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US 4,666,686 AGranted
Process for the fluid-fluid extraction of gallium, germanium or indium from liquid solutions
AssigneePreussag Aktiengesellschaft Metall
InventorsWolfang Krajewski, Kunibert Hanusch
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Abstract
A process for the fluid-fluid extraction of gallium, germanium or indium from acid or base hydrous solutions, in which a mixture of at least two hydroxyquinolines in various quantities is employed, is described.
Claims20
A process for the fluid-fluid extraction of gallium, germanium or indium from an acid or base hydrous solution, comprising the steps of:
- (a) contacting said solution with an organic liguid including a mixture that contains at least 7-alkenyl-8-hydroxyquinoline having the trade name Kelex 100 and a 7-alkenyl-8-hydroxyquinoline having the trade name LIX-26 thereby producing a gallium, germanium or indium-loaded organic phase and an aqueous phase depleted in gallium, germanium or indium;
- (b) separating said gallium, germanium or indium-loaded organic phase from said aqueous phase depleted in gallium, germanium or indium;
- (c) contacting said organic phase with an alkaline hydrous solution thereby producing a gallium, germanium or idium-loaded alkaline hydrous solution;
- and,
- (d) separating the gallium, germanium or indium compound from said alkaline hydrous solution.
2 more elements
Dependencies are inferred from the claim text.