Bubble Noise from Søderberg Pots

  • Marianne Jensen
  • Tor Bjarne Pedersen
  • Kjell Kalgraf

Abstract

High frequency measurements of voltage were introduced at Elkem Aluminium Lista in order to find the effect of noise from the release of gas bubbles under the anode — bubble noise. On a Søderberg pot the bubble noise represents a fairly large portion of the total pot noise. Hence it is important to understand what impacts the bubble noise in order to understand and control the Søderberg pot in a better way.

The bubble noise varies quite a lot over time and between pots. The variations are related to different process conditions. Looking at number of anode problems and carbon dust generation there is a correlation between the bubble noise and the quality of the Søderberg anode. The metal quality is also strongly impacted by a change in the bubble noise. Several process conditions have been investigated, presented and discussed in the paper.

Keywords

Aluminium Søderberg Bubble noise Anode 

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References

  1. 1).
    T.B.Pedersen et al., “Results from implementation of point feeders and complete hooding on VS Søderberg pots”, Light Metals 1998, pp. 221–226.Google Scholar
  2. 2).
    T.B. Pedersen, The Søderberg Cell Technology — present performance, challenges and possibilities, Light Metals 2001, pp. 489–495Google Scholar

Copyright information

© The Minerals, Metals & Materials Society 2016

Authors and Affiliations

  • Marianne Jensen
    • 1
  • Tor Bjarne Pedersen
    • 1
  • Kjell Kalgraf
    • 1
  1. 1.Elkem Aluminium ANS ResearchKristiansandNorway

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