A process for recovering lithium from a brine

Details A process for recovering lithium from a brine A process for recovering lithium from a brine

C - Chemistry, Metallurgy

01

D

C01D 15/08 (2006.01) C01D 15/04 (2006.01) C02F 1/52 (2006.01) C02F 1/66 (2006.01)

Patent

CA 2729886

There is disclosed herein a process for recovering lithium from an impure natural or industrial brine, the process comprising adjusting the pH of a feed brine containing lithium to a value of no less than 11.3 and separating the waste solids and a solution containing lithium values. The solution may be further concentrated and treated to obtain lithium carbonate and a lithium chloride solution suitable for obtaining electrolytic grade lithium chloride.

L'invention porte sur un procédé de récupération de lithium à partir d'une saumure impure, naturelle ou industrielle, le procédé comportant l'ajustement du pH d'une saumure d'alimentation contenant du lithium à une valeur non inférieure à 11,3 et la séparation des déchets solides et d'une solution contenant des substances de valeur à base de lithium. La solution peut être davantage concentrée et traitée pour obtenir du carbonate de lithium et une solution de chlorure de lithium appropriée pour l'obtention de chlorure de lithium de qualité électrolytique.

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