FIELD: equipment for aluminium production. SUBSTANCE: method allows to create protective diffusion preventing composition in bottom for preventing filtration of aluminium and metallization of bottom with sodium. Method comprises steps of delivering initial raw material to space "bead-anode" according to next order and with next relation (mass %): alumina - up to 10; calcium fluoride - up to 6; cryolite - up to 25; reusable electrolyte - up to 45, cryolite - up to 6, alumina - the balance; pouring aluminium onto anode projection bottom; delivering cathode components containing metals of II-VIII groups for forming (by action of electric current) multicomponent solid chemical compounds with aluminium until saturation of solid solution. EFFECT: enhanced efficiency of cell, increased useful life period of cell, improved quality of produced aluminium, lowered electric power and labor consumption. 3 cl, 2 dwg, 2 tbl, 1 ex
