Aluminium recovered as its trichloride - by treatment of ground calcined shales with chlorine contg. gases

Aluminium recovered as its trichloride - by treatment of ground calcined shales with chlorine contg. gases

Shale contg. is not 30 wt.% ash, of which is not 20% is Al calculated on basis of Al2O3, is ground to e.g. 0.01-0.02 mm, and calcined with simultaneous coking in a reducing atmos. at e.g. 700-800 degrees C. Resulting solid material is treated with gas contg. 1 pt. CO and 1-3 pts. Cl at 700-1000 degr...

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Bibliographische Detailangaben
Hauptverfasser: NEMECZ, ERNO, UJHIDY, AUREL, SZEPVOLGYI, JANOS, KAPOLYI, LASZLO, SZEKELY, TAMAS, BORLAI, OSZKAR, POLINSZKY, KAROLY
Format: Patent
Sprache:eng ; ger
Schlagworte:
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
INORGANIC CHEMISTRY
METALLURGY
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Beschreibung
Zusammenfassung:Shale contg. is not 30 wt.% ash, of which is not 20% is Al calculated on basis of Al2O3, is ground to e.g. 0.01-0.02 mm, and calcined with simultaneous coking in a reducing atmos. at e.g. 700-800 degrees C. Resulting solid material is treated with gas contg. 1 pt. CO and 1-3 pts. Cl at 700-1000 degrees C during e.g. 90 mins. AlCl is recovered from gas phase and corresponds e.g. to 54% conversion of Al content of feed. Ash content of shale is pref. silica clay or esp. calcium pyrites. Shale is esp. "Konststein.".