Liquid/liquid extraction of gallium values from basic aqueous solutions thereof
AssigneeRhone-Poulenc Industries
InventorsJacques Helgorsky, Alain Leveque
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Abstract
Gallium values are recovered from basic aqueous solutions thereof, especially from sodium/aluminum liquors of Bayer process origin, by liquid/liquid extraction with a water immiscible organic phase comprising an organic solvent and, dissolved therein, an organic-solvent-soluble substituted hydroxyquinoline and an organic carboxylic acid compound.
Claims17
In a process for recovering gallium values contained in a basic aqueous solution by a liquid/liquid extraction comprising contacting the basic aqueous solution with a water immiscible organic phase comprising an organic solvent and dissolved therein an organic-soluble substituted hydroxyquinoline, whereby the gallium is extracted into the organic phase;
- separating the organic phase from the basic aqueous solution and recovering the gallium values from the organic phase, the improvement which comprises the organic phase further comprising dissolved therein an organic carboxylic acid compound.
Dependencies are inferred from the claim text.