Abstract
Carbon anodes can contain significant quantities of sodium depending on the raw materials and recycled butts cleanliness. The extent of the catalytic effect of the sodium on the anode reactivity, i.e. the “sodium sensitivity”, is dependant on the coke nature.
An investigation of a range of petroleum cokes was undertaken to study the influence of the sulphur on the sodium sensitivity. Besides the standard characterisation tests, a range of analytical methods was employed including Controlled Atmosphere Electron Microscopy (CAEM), X-ray Photoelectron Spectroscopy (XPS), Secondary Ion Mass Spectrometry (SIMS) and Thermogravimetric Analysis (TGA).
The results of these investigations have been used to elucidate a mechanism to explain the sodium sensitivity.
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© 2016 The Minerals, Metals & Materials Society
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Hume, S.M., Fischer, W.K., Perruchoud, R.C., Metson, J.B., Baker, R.T.K. (2016). Influence of Petroleum Coke Sulphur Content on the Sodium Sensitivity of Carbon Anodes. In: Tomsett, A., Johnson, J. (eds) Essential Readings in Light Metals. Springer, Cham. https://doi.org/10.1007/978-3-319-48200-2_17
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DOI: https://doi.org/10.1007/978-3-319-48200-2_17
Publisher Name: Springer, Cham
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