AP 50: The Pechiney 500 kA Cell

  • C. Vanvoren
  • P. Homsi
  • J L. Basquin
  • T. Beheregaray

Abstract

As a result of ten years of extensive tests carried out on three prototypes, Aluminium Pechiney has developed a new generation of reduction cell.

Designed with the help of advanced computer models to achieve magnetic stability and optimize potroom ventilation and temperature, these prototype cells were progressively boosted with improved shell ventilation and modified anode assemblies allowing operation at 500 kA with a current efficiency of 95%.

The AP 50 cell process control features fully integrated automatic measurement of bath temperature and height for enhanced thermal stability. Improved alumina feeding almost totally eliminates anode effects, ensuring a CO2 equivalent emission level close to the anode consumption CO2 emission.

The AP 50 technology with a single potline of 336 cells having an annual output of 460 kt will increase productivity per employee by 35% and reduce investment cost by 15% compared to a two-potline AP 30 smelter.

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Reference Journal

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    O. Bonnardel, P. Marcellin, Aluminium Pechiney, Alumina feeding regulation process. FR 2 749 858 patent, French priority 07712, dated 1996, June-17.Google Scholar
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    P. Homsi, O. Granacher, B. Sulmont, Aluminium Pechiney, Bath temperature and level measurement device and process. FR 2 727 985 patent, French priority 15086, dated 1994, December-09.Google Scholar
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    O. P. Bonnardel and P. Homsi, “The Pechiney Semi-Continuous and Automatic Measurement Device (CMD), A New Tool for Automatic Measurements”, Light Metals1999. pp. 303–309.Google Scholar
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    P. Homsi, O. Bonnardel, Aluminium Pechiney, Bath temperature regulation process. FR 2 753 727 patent, French priority 11962, dated 1996, September-25.Google Scholar

Copyright information

© The Minerals, Metals & Materials Society 2016

Authors and Affiliations

  • C. Vanvoren
    • 1
  • P. Homsi
    • 1
  • J L. Basquin
    • 1
  • T. Beheregaray
    • 1
  1. 1.Aluminum PechineySt-Jean-de-Maurienne CédexFrance

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