Abstract
Reduction of cell voltage through redesign of the stub holes of cast iron rodded anodes is an attractive idea. In practice, stub hole optimisation is not an easy task and in situ trials may yield what seem to be counter-intuitive results.
A closer examination reveals a complex behaviour of the steel stub - cast iron - carbon joint. It was shown in previous work [1] to be a non-linear thermal-electrical-mechanical coupled system. Minimisation of the stub-to-carbon voltage drop is a balancing act between contact surface area and electrical contact resistance.
To gain insights into the merits of different designs, a finite element demonstration model was built using the in-house code FESh++. Alternative configurations were studied. Potential industrial applications are discussed.
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D. Richard., M. Fafard, R. Lacroix, P. Cléry, & Y. Maltais, 2000. “Thermo-electro-mechanical modeling of the contact between steel and carbon cylinders using the finite element method”. In Proc. TMS Light Metals, 523–528.
R.W. Peterson, 1976. “Temperature and voltage measurements in Hall cell anodes”, In Proc. TMS Light Metals 1, p. 365–382.
R.W. Peterson, “Studies of stub to carbon voltage”, 1978. In Proc. TMS Light Metals 1, p. 367-.378
D.G. Brooks & V.L Bullough, 1984. “Factors in the design of reduction cell anodes”, In Proc. TMS Light Metals, p. 961–976.
R.W. Peterson, M.D. Ohlswager & G.E. Goeres, 1989. “Anode cast iron thickness optimization”, In Proc. TMS Light Metals, p. 499–503.
T.X. Hou, Q. Jiao, E. Chin, W. Crowell & C. Celik, 1995. “A numerical model for improving anode stub design in aluminum smelting process”, In Proc. TMS Light Metals, p. 755–761.
D. Richard., M. Fafard, R. Lacroix, P. Cléry, & Y. Maltais, 2001. “Aluminum reduction cell anode stub hole design using weakly coupled thermo-electro-mechanical finite element models”. Finite Elements in Analysis & Design, 37 (4), 287–304.
D. Richard., M. Fafard, R. Lacroix, P. Cléry, & Y. Maltais, 2003. “Carbon to cast iron electrical contact resistance constitutive model for finite element analysis”. Journal of Material Processing Technology, 132 (1–3), 119–131.
R.Holm, 1967. “Electric Contacts, Theory and Applications” 4th edition, Springer-Verlag, New York
J.A. Greenwood & J.B.P. Williamson, 1966. “Constriction resistance and the real area of contact”, Brit.J.Appl.Phys 17 (1966), p. 1621–1632.
J.A. Greenwood & J.B.P. Williamson, 1966. “Contact of nominally flat surfaces”, In Proc. Royal Society A295, p. 300–319.
M. Sørlie & H. Gran, 1992. “Cathode collector bar-to-carbon contact resistance”, In Proc. TMS Light Metals, 779–787.
P. Goulet, 2004. “ Modélisation du comportement thermo-électro-mécanique des interfaces de contact d'une cuve de Hall-Héroult”, Ph.D. Thesis, Université Laval, Québec (Québec), Canada.
M. Désilets, D. Marceau & M. Fafard, 2003. “START-Cuve: Thermo-electro-mechanical Transient Simulation Applied to Electrical Preheating of a Hall-Héroult Cell”, in Proc. TMS Light Metals, 247–254.
G. D'Amours, M. Fafard, A. Gakwaya & A. Mirchi, 2003. “Multi-Axial Mechanical Behavior of the Carbon Cathode: Understanding, Modeling and Identification”, in Proc. TMS Light Metals, 633–639.
H. Fortin, M. Fafard, N. Kandev & P. Goulet, 2009. “FEM Analysis of the Voltage Drop Induced by the Deterioration of the Anode Stubs”, in Proc. TMS Light Metals, To be published.
M. Dupuis, 2000. “Thermo-Electric Design of a 400 kA Cell: A Tutoriar”, in Proceedings of TMS Light Metals, p. 297–302.
J.R. Katus editor, 1959. Properties of Cast Iron at Elevated Temperatures, ASTM Special Publications, no.448.
S.F. Ward editor, 1955. Elevated-Temperature Properties of Carbon Steel, ASTM Special Publications, no. 180.
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Richard, D., Goulet, P., Trempe, O., Dupuis, M., Fafard, M. (2016). Challenges in Stub Hole Optimisation of Cast Iron Rodded Anodes. In: Tomsett, A., Johnson, J. (eds) Essential Readings in Light Metals. Springer, Cham. https://doi.org/10.1007/978-3-319-48200-2_73
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DOI: https://doi.org/10.1007/978-3-319-48200-2_73
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