Process for extracting metal values from aqueous solution

A process for extracting metal values especially zinc values from aqueous solutions of metal salts which comprises contacting the aqueous solution with an organic phase comprising a compound of the formula: I wherein each of R1, R2, R3 and R4, independently, represents an optionally substituted hydr...

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Bibliographische Detailangaben
Hauptverfasser:	CAMPBELL, JOHN, DALTON, RAYMOND F, QUAN, PETER M
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS SEPARATION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A process for extracting metal values especially zinc values from aqueous solutions of metal salts which comprises contacting the aqueous solution with an organic phase comprising a compound of the formula: I wherein each of R1, R2, R3 and R4, independently, represents an optionally substituted hydrocarbyl or hydrocarbyloxy group or R1 and R2 together with the attached phosphorus atom and/or R3 and R4 together with the attached phosphorus atom form a 5- to 8-membered heterocyclic ring.