METHOD OF PRETREATMENT OF ALUMINIUM-CONTAINING ORES

1341609 Wet grinding of alumina-containing ores TATABANYAI SZENBANYAK 14 May 1971 [20 May 1970] 14901/71 Heading C1A As-mined or coarsely crushed alumina-containing ore (e.g. bauxite) is treated, prior to alkaline extraction of the alumina, with an aqueous alkaline leaching liquor for up to 12 hours...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	MIKLOSH YURMOSI,HU, YANOSH BANKHIDI,HU, KATALIN SHABO,HU, FERENTS LAZAR,HU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS FERROUS OR NON-FERROUS ALLOYS INORGANIC CHEMISTRY METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	1341609 Wet grinding of alumina-containing ores TATABANYAI SZENBANYAK 14 May 1971 [20 May 1970] 14901/71 Heading C1A As-mined or coarsely crushed alumina-containing ore (e.g. bauxite) is treated, prior to alkaline extraction of the alumina, with an aqueous alkaline leaching liquor for up to 12 hours (e.g. 0À5 to 2À5 hours) to soften and loosen its mineral structure and is then, with additional leaching liquor if necessary, reduced to a slurry of particle size 2 mm. or less, preferably using a grinding-conveyer pump. The leaching liquor is preferably at 50 to 90 C. and the ore may be crushed to a particle size of 20 to 30 mm. before the grinding step.