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US 2013/0247718 A1Published application
Methods Of Metal Extraction Using Oximes
AssigneeCognis IP Management GmbH
InventorsMichael Virnig, Jack Bender, Nathan C. Emmerich
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Abstract
Provided are methods method of recovering metal from an aqueous solution, the method comprising contacting an aqueous solution containing at least two metals selected from molybdenum, cobalt, nickel, zinc and iron with an organic solvent and an oxime-containing reagent composition at a predetermined pH, the predetermined pH selected to provide a high first metal extraction and a low second metal extraction; and separating the first metal from the solution.
Claims11
A method of recovering metal from an aqueous solution, the method comprising:
- contacting an aqueous solution containing at least two metals selected from molybdenum, cobalt, nickel, zinc and iron with an organic solvent and an oxime-containing reagent composition comprising an oxime having a structure represented by:
- wherein R1 is hydrogen or CH3, R3 is a C8-12 alkyl group, R2 and R4 are hydrogen, R5 is a methyl group, at a predetermined pH, the predetermined pH selected to provide a high first metal extraction and a low second metal extraction;
- and
- separating the first metal from the solution.
1 more element
Dependencies are inferred from the claim text.