FIELD: aluminum production. SUBSTANCE: gear incorporates elements that localize gases manufactured in the form of sleeves mounted at points of installation of rods in anode. Sleeves are made fast to anode enclosure, are interconnected and linked by sucking-off gas conduits to gas exhaust system of electrolysis shop. Each sleeve is fitted with sealing semi-rings and separable shutter equipped with locators and spring. EFFECT: gear makes it possible to use gas cleaning structure installed in electrolysis shop. 2 cl, 4 dwg
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