Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1972-06-28
1977-08-23
Vertiz, O. R.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204112, 75101BE, 423 24, 423139, C72B 1510, C72B 2304
Patent
active
040438821
ABSTRACT:
The present invention relates to a solvent extraction process for selectively recovering copper from an aqueous solution containing copper and nickel and having a pH above about 9. By employing only limited amounts of oxime, sufficient to provide about equivalent exchangeable hydrogen ion therein to latent copper ion of the aqueous stream, copper ion can be extracted in a multistage countercurrent process preferentially to nickel or cobalt. Hydrogen ion of the oxime molecule exchanges with copper ion in the aqueous solution in accordance with the equation:
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patent: 3455680 (1969-07-01), Ashbrook et al.
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patent: 3697400 (1972-10-01), Pang
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Morin Edmond A.
Peterson Hal D.
Skarbo Roald R.
Hearn Brian E.
Kennecott Copper Corporation
Lorusso Anthony M.
Sniado John L.
Vertiz O. R.
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