Abstract
Laboratory tests have shown that there is a significant effect of coke source, binder content, forming method, and baking temperature on the properties of prebaked carbon. Density, mechanical strength, Young’s modulus, and thermal conductivity increase and electric resistivity and anode consumption decrease as the binder content increases to optimum. Vibrated test electrodes are more sensitive to changes in coke source and binder content than pressed electrodes. The use of high amounts of anode butts has a slightly adverse effect on electric resistivity, rate of oxidation, and anode consumption, while it improves mechanical strength. Increasing the quinoline insoluble content of the pitch binder results in a higher binder requirement, improved mechanical properties, but not significantly different anode consumption. Rates of change in the binder requirement equal to 0.12 wt % per 0.01 g/cm3 increase in coke bulk density were found. Examination of plant vibrated and pressed anodes produced from the same mix showed lower density, mechanical strength, and Young’s modulus for the vibrated anodes which also performed better in the potrooms.
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References
Hollingshead, E.A., and Braunwarth, V.A., Laboratory Investigation of Anode Consumption in the Electrolytic Production of Aluminium. Extractive Metallurgy of Aluminium, Vol. 2, 31–50. Interscience 1963.
Rhedey, P., A Review of Factors Affecting Carbon Anode Consumption in the Electrolytic Production of Aluminium. Light Metals 1971, pp 385–406. Proceedings of Symposia 100th AIME Annual Meeting, New York 1–4 March 1971.
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© 2016 The Minerals, Metals & Materials Society
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Brown, J.A., Rhedey, P.J. (2016). Characterization of Prebaked Anode Carbon By Mechanical and Thermal Properties. In: Tomsett, A., Johnson, J. (eds) Essential Readings in Light Metals. Springer, Cham. https://doi.org/10.1007/978-3-319-48200-2_38
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DOI: https://doi.org/10.1007/978-3-319-48200-2_38
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48577-5
Online ISBN: 978-3-319-48200-2
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