| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve such a problem in a method of manufacturing an electric tin by electrolytic refining, using a tin anode, that the electrodeposition condition of a tin metal deteriorates, accompanied with the gradual discoloration of an electrolytic solution. <P>SOLUTION: The method of manufacturing the electric tin by electrolytic refining, using the tin anode, includes the execution of the electrolytic refining while controlling the oxidation-reduction potential of the electrolytic solution (silver/silver chloride electrode reference) to be -800 mV or more. <P>COPYRIGHT: (C)2012,JPO&INPIT |
