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Metallurgical and Materials Transactions B

, Volume 38, Issue 4, pp 707–712 | Cite as

A Case Study of Variation in Aluminum Smelting Cell Thermal State with Control Implications

  • G. TandonEmail author
  • M.P. Taylor
  • J.J.J. Chen
Article
  • 133 Downloads

Abstract

The thermal state of an aluminum smelting cell is determined principally by the following parameters: electrolyte temperature and excess aluminum fluoride concentration. Despite the attempts to control them within a predetermined specification range, large variations are observed. The focus of the present study is to identify the causes of the variation and recommend the solutions to minimize it. The task was accomplished by monitoring an industrial operating cell. The Apollo root cause analysis technique has been used to identify the underlying causes of the variation. Smelter’s response of addition of AlF3 in order to control the variation was one of the primary causes. The AlF3 addition to the cell should be based on its mass balance requirement.

Keywords

Cryolite AlF3 Interelectrode Distance Electrolyte Temperature Freeze Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© THE MINERALS, METALS & MATERIALS SOCIETY and ASM INTERNATIONAL 2007

Authors and Affiliations

  1. 1.Department of Chemical and Materials EngineeringUniversity of AucklandAucklandNew Zealand
  2. 2.Department of Chemical and Materials Engineering, Light Metals Research CentreUniversity of AucklandAucklandNew Zealand

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