Title:
METHOD FOR PRODUCING NICKEL SULFATE COMPOUND
Document Type and Number:
WIPO Patent Application WO/2019/244527
Kind Code:
A1
Abstract:
This method for producing a nickel sulfate compound comprises: a conversion step (S1) for converting at least a part of a nickel-containing raw material (10) into a nickel sulfate compound by treating the nickel-containing raw material (10) with concentrated sulfuric acid in the presence of an abrasive material; a solid-liquid separation step (S2) for separating a mixture (11) obtained in the conversion step (S1) into a solid phase (21) and a liquid phase (22); and a dissolution separation step (S3) for adding water to the solid phase (21) obtained in the solid-liquid separation step (S2) and causing the nickel sulfate compound contained in the solid phase (21) to dissolve in water so as to separate impurities (32).
Inventors:
SAUDA KENZO (JP)
KOYANO KOJI (JP)
SHIRATORI NOBUO (JP)
KOYANO KOJI (JP)
SHIRATORI NOBUO (JP)
Application Number:
PCT/JP2019/019531
Publication Date:
December 26, 2019
Filing Date:
May 16, 2019
Export Citation:
Assignee:
JGC CORP (JP)
International Classes:
C01G53/10; C22B3/04; C22B3/44; C22B23/00; C23C18/32; C25D3/12
Foreign References:
| JP2011104584A | 2011-06-02 | |||
| CN107935063A | 2018-04-20 | |||
| JPS569338A | 1981-01-30 |
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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