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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Aluminum Reduction Technology Joint Session with REWAS: Decarbonizing the Metals Industry
Presentation Title Bus Bars FSW Repair during Full Operation of Alumina Electrolysis
Author(s) Peter Brziak, Gabriel Batista, Oliver Rovný, Vojtech Václav, Rastislav Dankovič
On-Site Speaker (Planned) Peter Brziak
Abstract Scope The electrolyser bus bars, as any other part of production process, need maintenance, repair, or replacement when necessary. To decrease the current loses caused by poor bus bars interconnections, the fusion welding is used widely. However magnetic field generated by DC current make fusion welding impossible when electrolysis is operating. On the other hand, even temporary electrolysis shut down brings along several problems when process is starting up again. Direct and indirect economical loses relate for example to an increased energy consumption and decreased remanet life of some components. The article deals with solid-state welding process fully convenient for weld repair in electrolysis hall during full operation of all electrolysers. Laboratory experiments followed by pilot repair welding during electrolysis operation employing portable welding device proved the expected weld quality mainly in terms of mechanical properties and resistivity.
Proceedings Inclusion? Planned: Light Metals


Building of a Superconductor Busbar at 200 kA for an Aluminium Plant
Bus Bars FSW Repair during Full Operation of Alumina Electrolysis
Cooling of Pot Gas Enabling Carbon Footprint Reductions
Research on Low Temperature Aluminium Electrolysis Charging Recovery System of Renewable Energy Cycle Power Generation System
Stabilizing Electrolysis Cells with Oscillating Currents: Amplitude, Frequency and Current Efficiency
The Contribution and Economics of Demand Side Response towards Decarbonizing the Aluminium Industry

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