Summary
A large number of carbon plants, which produce anodes for the electrolytic production of aluminium are today more than 15 years old. The result is that some of the equipment has reached the end of its service life.
At the bake furnace the service life can be prolonged with partial repairs. With increasing furnace life, it becomes more and more difficult to find a correct connection between old and new furnace elements both as regards tightness and as regards possibility for thermal expansion. By-pass air penetration leads to a drop in efficiency. Uncontrollable forces lead to a slow self-destruction of the furnace.
A furnace modernization is described, where a total revision of the refractory part was realized with a production loss of only A months. The latest know-how regarding furnace construction was taken into account in this revision. At the same time the capacity was increased by 45%. Furnaces revised in this way allow an economic production of anodes of high quality.
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References
B.J. Racunas, L.L. Young and W.L. Proctor “Energy Savings in Alcoa Carbon Baking Furnaces” Aluminium Assoc. Aluminium Industry Energy Conservation Workshop VI (Proc. Conf.), Washington D.C., 9 – 10 Nov. 1981, 129 – 134
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© 2016 The Minerals, Metals & Materials Society
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Keller, F. (2016). Strategies for the Revision of Bake Furnaces. In: Tomsett, A., Johnson, J. (eds) Essential Readings in Light Metals. Springer, Cham. https://doi.org/10.1007/978-3-319-48200-2_66
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DOI: https://doi.org/10.1007/978-3-319-48200-2_66
Publisher Name: Springer, Cham
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