Compositions useful in process for extraction of metal values from acidic solutions
AssigneeGeneral Mills Chemicals, Inc.
InventorsKenneth D. MacKay, Edgar R. Rogier
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Abstract
Process of extracting metals using organic solvent solutions of salts of hydrogen ion exchange agents and quaternary ammonium compounds. Organic solvent solutions of such quaternary ammonium salts of hydrogen ion exchange agents.
Claims4
A composition consisting essentially of an essentially water-immiscible organic solvent containing dissolved therein at least about 2% by weight of a quaternary ammonium salt of a hydrogen ion exchange agent wherein the salt has the formula QL where Q is the quaternary ammonium cation of the formula ##STR10## where R.sub.1 is a hydrocarbon radical of 6 to 24 carbon atoms and R.sub.2, R.sub.3 and R.sub.4 are hydrocarbon radicals of 1 to 24 carbon atoms and L is the deprotonated moiety of anion of the hydrogen ion exchange reagent, L being derived from reagents selected from the group consisting of
- (a) an .alpha.-hydroxy oxime
- (b) a 2-hydroxybenzophenoxime
- (c) a .beta.diketone
- (d) a hydroxy containing benzoxazole and
- (e) a substituted 8-hydroxyquinoline.
Dependencies are inferred from the claim text.