FIELD: non-ferrous metallurgy. SUBSTANCE: anode unit of aluminum electrolyzer with self-baking anode has two coaxial tubes vertically attached to counterforts. Value of dipping of external tube into baked part of anode amounts to 0.037-0.23 height of baked part. Difference of levels of lower ends of coaxial tubes is 0.036-0.14 height of baked part of anode. External tube is fitted with heat removing bushing. Lower boundary of bushing does not reach baked part of anode and upper one communicates with atmosphere. Height of lining layer of vertical conduit amounts to 0.7-0.9 height of baked part of anode with level of upper boundary in interval between lower boundaries of coaxial tubes. EFFECT: increased productivity and prolonged service life of electrolyzer, reduced energy and fluorine salt consumption, diminished labor input. 4 cl, 1 dwg, 1 tbl
