New 32-H Metal Tapping Cycle Implementation at ALBRAS

A reduced tapping cycleTapping cycle was proposed as an essential element to improve ALBRASALBRAS current efficiencyCurrent efficiency. Previously, metal tappingTapping was done every 48 h. A 32-h metal tapping cycleTapping cycle was evaluated, aiming to reduce liquid variation in the cellsCell and improve current efficiencyCurrent efficiency. The trial, together with improvements in operationOperation, proved a 2.03% CE increase, supported by better heat balanceHeat balance figures, reduced ledgeLedge variation, lower noise, fewer anode effectsAnode effect, a lower voltage per cellCell and ironIron content. Less ironIron also makes it possible to increase the production volume of PFA and P0610 alloysAlloys. This paper discusses the test development with respect to process and operational structure and the achieved results, which have guided ALBRASALBRAS discussions for its optimum operating mode for the coming years.