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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Primary Aluminum Industry - Energy and Emission Reductions: An LMD Symposium in Honor of Halvor Kvande
Presentation Title The Importance of Respecting the Underlying Science and Physics When Maximising Productivity and Return on Investment of Modern Aluminium Smelting Technology
Author(s) Barry J. Welch
On-Site Speaker (Planned) Barry J. Welch
Abstract Scope Thanks to careful laboratory research, over the years the aluminium smelting industry has benefited by from the generation of precise data on many of the physicochemical properties of electrolyte compositions and electrochemical products. Depending on the cell design and applied electrochemical conditions a range of primary and secondary reactions occur in the cell - some beneficial to the objectives, others not. The relative rates of what happens and the values of the outputs is however dependent on the combination of science and physics of the system. Current designs introduce the consumable alumina in a batch manner at discrete locations and at vastly different temperatures. Thus, the required speed of dissolution and resulting quality and mechanism of mixing will vary with design features. The general trend when increasing productivity is to significantly reduce the liquid bath volume thus placing greater stress on alumina dissolution and mixing. Simultaneously efforts to reduce energy such as introducing slots in the anode change the dynamics and physics of the electrolyte mixing as well. The problems that consequently arise highlight the need for respecting the underlying science when making changes!
Proceedings Inclusion? Planned: Light Metals
Keywords Aluminum,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Historical Review of Aluminum Reduction Cell Start-up and Early Operation
Direct and indirect CO2 equivalent emissions from primary aluminium production
Environmental Enhancement of Potroom Processes by Using a Machine Vision System
Gas Recycling and Energy Recovery. Future Handling of Flue Gas from Aluminium Electrolysis Cells
Halvor Kvande: An Academic Ambassador in Aluminum Between China and Norway
Ready-to-Use Cathodes in high amperage technologies
Reflections on the Low Voltage Anode Effect in Aluminium Electrolysis Cells
Sampling and analysis methodology review to report total PFC emissions
SCALE FORMATION IN PRIMARY ALUMINIUM PRODUCTION
The Importance of Respecting the Underlying Science and Physics When Maximising Productivity and Return on Investment of Modern Aluminium Smelting Technology
The TMS Industrial Aluminum Electrolysis Course – History, Development of Contents, and Future
Vaporization of Fluorides from Aluminium Cells. Part II: Treatment of Spent Potlining in a Laboratory Furnace
Vaporization of Fluorides from Aluminium Cells. Part I: Theoretical Study on Replacement of Aluminium Fluoride and Soda

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