Process for extraction of metals

C - Chemistry – Metallurgy – 22 – B

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C22B 3/26 (2006.01) C21B 15/00 (2006.01) C22B 3/30 (2006.01) C22B 3/32 (2006.01) C22B 3/38 (2006.01) C22B 26/00 (2006.01) C22B 26/22 (2006.01)

Patent

CA 2353225

A process for the extraction of metals from an aqueous solution of metals in the form of their metal ions. The preparation and use of an efficient organic extractant and also the recovery from the organic extractant of the metal ions. A process for preparing an extractant solution where the extractant solution is a solution of a calcium ion or magnesium ion loaded extractant in a water- immiscible organic solvent, and where the extractant solution is suitable for extracting metal ions from an aqueous solution containing the metal ions, including mixing an aqueous solution of calcium ions or magnesium ions with a basic calcium salt or a basic magnesium salt and with a solution of an organic extractant in a water-immiscible organic solvent to form the extractant solution, and then separating the extractant solution from the aqueous solution.

Procédé pour extraire les métaux d'une solution aqueuse de métaux sous la forme d'ions métalliques. Préparation et utilisation d'un agent d'extraction organique efficace ainsi que récupération de cet agent d'extraction en mélange avec les ions métalliques. Procédé pour préparer une solution d'extraction, soit une solution d'un agent d'extraction chargé d'ions calcium ou d'ions magnésium dans un solvant organique non miscible avec l'eau; cette solution convient pour extraire les ions métalliques d'une solution aqueuse renfermant ces ions. Le procédé comprend le mélange d'une solution aqueuse d'ions calcium ou d'ions magnésium avec un sel de calcium basique ou un sel de magnésium basique et avec une solution d'un agent d'extraction organique dans un solvant organique non miscible avec l'eau, afin d'obtenir la solution d'extraction, puis la séparation de la solution d'extraction et de la solution aqueuse.

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