Optimising Anode Performance in Albras Potlines

Abstract

Albras has improved its anode performance at pots in terms of noise after anode change, anode current pick up, anode set modifier, anode consumption in cells, and anode quality, aiming to improve the gross and net carbon, following the continuous amperage increase. Optimization of anode change was done testing a new anode set modifier, analyzing the size and duration of the modifier to maintain the stability. Moreover, anode performance was monitored by anode voltage drop, reducing the power energy and improving the current efficiency. Anode consumption was monitored measuring the butt thickness and burn-off rate, looking to optimize the anode life in the cell reducing the anode cost. Anode quality was checked during the weekly audit between carbon and potline assessing the anode parameters, such as crack, and pots parameters, such as quality of the anode cover material.