Abstract
A software application based on the full MHD model of the aluminium electrolytic production cell is used to predict the liquid metal surface instability in a commercial Trimet operated potline. The results are compared with the electric current distribution variation in time over the anodes obtained from the measurement of magnetic fields by wireless sensors. The model incorporating full 3d busbar configuration predicts a critical instability excitation frequency 0.0259 Hz, which compares to the measured frequency of 0.0254 Hz. The mathematical software permits to analyse the sensitivity to the pot individual features like ACD, anode loads, ledge shape, bottom wear and busbar irregularities. The ability to monitor continuously the electric current distribution to high accuracy helps to control disturbances and to visualise the cell interior with the help of this numerical tool.
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Bojarevics, V., Evans, J.W. (2015). Mathematical Modelling of Hall-Héroult Pot Instability and Verification by Measurements of Anode Current Distribution. In: Hyland, M. (eds) Light Metals 2015. Springer, Cham. https://doi.org/10.1007/978-3-319-48248-4_132
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DOI: https://doi.org/10.1007/978-3-319-48248-4_132
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48610-9
Online ISBN: 978-3-319-48248-4
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