PROCESS FOR BRIGHTENING LIQUIDES OF BAYER-PROCESS

PROCESS FOR BRIGHTENING LIQUIDES OF BAYER-PROCESS

PCT No. PCT/GB86/00417 Sec. 371 Date Mar. 25, 1987 Sec. 102(e) Date Mar. 25, 1987 PCT Filed Jul. 17, 1986 PCT Pub. No. WO87/00825 PCT Pub. Date Feb. 12, 1987.The clarification of a sodium aluminate liquor in the Bayer Process, especially the liquor obtained by Kelly filter filtration of the supernat...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: FIELD,JOHN,GB, MOODY,GILLIAN M,GB, HUNTER,TREVOR K.,GB
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
INORGANIC CHEMISTRY
METALLURGY
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:PCT No. PCT/GB86/00417 Sec. 371 Date Mar. 25, 1987 Sec. 102(e) Date Mar. 25, 1987 PCT Filed Jul. 17, 1986 PCT Pub. No. WO87/00825 PCT Pub. Date Feb. 12, 1987.The clarification of a sodium aluminate liquor in the Bayer Process, especially the liquor obtained by Kelly filter filtration of the supernatant from the primary settling stage, is improved by flocculation with a polymer of the formula CH2=C(R1)CONHR2NR3R4 wherein R1 is hydrogen or methyl, R2 is straight or branched chain C2-8 alkylene having at least 2 carbon atoms in the backbone and R3 and R4 are independently selected from C1-4 alkyl.