2017 Volume 28 Issue 1 Pages 19-28
Rare metals have seen an exponential increase in demand because of its widespread application in electrical and electronic devices. However, actual condition is that Japan can not help but depending import most all of rare metal. Moreover, supply situation is affected by changing global situation. Because, producing country is eccentrically-located. Therefore, it is necessary to generate and maintain a stable supply of rare metal. Currently, urban mine is draw attention as resource supply source. Rare metal is separated and recovered from urban mines by solvent extraction. However, this method is disadvantageous because of the use of organic solvents in large quantities. In this study, we focused on ionic liquid. Ionic liquid has a feature of non-volatility and fire retardancy. In this work, we report on performance about using ionic liquid as diluent of extractant.
