Synergistic solvent extraction process
AssigneeCommonwealth Scientific and Industrial Research Organisation
InventorsChu Yong Cheng, Mark Daniel Urbani
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Abstract
A process for separating one or more metal ions forming a first group of metal ions such as copper, zinc and ferric ions, from one or more other metal ions forming a second group of metal ions such as cobalt and nickel, comprising: contacting an aqueous solution comprising said first and second groups of metal ions with an organic solution comprising a phosphinic acid and a hydroxyoxime to extract one of said groups of metal ions into the organic phase, and separating the organic and aqueous phases.
Claims20
A process for separating a first group of metal ions, from a second group of metal ions, the first group of metal ions comprising one or more ions selected from the group consisting of copper, zinc, and ferric ions, and the second group of metal ions comprising one or more ions selected from the group consisting of cobalt, nickel, and combinations thereof, the process comprising:
- contacting an aqueous solution comprising said first and second groups of metal ions with an organic solution comprising a phosphinic acid and a hydroxyoxime to extract the first group of metal ions into the organic phase, leaving the second group of metal ions in the aqueous phase, and
- separating the organic and aqueous phases.
Dependencies are inferred from the claim text.