GEWINNUNG VON CR TIEF 2 O TIEF 3 AUS EINER CHROMHALTIGEN LOESUNG

The present invention concerns a method for the recovery of high purity Cr2O3 from a Na2CrO4 or Na2Cr2O7 solution by producing (NH4)2CrO4 by solvent extraction using an organic solution of a tertiary amine followed by reaction of the organic phase with NH4OH evaporating the aqueous (NH4)2CrO4 and ig...

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Bibliographische Detailangaben
Hauptverfasser:	DE ATLEY,WILLIAM BRANTNER, JOSEPH MALACARNE,ORESTE, SOLOMON FOX,JOSEPH, JACK KAGETSU,TADASHI
Format:	Patent
Sprache:	ger
Schlagworte:	ADHESIVES BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F DYES ELECTRICITY INORGANIC CHEMISTRY METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES PREPARATION OF CARBON BLACK PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:	The present invention concerns a method for the recovery of high purity Cr2O3 from a Na2CrO4 or Na2Cr2O7 solution by producing (NH4)2CrO4 by solvent extraction using an organic solution of a tertiary amine followed by reaction of the organic phase with NH4OH evaporating the aqueous (NH4)2CrO4 and igniting the resulting solids to provide high purity Cr2O3.