Abstract
The electromagnetic field and the gas bubbles generated beneath anodes in aluminum reduction cells have an important role in the fluctuation of the bath/metal interface. A coupled mathematical model has been developed to investigate the electromagnetic field and the multiphase flow in the aluminum reduction cell with innovative cathode protrusion. As for the electromagnetic field, the finite element method was employed. A transient inhomogeneous multiphase model, the finite volume method, was employed to study the multiphase flow. The results indicated that the electromagnetic field distribution was changed by the innovative cathode protrusion. The electromagnetic force decreased as a result of the optimization of the magnetic field. In addition, the deformation of the meta/bath interface was suppressed significantly, which is beneficial to the reduction of the voltage drop. The innovative cathode protrusion had little effect on the motion of the gas bubbles.
Published Version
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