申请日期 | 2025-06-25 | 申请号 | US14771327 |
公开(公告)号 | US9873953B2 | 公开(公告)日 | 2018-01-23 |
公开国别 | US | 申请人省市代码 | 全国 |
申请人 | HITACHI METALS LTD | ||
简介 | A method for removing rare earth impurities from a nickel-electroplating solution by adding a rare earth compound to the nickel-electroplating solution containing rare earth impurities, keeping the electroplating solution at 60° C. or higher for a certain period of time, and then removing precipitate generated by the heating from the nickel-electroplating solution together with the added rare earth compound by sedimentation and/or filtration. |
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