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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Aluminum Reduction Technology
Presentation Title Dissimilar Results in Restarting Two Different Potlines
Author(s) Maria CAROLINA Daviou, Maria Alejandra Mollecker Rausch, Ricardo Alonso, Maria Fernanda Jaitman
On-Site Speaker (Planned) Maria CAROLINA Daviou
Abstract Scope In March 2020, Aluar reduced its production. Two potlines with different technologies were halted within two weeks’ time. Metal was left in the pots in order to preserve the cathode conditions during stoppage, so the repair procedure for the restart consisted in cleaning the metal surface, sidewall repairing and gas preheating. The restartup of AP22 pots in Potline C was successfully accomplished six months later, with no incidents and a low early failure rate. Two years after, a pre-existed failure mode was identified during the restart of end-to-end al20 pots in Potline B. As a result, a higher amount of pots could not survive. This paper highlights the experience gained of a planned but necessary shutdown of 344 pots together with the challenges involved, not only in restarting two different potlines in a completely diverse context, but also in the strategic criterion proposed for a pot restart in each case.
Proceedings Inclusion? Planned: Light Metals
Keywords Aluminum, Other,


Achieving Low Pot Failure Rate at Aditya Aluminium
Application of Cell Retrofit in GP320 Aluminum Reduction Cell Line
CFD Modelling of Solidification and Melting of Bath during Raft Formation
Dissimilar Results in Restarting Two Different Potlines
Evaluation of Methodologies for Assessment of SO3 Concentration in Industrial Off-gas
Experimental Investigation of the Alumina Cloud During Alumina Injections in Low And High Temperature Conditions
Fundamental Mass Transfer Correlations Based on Experimental and Literature Data
Fundamentals of Pot Ventilation in Aluminum Smelters
Mathematical Modelling of the Desulfurization of Electrolysis Cell Gases in a Low Temperature Reactor
Numerical Investigation of the Thermal, Electrical and Mechanical Behaviour of Aluminum Reduction Cell during Preheating Phase
Potential of Production Al-Si Green Alloys in AP18 Aluminium Reduction Cell
Preheat, Start-up and Early Operation of DX+ Ultra Pots at 500 kA
Recent Improvements to a Mathematical Model Replicating the Wave and Stream at the Bath-metal Interface
Restart of Albras’ Potline 2 – Improving Performance and Changing Paradigms
Simplified 3D MHD Model for Quick Evaluation of Aluminium Electrolysis Cell Design
The Expanded Industrial Pilot of SAMI’s NCCT+ Technology
The SY500 Potline Technology Development

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