Mathematical Modelling of Aluminum Reduction Cell Potshell Deformation

  • Marc Dupuis


One of the key components of an aluminum reduction cell design is the potshell design. The potshell must be designed in such a way that it will not deform excessively in operation and will remain as much as possible in elastic deformation mode. Yet, over-designed potshell are very costly. So, it is important to achieve a design where all sections are getting their fair share of the total load and are being charged close to their elastic limit.

It is obviously impossible to achieve such an optimal potshell design without extensive use of mathematical modeling tools. Three such tools are presented here in order of complexity namely the “empty shell”, the “almost empty shell” and the “half empty shell” ANSYS® based thermo-mechanical models. Results are presented for each model, both in elastic and plastic modes, as well as required CPU times.


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  1. 1.
    G. V. Asadi, M. Dupuis and I. Tabsh, “Shell Design Technique Considering the Sodium Swelling Phenomena of Carbon Cathode Blocks”, in Proceedings of the 32nd Conference of Metallurgists, CIM, (1993), 125–130.Google Scholar
  2. 2.
    M. Dupuis, V. Bojarevics and J. Freibergs. “Demonstration Thermo-Electric and MHD Mathematical Models of a 500 kA Al Electrolysis cell”, in Proceedings of the 42nd Conference on Light Metals, CIM, (2003), 3–20.Google Scholar
  3. 3.
    M. B. Rapoport and V. N. Samoilenko, “Deformation of Cathode Blocks in Aluminium Reduction Cells during Process of Electrolysis”, in TsvetnyeMetally, (1957), vol 30, 44–51.Google Scholar
  4. 4.
    E. W. Dewing, “Longitudinal Stress in Carbon Lining Blocks Due to Sodium Penetration”, in Proceedings of TMS Light Metals, (1974), vol 3, 879–887.Google Scholar
  5. 5.
    C. M. Read, A. M. Kobos, M. Dupuis, G. V. Asadi and K. P. Misegades, “Modelling of Aluminium Production Processes with CRAY supercomputers”, in Supercomputing Symposium ‘90, (1990).Google Scholar
  6. 6.
    M. Dupuis, G. V. Asadi, C. M. Read, A. M. Kobos and A. Jakubowski. “Cathode Shell Stress Modeling”, in TMS Light Metals, (1991), 427–430.Google Scholar
  7. 7.
    M. Dupuis and D. Richard, “Study of the Thermally-Induced Shell Deformation of High Amperage Hall-Héroult Cells”, in Proceedings of COM, (2005), 35–47.Google Scholar
  8. 8.
    M. Dupuis, G. V. Asadi, C. M. Read and I. Tabsh, “Hall-Héroult Cell, Cathode Modelling; Impact of Sodium Swelling on the Loading Forces”, in Proceedings of the 31st Conference of Metallurgists, CIM, (1992), 115–130.Google Scholar
  9. 9.
    M. Dupuis, V. Bojarevics and D. Richard, “Impact of the Vertical Potshell Deformation on the MHD Cell Stability Behavior of a 500 KA Aluminum Electrolysis Cell”, in TMS Light Metals, (2008), 409–412.Google Scholar
  10. 10.
    G. D’Amours, M. Fafard, A. Gakwaya and A. Mirchi. “Multi-Axial Mechanical Behavior of the Carbon Cathode: Understanding, Modeling and Identification”, in TMS Light Metals, (2003), 633–639.Google Scholar
  11. 11.
    D. Richard, G. D’Amours, M. Fafard, and M. Désilets. “Development and Validation of a Thermo-Chemo-Mechanical Model of the Baking of Ramming Paste”, in TMS Light Metals, (2005), 733–738.Google Scholar

Copyright information

© The Minerals, Metals & Materials Society 2016

Authors and Affiliations

  • Marc Dupuis
    • 1
  1. 1.GéniSim Inc.JonquièreCanada

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