DEVICE FOR COLLECTING AND REMOVING GASES IN AN ALUMINUM REDUCTION CELL

The invention relates to the production of aluminum in electrolysis cells with baked anodes. A device comprises a system of gas ducts and gas-collecting caps. Each of the caps is connected by a first channel to a horizontal gas duct so as to form a main gas removal circuit, and is connected by a sec...

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Bibliographische Detailangaben
Hauptverfasser:	ZHERDEV, ALEKSEJ SERGEEVICH, TRET'YAKOV, YAROSLAV ALEKSANDROVICH, SHADRIN, VALERIJ GEORGIEVICH
Format:	Patent
Sprache:	eng ; fre
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 invention relates to the production of aluminum in electrolysis cells with baked anodes. A device comprises a system of gas ducts and gas-collecting caps. Each of the caps is connected by a first channel to a horizontal gas duct so as to form a main gas removal circuit, and is connected by a second channel to an additional gas duct so as to form an additional gas removal circuit. The height of each subsequent channel of the main loop is increased by 16-24% of the height of the preceding channel, and the height of each subsequent channel of the additional loop is increased by 24-26% of the height of the preceding channel. Separator plates are mounted inside the caps. The length of each subsequent plate is reduced with respect to the preceding by 25-35%. The technical effect is to reduce the volumes of gases removed from the electrolysis cell, and to maintain gas removal efficiency.