Treatment process for electrolytic purifying of used solution for electrolytic tin plating
AssigneeNippon Steel Corporation
InventorsMinoru Yoshida, Susumu Yamaguchi, Yoshihiko Hirano
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Abstract
A process for regenerating an aqueous solution of organic electrolyte used for immersion or spraying treatment of tin plated materials prior to the melting treatment in the electrolytic tin plating, in which tin is removed from the solution and the regenerated solution is circulated and supplied for further use.
Claims11
In an electrolytic tin plating process wherein a material is subjected to a tin melting treatment and prior to the melting treatment, the material is contacted with a solution of an organic electrolyte, the improvement which comprises the organic electrolyte, after being used to contact the material being subjected to an electrolytic treatment to deposit the tin therefrom so as to maintain the tin concentration therein in the range from 0.2 to 5.0 g/l and the electrolytically treated solution being returned to the material contact step.
Dependencies are inferred from the claim text.