ELECTROWINNING METHOD FOR METAL MANGANESE AND HIGH PURITY METAL MANGANESE

摘要

PPROBLEM TO BE SOLVED: To provide an electrowinning method for obtaining high purity metal manganese by preparing an electrolytic solution including few impurities, and to provide the high purity metal manganese. PSOLUTION: The electrowinning method for metal manganese uses an electrolytic solution. The electrolytic solution is prepared by adding an oxidizer to a solution obtained by superfluously dissolving metal manganese into hydrochloric acid and filtering undissolved matter, further neutralizing the solution, filtering produced precipitates, and adding a buffer to the solution. The electrowinning method for metal manganese preferably uses an electrolytic solution which is obtained by adding hydrogen peroxide and aqueous ammonia to a solution obtained by further adding metal manganese to a hydrochloric acid solution of metal manganese and filtering undissolved matter, filtering produced precipitates in slightly acidic or neutral liquid, and adding a buffer to the solution. PCOPYRIGHT: (C)2007,JPO&INPIT