FREMGANGSMAATE TIL ELEKTROLYTISK RENSING AV EN NIKKEL-ELEKTRORAFFINERINGS-ELEKTROLYTT

FREMGANGSMAATE TIL ELEKTROLYTISK RENSING AV EN NIKKEL-ELEKTRORAFFINERINGS-ELEKTROLYTT

The presence of one or more of cobalt, iron, arsenic and lead is most substantially reduced in a nickel-containing electrolyte by an electrochemical process utilizing a high current density at the cathode in an electrolytic cell containing specific quantities of chlorides of alkali metals to form a...

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Bibliographische Detailangaben
Hauptverfasser: BRANDT, BERNARDUS JACOBUS, BORBELY, GYULA JOHN, ILLIS, ALEXANDER
Format: Patent
Sprache:nor
Schlagworte:
APPARATUS THEREFOR
CHEMISTRY
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
METALLURGY
PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS
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Beschreibung
Zusammenfassung:The presence of one or more of cobalt, iron, arsenic and lead is most substantially reduced in a nickel-containing electrolyte by an electrochemical process utilizing a high current density at the cathode in an electrolytic cell containing specific quantities of chlorides of alkali metals to form a fine nickel hydroxide precipitate. In a subsequent time dependent reaction under controlled pH conditions, nickel hydroxide reacts with the electrolyte to form insoluble precipitates of cobalt, iron, arsenic and lead which are removed from the electrolyte by filtration.