Modeling of Energy Saving by using Cathode Design and Inserts

摘要

The use of modified cathode shape and inserts in the cathodeallow drastically redistributing the current density in thealuminium liquid pool. As a result both the cathode voltagedrop and the anode to cathode voltage drop can besignificantly decreased. Electrical modeling can easilyexplain the energy savings in the cathode. Magnetohydrodynamicmodeling shows why and how specificenergy can be saved in the anode to cathode distance. Theenergy saving inside the cell depends on the cell initialdesign but may exceed 1 kWh/kg Al.