The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 1989
Filed:
Sep. 21, 1988
Jean-Louis Sabot, Maisons Laffitte, FR;
Richard Fitoussi, Saint-Mande, FR;
Rhone-Poulenc Chimie, Courbevoie, FR;
Abstract
Gallium values are separated and recovered from strongly basic aqueous solutions thereof, e.g., Bayer process aluminate liquors, by (i) contacting such basic solution with an organic phase comprising an organic extractant and an organic solvent and liquid/liquid extracting gallium values therefrom, and permitting phase separation into an aqueous phase and an organic phase containing said extracted gallium values; (ii) contacting said organic phase with a solution of an acid halide in part comprising acidic phase recycled from the below stage (iv), after the selective extraction thereof, and liquid/liquid extracting gallium values therefrom, and permitting phase separation into a second organic phase and an acid phase containing said extracted gallium values; (iii) adjusting the halide ion concentration of the acidic gallium phase; (iv) selectively extracting gallium values from said acidic gallium phase; and (v) recovering such selectively extracted gallium values.