Thermal Conductivity of Compounds Present in the Side Ledge in Aluminium Electrolysis Cells

Gheribi, Aïmen E.; Chartrand, Patrice

doi:10.1007/s11837-017-2563-8

Cited by 8 publications

(1 citation statement)

References 31 publications

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“…During electrolysis, a layer of frozen electrolyte is formed on the surface of the sidewall (Allard et al, 2019b). The role of the electrolyte layer is to protect the sidewall material from chemical attack by the electrolyte melt and the aluminium solution (Gheribi and Chartrand, 2017). The main components of the sidewall are NaF, CaF 2 , Na 3 AlF 6 , Na 5 Al 3 F 14 , α-NaCaAlF 6 , Al 2 O 3 , NaAl 11 O 17 and anode coke.…”

Section: Aluminium Electrolysis Processmentioning

confidence: 99%

A comprehensive review of aluminium electrolysis and the waste generated by it

Liu

Zhang

2023

Waste Manag Res

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Aluminium is produced by electrolysis using alumina (Al2O3) as raw material and cryolite (Na3AlF6) as electrolyte. In this Hall–Héroult process, the energy consumption is relatively large, and solid wastes such as spent anodes and spent pot liner, flue gas and waste heat are generated. Therefore, this article discusses from the perspective of high energy consumption and high pollution and summarizes the methods to reduce energy consumption and solve pollution problems. The functions of carbon anode, carbon cathode, refractory material and sidewall in aluminium electrolysis cells are discussed in detail. The process of aluminium electrolysis and the ways to improve the current efficiency of aluminium electrolysis cells and reduce their energy consumption are outlined. The causes and treatment methods of spent anodes, spent cathodes, spent refractories and spent spot liner are reviewed. The research progress of waste heat recovery and aluminium electrolysis flue gas purification are analysed. And the future research directions of aluminium electrolysis flue gas are provided.

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Section: Aluminium Electrolysis Processmentioning

confidence: 99%