A method and a device for recovering metals

C - Chemistry – Metallurgy – 25 – C

Patent

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C25C 1/00 (2006.01) C25C 7/08 (2006.01)

Patent

CA 2294373

A method and a device for recovering metals from a metal-containing flow, wherein: a) the metal-containing flow and a solvent are supplied to a dissolving unit, whereby a metal-containing solution is formed; b) the metal-containing solution is then supplied to a concentration unit; c) the metal-containing solution is separated in the concentration unit into a small-volume flow containing a high concentration of metal salts and/or metal hydroxides, and a large-volume flow containing a low concentration of metal salts and/or metal hydroxides; d) the small-volume flow containing a high concentration of metal salts and/or metal hydroxides is supplied to an electrochemical unit; and e) the small-volume flow containing a high concentration of metal salts and/or metal hydroxides is separated in said electrochemical unit into a flow containing one or more metals, and a flow containing a low concentration of metal salts and/or metal hydroxides.

L'invention concerne un procédé et un dispositif de récupération de métaux à partir d'un flux contenant des métaux, procédé dans lequel; a) le flux contenant des métaux et un solvant sont acheminés vers une unité de dissolution, ce qui entraîne la formation d'une solution contenant des métaux, b) cette solution est ensuite acheminée vers une unité de concentration; c) cette solution est séparée dans l'unité de concentration pour former un flux de petit volume à forte teneur en sels et/ou hydroxydes métalliques et un flux de grand volume à faible teneur en sels et/ou hydroxydes métalliques; d) le flux de petit volume présentant une forte teneur en sels et/ou hydroxydes métalliques est acheminé vers une unité électrochimique; et e) le flux de petit volume à forte teneur en sels et/ou hydroxydes métalliques est séparé dans ladite unité électrochimique pour former un flux contenant un ou plusieurs métaux et un flux à faible teneur en sels et/ou hydroxydes métalliques.

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