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Carbon Dust—Its Short-Term Influence on Potroom Operations During Anode Change

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Light Metals 2021

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

Carbon dust refers to carbon particles, originating from carbon inputs into the smelting process like anodes, that float on top of the bath, below anodes or suspended in the bath. The phenomenon has a deleterious effect on the specific energy consumption of cells and can lead to anode deformations, hot cells out of the process window and stoppage of cells. Trials were conducted in the TRIMET Hamburg Smelter focusing on the effect of dust at anode changes. The conditions were chosen to be best and worst practice as assessed by a visual carbon dust assessment in the tap hole. Contrasting with published literature, there was no relation in the experiments between spike formation and carbon dust in anodes after 8 h. Anodes set in cells with a high carbon level in the tap hole did not behave differently when compared to anodes with a low carbon dust content in the tap hole. Samples obtained from the frozen bath layer underneath the anodes showed carbon contents in the range of 0.0315–6.29%.

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Author information

Authors and Affiliations

  1. TRIMET Aluminium SE, Aluminiumstraße 1, 21129, Hamburg, Germany

    Matthias Dechent, Richard Meier & Lea Tiedemann

  2. University of Auckland, Auckland, New Zealand

    Mark Philip Taylor

  3. R&D Carbon Ltd., P.O. Box 362, 3960, Sierre, Switzerland

    Markus Meier

  4. IME RWTH Aachen, Intzestraße 3, Aachen, Germany

    Bernd Friedrich

Authors
  1. Matthias Dechent
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  2. Mark Philip Taylor
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  3. Richard Meier
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  4. Lea Tiedemann
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  5. Markus Meier
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  6. Bernd Friedrich
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Corresponding author

Correspondence to Matthias Dechent .

Editor information

Editors and Affiliations

  1. Outotec Norway AS, Oslo, Norway

    Linus Perander

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Dechent, M., Taylor, M.P., Meier, R., Tiedemann, L., Meier, M., Friedrich, B. (2021). Carbon Dust—Its Short-Term Influence on Potroom Operations During Anode Change. In: Perander, L. (eds) Light Metals 2021. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-65396-5_55

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