FIELD: non-ferrous metallurgy, winning of aluminum by electrolysis. SUBSTANCE: technical result of invention consists in increased efficiency of apparatus to collect and remove gases from electrolyzers with one-way gas suction with their lateral arrangement in body, in provision for application of optimal designs of system and bus arrangement. Gear includes beam-collector with vertical walls, upper and lower rigidity belts and ducts to collect and remove gases with suction windows. Vertical walls of beam-collector are double walls intended to form two ducts to collect and remove gases located in upper part of beam- collector, Limiters forming suction slot of constant width and variable height are installed with inclination in each duct. Height of ducts grows towards butt of beam- collector connected to gas suction system. EFFECT: increased efficiency of apparatus. 2 dwg
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