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Reduced Ventilation of Upper Part of Aluminum Smelting Pot: Potential Benefits, Drawbacks, and Design Modifications

  • Ruijie Zhao
  • Louis Gosselin
  • Mario Fafard
  • Donald P. Ziegler
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

Maintaining current draft conditions in the upper part of Al smelting cell requires important electricity consumption for the fans. A reduction of the ventilation rate could significantly diminish the total power requirement at the blowers. However, adverse changes in operating conditions due to this ventilation reduction may disrupt the pot thermal equilibrium. A CFD model was created to investigate the influence of ventilation reduction on pot thermal balance. With the objective of maintaining normal heat losses by the top of the cell, several modifications are simulated, such as using plate fins on the anode assembly, changing hood gap geometry and modifying anode cover thickness. Heat transfer rates are determined for these modified designs, and compared to those currently achieved.

Keywords

aluminum smelting pot energy efficiency fan power CFD ventilation reduction 

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Copyright information

© The Minerals, Metals & Materials Society 2016

Authors and Affiliations

  • Ruijie Zhao
    • 1
    • 2
  • Louis Gosselin
    • 1
  • Mario Fafard
    • 2
  • Donald P. Ziegler
    • 3
  1. 1.Aluminium Research Centre-REGAL and Departement of Mechanical EngineeringUniversité LavalQuébec City, QuébecCanada
  2. 2.NSERC/Alcoa Industrial Research Chair MACE and Aluminium Research Centre-REGALUniversité LavalQuébec City, QuébecCanada
  3. 3.Aluminerie DeschambaultAlcoa Canada Primary MetalsDeschambault-GrondinesCanada

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