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Impacts of Mineralogy on Soluble Phosphorus Concentrations During Low Temperature Processing of Jamaican Bauxites Read chapter Read first chapter

2020 | OriginalPaper | Chapter

Study of Heat Distribution Due to ACD Variations for Anode Setting

Authors : Choon-Jie Wong, Yuchen Yao, Jie Bao, Maria Skyllas-Kazacos, Barry J. Welch, Ali Jassim

Published in: Light Metals 2020

Publisher: Springer International Publishing

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Abstract

The carbon anodes in a Hall-Héroult cell are continuously consumed and thus require periodic replacement. During the setting of a cold new anode, bath freezes around it, causing the anode current flow to be impeded and redistributed to the other anodes. The anode setting event introduces significant disturbances which affects cell stability and thermal balance. Common work practices, such as anode beam raising, affect the bath temperature in the entire cell, even for regions far away from where the anodes will be set. With measurements of anode current distribution, control strategies for anode setting can be optimized and improved, for example by preheating the region where anodes will be set. In this paper, the effects of raising groups of anodes on the distribution of bath temperature is investigated. The results show that heat generation can be targeted to specific regions in the bath, as well as to minimize the unwanted effect on ledge profile. Additionally, contrary to simple intuition, raising anodes in a particular bath region is shown to have a greater effect on other bath regions.

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previous chapter Numerical Investigation of Flow Field Effect on Ledge Shape in Aluminum Reduction Cell by Coupled Thermo-Flow Model
next chapter Anodic Incident Detection through Multivariate Analysis of Individual Anode Current Signals
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Metadata
Title
Study of Heat Distribution Due to ACD Variations for Anode Setting
Authors
Choon-Jie Wong
Yuchen Yao
Jie Bao
Maria Skyllas-Kazacos
Barry J. Welch
Ali Jassim
Copyright Year
2020
Book
Light Metals 2020

Print ISBN: 978-3-030-36407-6

Electronic ISBN: 978-3-030-36408-3

Copyright Year: 2020

DOI
https://doi.org/10.1007/978-3-030-36408-3_73

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