PROCESS FOR EXTRACTING AND PURIFYING PLATINUM GROUP METALS

PROCESS FOR EXTRACTING AND PURIFYING PLATINUM GROUP METALS

There is described a process for the separation and purification of the platinum group metals from base metal out of acidic aqueous solutions. For this purpose there is used a substituted thiourea of the formula R1R2N-CS-NH-CO-R3 or R1R2N-CS-NH-COOR3 as the precipitation agent. Preferably there are...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SCHLODDER, RAINER, KONIG, KARL-HEINZ, DR, HOLLMANN, DIETER, SCHUSTER, MICHAEL
Format: Patent
Sprache:eng ; ger
Schlagworte:
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
FERROUS OR NON-FERROUS ALLOYS
INORGANIC CHEMISTRY
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:There is described a process for the separation and purification of the platinum group metals from base metal out of acidic aqueous solutions. For this purpose there is used a substituted thiourea of the formula R1R2N-CS-NH-CO-R3 or R1R2N-CS-NH-COOR3 as the precipitation agent. Preferably there are employed N,N-diaklyl-N'-benzoylthiourea wherein R1 and R2 are methyl, n-butyl, or n-hexyl.