METHOD FOR REMOVING RARE EARTH IMPURITIES IN NICKEL ELECTROPLATING SOLUTION

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This method for removing rare earth impurities in a nickel electroplating solution is characterized in that after rare earth compounds are added to a nickel electroplating solution containing rare earth impurities, and the solution is maintained in a heated state for a fixed time at 60°C or above, precipitates precipitated by the heat are removed from the nickel electroplating solution by sedimentation and/or filtering together with the rare earth compounds that were added.