C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/28 (2006.01)
Patent
CA 2436111
A method for regenerating an amine extractant used for recovery of metals involves contacting a liquid organic phase containing an amine complexed with one or more metals with an aqueous solution substantially free of chloride ions to strip the one or more metals from the organic phase. The stripped organic phase is then contacted with a solution of hydrochloric acid to regenerate the amine extractant which can then be recycled in a production process.
L'invention concerne une méthode de regénération d'un agent d'extraction amine pour le recouvrement des méthodes. La méthode consiste à mettre en contact une phase organique liquide contenant un amine complexé avec un ou plusieurs métaux avec une solution aqueuse sensiblement libre d'ions de chlorure pour extraire un ou plusieurs métaux de la phase organique. La phase organique extraite est ensuite mise en contact avec une solution d'acide hydrochlorique pour regénérer l'extractant d'amine, qui peut ensuite être recyclé dans un processus de production.
Goro Nickel S.a.
Smart & Biggar
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