Method for producing nickel powder

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United States of America Patent

PATENT NO 10118224
APP PUB NO 20170008083A1
SERIAL NO

15114218

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Abstract

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Provided is a method for producing nickel powder from a nickel ammine sulfate complex solution, comprising treatment steps of: (1) a seed crystal production step of producing nickel powder having an average particle size of 0.1 to 5 μm; (2) a seed crystal addition step of adding the nickel powder obtained in the step (1) as seed crystals to form a mixed slurry; (3) a reduction step of forming a reduced slurry containing nickel powder formed by precipitation of a nickel component in the mixed slurry on the seed crystals; and (4) a growth step of performing solid-liquid separation to separate and recover the nickel powder as a solid phase component and then blowing hydrogen gas into a solution prepared by adding the nickel ammine sulfate complex solution to the recovered nickel powder to grow the nickel powder to form high purity nickel powder.

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Patent Owner(s)

Patent OwnerAddress
SUMITOMO METAL MINING CO LTD11-3 SHIMBASHI 5-CHOME MINATO-KU TOKYO 1058716 ?1058716
KOCHI UNIVERSITY NATIONAL UNIVERSITY CORPORATION5-1 AKEBONO-CHO 2-CHOME KOCHI-SHI KOCHI 780-8072

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Heguri, Shin-ichi Niihama, JP 42 31
Ikeda, Osamu Niihama, JP 176 2871
Kudo, Yohei Niihama, JP 22 51
Ohara, Hideki Niihama, JP 21 21
Ozaki, Yoshitomo Niihama, JP 48 128
Yanagisawa, Kazumichi Kochi, JP 17 46
Yoneyama, Tomoaki Niihama, JP 10 18
Zhang, Junhao Kochi, JP 21 14

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