| 摘要 |
<p>PURPOSE:To selectively separate and recover Mo and V from a water solution contg. a large amount of Al at a high extraction rate by using a solvent contg. a specified hydroxyoxime compound. CONSTITUTION:A water solution in which Mo and/or V and Al coexist is brought into contact with a solvent contg., as an extractant, hydroxyoxime compd. represented by the formula at pH of <=2 to selectively extract Mo and V. In the formula, R1, R3 are alkyl groups having 6-20C straight chain or having side chain, and R2 is hydrogen or an alkyl group having 1-6C straight chain or having side chain. As a typical extractant by the formula, 5,8-diethyl-7- hydroxydodecane-6-oxime, 5,10-diethyl-8-hydroxytetradecane-7-oxime or the like are cited. The volume ratio of the solvent to the water solution on extraction is normally 1:10 to 10:1. In this way, Mo and V are selectively separated and recovered from Al-contg. water solution.</p> |
