FIELD: production of aluminum. SUBSTANCE: apparatus incorporates housing provided with hoop having inclined and vertical walls and gas collector made up of separate sections, securely fixed to hoop and provided with external wall, suspension and shield. Shield and inclined wall of hoop make up joint with gap filled with alumina. EFFECT: higher operational reliability and minimized burning of anode side surfaces and amount of evolved gases. 3 cl, 2 dwg
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