAGISAWA KAZUMICHI , ZHANG JUNHAO , IKEDA OSAMU , OHARA HIDEKI , YONEYAMA TOMOAKI , KUDO YOHEI , HEGURI SHIN-ICHI
- 申请人: KOCHI UNIV NATIONAL UNIV CORPORATION , SUMITOMO METAL MINING CO
- 专利权人: KOCHI UNIV NATIONAL UNIV CORPORATION,SUMITOMO METAL MINING CO
- 当前专利权人: KOCHI UNIV NATIONAL UNIV CORPORATION,SUMITOMO METAL MINING CO
- 优先权: JP2014031253 2014-02-21; JP2014051219 2014-03-14
- 主分类号: B22F9/26
- IPC分类号: B22F9/26 ; B22F1/00
摘要:
Provided is an efficient method for producing nickel powder from a solution containing a nickel ammine complex, the method including adding seed crystals to a solution containing a nickel ammine complex and subjecting the resulting mixture to hydrogen reduction under high temperatures and high pressures to produce nickel powder, which makes it possible to maintain the quality of the nickel powder produced and reduce the amount of the seed crystals used. The method for producing nickel powder is characterized by adding seed crystals and a dispersant having an anionic functional group to the solution containing a nickel ammine complex to form a mixture slurry, and subjecting the mixture slurry to pressurized hydrogen reduction treatment by blowing hydrogen into the mixture slurry in a high temperature and high pressure atmosphere to cause a reduction reaction, thereby reducing the nickel ammine complex in the mixture slurry to obtain nickel powder.
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