| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for efficiently recovering high-purity boron from boron-containing drainage in which a multivalent metal such as iron concurrently presents. <P>SOLUTION: The method for recovering a boron solution comprises treating the boron-containing drainage 1 including at least a multivalent cation, passing an eluate 4 obtained by eluting the adsorbed boron from a resin 2 selectively adsorbing boron which adsorbs boron by a mineral acid solution through a free basic type weak basic anion exchange resin layer 7 and fractionating into the boron solution 8 and the mineral acid solution, wherein the eluate is passed through to the anion exchange resin layer in an upward flow. <P>COPYRIGHT: (C)2007,JPO&INPIT |
