Solvent extraction process for separating cobalt and/or nickel from impurities in leach solutions
AssigneeCommonwealth Scientific & Indistrial Research Organisation
InventorsChu Yong Cheng, Mark Daniel Urbani
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Abstract
A process for the separation of nickel, cobalt or both from impurity elements selected from one or more of calcium, magnesium, manganese and chloride contained in a leach solution, the process comprising the step of subjecting the leach solution to solvent extraction using a carboxylic acid (such as Versatic 10), a hydroxyoxime such as LIX 63, a kinetic accelerator such as TBP, and optionally a stabilizer.
Claims35
A process for the separation of nickel, cobalt or both from impurity elements selected from one or more of calcium, magnesium, manganese and chloride contained in a leach solution, the process comprising the step of contacting the leach solution with a solvent extraction solution comprising a carboxylic acid, a chelating aliphatic hydroxyoxime and a kinetic accelerator, wherein the solvent extraction step effects extraction of nickel, cobalt, or both into an organic phase, to the extent that these elements are present, with calcium, magnesium, manganese, and chloride being rejected to an aqueous phase.
Dependencies are inferred from the claim text.