Resin-in-leach process to recover nickel and/or cobalt in...

C - Chemistry – Metallurgy – 22 – B

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C22B 23/00 (2006.01) C22B 3/06 (2006.01) C22B 3/42 (2006.01)

Patent

CA 2697777

A hydrometallurgical resin-in-leach (RIL) process for directly recovering nickel and/or cobalt. Simultaneous pulp leaching by adding an acid or base, dissolves the metals of interest with adsorption of the metals rendered soluble in on ionic exchange resin. Following elution of the changed resin, purification of nickel and cobalt present in the eluate can be recovered by conventional methods, such as precipitation, extraction by solvents and membranes. The regenerated resin is recirculated for further use.

L'invention concerne un processus hydrométallurgique de résine en lixiviat visant à récupérer directement du nickel et/ou du cobalt. La lixiviation simultanée de la pulpe par ajout d'un acide ou d'une base dissout les métaux d'intérêt par adsorption des métaux rendus solubles dans une résine échange d'ions. Après élution de la résine modifiée, le nickel et le cobalt purifiés présents dans l'éluat peuvent être récupérés par des méthodes traditionnelles, telles que la précipitation, l'extraction par solvants et membranes. On fait ensuite recirculer la résine régénérée pour une utilisation ultérieure.

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