CATHODE DEVICE FOR ALUMINIUM ELECTROLYTIC CELL WITH EMBOSSED HEARTH Russian patent published in 2013 - IPC C25C3/08 

FIELD: electrical engineering.

SUBSTANCE: cathode device of an aluminium electrolytic cell with an embossed hearth contains a lined cathode shell ad a hearth composed of higher bottom blocks with projections and lower bottom blocks. The lower bottom blocks are installed at the cathode device hearth butt ends. The lower bottom blocks alternate with higher bottom blocks with projections or are installed in the projection centre of the electrolytic cell anode array, with at least two higher bottom blocks with projections, alternating with lower bottom blocks, installed at the both ends of the electrolytic cell anode array. The bottom block projection height is equal to 0.1÷0.6 of that of the smaller bottom block. The top parts of higher bottom blocks have level edges. The bottom blocks projections are made of a refractory non-carbon material, resistant to hot melt effect.

EFFECT: reduction of hot melt circulation rate and decrease of metal slant due to projecting barriers in the metal layer; decrease of heat and mass transfer inside the aluminium layer which reduces loss of heat from the electrolytic cell surface and enables work at a lower voltage.

4 cl, 5 dwg