Processes for the recovery of copper from aqueous solutions containing nitrate ions

Processes for the recovery of copper from aqueous solutions containing nitrate ions

A process for the recovery of copper from an aqueous phase containing nitrate ions, in which the aqueous phase is contacted with a solution of an oxime extractant in a water-immiscible organic solvent, which comprises using at least one of the following process variants:I) reducing the acidity of th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HEIN HANS C, MATTISON PHILLIP L, VIRNIG MICHAEL J
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:A process for the recovery of copper from an aqueous phase containing nitrate ions, in which the aqueous phase is contacted with a solution of an oxime extractant in a water-immiscible organic solvent, which comprises using at least one of the following process variants:I) reducing the acidity of the aqueous phase prior to contact with the organic solution; andII) reducing the electromotive force in the aqueous phase prior to contact with the organic solution.