Back to results
US 4,432,951 AGranted
Process for separating germanium from an aqueous solution
AssigneeMetallurgie Hoboken-Overpelt
InventorsAchille De Schepper, Marc Coussement, Antoine Van Peteghem
Life of this patent
Estimating the term…
Abstract
Germanium is separated from an aqueous solution by means of a substituted 8-hydroxyquinoline extractant. Re-extraction of germanium from the extractant is carried out above 40.degree. C. and with an organic phase: aqueous phase volume ratio less than 1, whereby obtaining a high re-extraction yield.
Claims11
A process for separating germanium from a germanium-containing aqueous acid solution, comprising the steps of
- (a) contacting said solution with an organic liquid including a substituted 8-hydroxyquinoline, thereby producing a germanium-loaded organic phase and an aqueous phase depleted in germanium;
- (b) separating said germanium-loaded organic phase from said aqueous phase depleted in germanium,
- (c) contacting at a temperature above 40.degree. C. said germanium-loaded organic phase with an aqueous basic solution, the organic phase:
- aqueous phase volume ratio being less than 1, thereby producing an organic phase depleted in germanium and a germanium-loaded basic aqueous phase;
- and
- (d) separating at a temperature above 40.degree. C. said organic phase depleted in germanium from said germanium-loaded basic aqueous phase.
3 more elements
Dependencies are inferred from the claim text.