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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Aluminum Reduction Technology
Presentation Title Restart of Copper-insert Pots in EGA's High Amperage Potlines
Author(s) Ali Jassim, Pradeep Kalidindi, Shaikha Al Shehhi, Najeeba Al Jabri, Abdallah Rahbar, Nadia Ahli
On-Site Speaker (Planned) Ali Jassim
Abstract Scope Good performance in pot preheat, start- up and early operation is key for pot life in long run. However, instances shall be encountered where few pots might need to be cut out earlier than expected potlife due to power outage or to abnormal pot condition in early operation or later. Copper-insert collector bars have become a requisite for lining design to improve energy efficiency. Restart experience of copper-insert pots is different than of pots with conventional steel collector bars. Experience in start-up of copper-insert pots is captured in detailed systematic procedures, such as collector bar resistance measurement, taken on cavity cleaned cathode, and pot restart economic study estimating the cost of restart and expected pot life to payback. Procedures detailing the activities and parameter changes required during pot cut-in, preheat control and stabilization period during early life are presented in this paper.
Proceedings Inclusion? Planned: Light Metals


A Pragmatic Model for Alumina Feeding
A Water Model Study of Alumina Feeding and Dispersion
Advanced Alumina Dissolution Modelling
An Attempt to Estimate the Sulfuric Acid Dewpoint in the Flue Gas from Aluminium Electrolysis Cells
Bauxite & Alumina: Now and In the Future
Concentration Distribution of Carbon Particles in Aluminium Electrolysis Cells
Developing and Implementing an Efficient Forced Cooling Network at Aluminerie Alouette
Direct Production of Aluminum Manganese and Silicon Alloys in Aluminum Reduction Cells, A Laboratory Test
Direct Production of Aluminum Titanium Alloys in Aluminum Reduction Cells, A Laboratory Test
Empirical Prediction of Alumina Dissolution Rate in a Cryolitic Melt: Comparison with the Existing Literature
Imaging Alumina Distribution Using Low-voltage Anode Effect Detections in Anodic Current
Managing Power Interruptions at 360 KA Smelter
Mass Transport by Waves: Physical Model with Coalescence, Fragmentation, and Displacement on a Bath-metal Interface
Modeling of the Heat Exchange, the Phase Change, and Dissolution of Alumina Injected in Electrolysis Cells
Oxide Sensor Measurements and Simultaneous Optical Observations during Dissolution of Alumina in Cryolite Melt
Preparation of Aluminum Master Alloys by Electrolytic Co-deposition in Hall-Héroult Cells
Restart of Copper-insert Pots in EGA's High Amperage Potlines
Stabilizing a Low-dimensional Model of Magnetohydrodynamic Instabilities in Aluminum Electrolysis Cells
Statistical Model for Forecasting the Cell Replacement Rate in an Aluminum Smelter
Strategic Training and Development of Smelter Teams to Improve Business Outcomes
The Survivability of Aluminum Potlines after Lengthy Electrical Power Outages
Trace Elements in Aluminium Smelting Carbon Dust and Their Extraction

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