| 摘要 |
A process is provided for extracting monovalent thallium and alkali metal values from a liquid medium containing a carboxylic acid having limited solubility in water and containing dissolved trivalent thallium values, monovalent thallium values and, optionally, alkali metal compound, which comprises contacting the carboxylic acid medium with an extractant comprising an acidic aqueous medium having a pH of not greater than about 6 to preferentially extract monovalent thallium and alkali metal values into the aqueous medium, and recovering a raffinate comprising a treated carboxylic acid medium containing trivalent thallium carboxylate and depleted of monovalent thallium and alkali metal values.
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