Process for the re-extraction of indium from an organic solvent phase

摘要

Process for the re-extraction of indium from an indium-containing organic solvent phase based on a monoalkyl alkylphosphonate. The extractant used is an aqueous solution containing hydrochloric acid and a chloride of a metal which is more electropositive than indium. Suitable metal chlorides are in particular alkali metal chlorides and alkaline earth metal chlorides. <IMAGE>