| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a simple, economical process enabling separation of an alkali metal, in particular of potassium, from an ammonium metallate solution. <P>SOLUTION: The process for reducing the content of alkali metal impurities in the ammonium metallate solution is characterized by subjecting the ammonium metallate solution to membrane filtration. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
