A Transient Model of the Anodic Current Distribution in an Aluminum Electrolysis Cell

Guérard, Sébastien; Côté, Pascal

doi:10.1007/978-3-030-05864-7_74

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…Take the asymmetrical six terminals busbar configuration [9] as an example, the equivalent resistance corresponding to the cell is shown in Fig 2 . Considering the metal pad as an equipotential [6] and bounded by this, the cell can be divided into the anode section above the molten aluminum and the cathode section below, and the main difference between the different busbar configurations is the cathode part. In this model, in addition to the reduction pot to be studied, the cathode part of the upstream cell and the anode part of the downstream cell are also included.…”

Section: Equivalent Circuit Modelmentioning

confidence: 99%

“…Dion L et al [5] discussed a model of non-homogenous alumina and current distribution in an aluminum electrolysis cell and used it to predict low-voltage anode effects. Guérard S et al [6] used Matlab to establish a transient mathematical model of anode current and anode-cathode distance distribution, and discussed the effects of anode self-change, anode height, anode section, and disappearance of the slots on current efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of anode current distribution in aluminum electrolysis cell based on equivalent circuit numerical simulation

2023

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The development of modern industrial aluminum reduction cell towards the direction of higher line current and more anodes. The distribution of anode current and the stability of the fluid in reduction cell are directly affected by the busbar configuration. In this paper, a simulation model of the multi-loop equivalent circuit of aluminum electrolysis cell was established by using MATLAB/Simulink, and the distribution characteristics of anode current under three different current risers were analyzed. The results show that with the increase of the number of terminals, the cell voltage decreases and anode current distribution is more uniform. The anode current is positively correlated with the distance from the terminal and the current of the nearest column busbar.

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Section: Equivalent Circuit Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of anode current distribution in aluminum electrolysis cell based on equivalent circuit numerical simulation

2023

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“…While numerous dynamic reduction cell models exist (e.g., [20][21][22] ), the operating conditions and energy and productivity priorities during an anode change event are not well served by the previous approaches. In this manuscript, based on our previous work 23 that investigated how various mechanisms affect the pickup of anode current after anode replacement, we present a model with integrated mass and energy balances to describe the freeze dissolution and heat transfer from the first principle with less reliance on empirical relations.…”

mentioning

confidence: 99%

Modelling of Coupled Mass and Thermal Balances in Hall-Heroult Cells During Anode Change

Wong

Yao

Bao

et al. 2021

J. Electrochem. Soc.

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As the most routine work practice in an aluminium reduction cell, anode change introduces substantial perturbations that adversely affect the mass and heat balance of the cell which may lead to loss of process efficiency and increased energy consumption. The literature lacks a dynamic mathematical model that describes the interactions among cell variables (e.g., electrolyte temperature and flow, anode current distribution, and cell heat loss) during and following this operation, which could otherwise be used to understand the process in greater depth and to develop changes that improve process operations and control. This paper presents a spatially-discretised dynamic model for anode replacement that integrates mass balance, thermal balance and cell voltage to describe and predict local cell variables. It was experimentally validated with an industrial cell undergoing an anode change procedure. This generic model can be applied to different cell design or process conditions by using appropriate parameters (e.g., heat transfer coefficients, conductivities, and flow patterns). The model can be used to improve existing process operations or control strategies for higher process efficiency, lower energy consumption, and lower emissions.

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An Advanced Nonlinear Control Approach for Aluminum Reduction Process

Shi

Yao

Bao

et al. 2020

The Minerals, Metals &Amp; Materials Series

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A Transient Model of the Anodic Current Distribution in an Aluminum Electrolysis Cell

Cited by 5 publications

References 6 publications

Analysis of anode current distribution in aluminum electrolysis cell based on equivalent circuit numerical simulation

Analysis of anode current distribution in aluminum electrolysis cell based on equivalent circuit numerical simulation

Modelling of Coupled Mass and Thermal Balances in Hall-Heroult Cells During Anode Change

An Advanced Nonlinear Control Approach for Aluminum Reduction Process

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