|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Aluminum Reduction Technology
||Sideledge Facing Metal in Aluminium Electrolysis Cells: Preliminary Modelling Study of Bath Film Formation
||Nils-Håvard Giskeødegård, Asbjørn Solheim, Nancy Jorunn Holt
|On-Site Speaker (Planned)
For design and operation of highly efficient aluminium electrolysis cells, knowledge concerning side ledge formation and heat loss through the sides is indispensable. Measurement of ledge profiles and heat fluxes seems to concur with theoretical models only by including a thin film of bath located at the metal-sidewall interface. A transient FLUENT model is built, including metal circulation. The model includes two liquids (bath film and metal) with the bath film initially sitting at the lowest two cm in the metal zone, before it proceeds upwards along the wall by gravitation and surface tension. A parameter study is conducted with surface tension, bath film properties, and metal flow as parameters. It is shown that metal flow has a considerable impact on the film formation rate. The modelled bath film behaviour is in accordance with theoretical considerations.
||Planned: Light Metals Volume