Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1977-01-03
1979-03-06
Hearn, Brian
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
423 24, 423100, 423139, 423DIG14, C25C 112
Patent
active
041429524
ABSTRACT:
A process for extracting metal values from aqueous solutions of metal salts which comprises the steps of contacting the aqueous solution with a solution in a water-immiscible organic solvent of one or more o-hydroxyaryloximes containing at least 3 aliphatic or alicyclic carbon atoms and which are strong metal extractants and one or more alkylphenols optionally containing one chlorine atom or one cyano group, separating from the aqueous phase the solvent phase containing metal in the form of a complex with the o-hydroxyaryloxime contacting the solvent phase with an aqueous mineral acid, and separating the solvent phase from the aqueous phase containing metal in the form of a salt with the mineral acid.
REFERENCES:
patent: 3655347 (1972-04-01), Mattison et al.
patent: 3725046 (1973-04-01), Hartlage et al.
patent: 4020105 (1977-04-01), Ackerley et al.
patent: 4020106 (1977-04-01), Ackerley et al.
patent: 4026988 (1977-05-01), Wells et al.
patent: 4029704 (1977-06-01), Anderson
"Solvent Extraction in Copper Metallurgy", Flett Transactions vol. 83, Mar. 1974, Inst. Mining & Metallurgy.
Hearn Brian
Imperial Chemical Industries Limited
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