| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Reduction Technology Across the Decades: An LMD Symposium Honoring Alton T. Tabereaux and Harald A. Øye
|
| Presentation Title |
In Line Cell Position and Anode Change Effects on the Alumina Dissolution |
| Author(s) |
Valdis Bojarevics |
| On-Site Speaker (Planned) |
Valdis Bojarevics |
| Abstract Scope |
The newly developed modeling technique is implemented into the specialized software to treat the industrial cell operation practices of the anode changes. Alumina feeding at regular intervals requires optimization for the feed amount and timing intervals in situations where the large scale MHD circulation experiences abrupt restructuring. The alumina particles of various sizes are traced accounting for their inertia, drag in the turbulent flow, the electrolyte layer deformed shape, and the electromagnetic force at the location. The large-scale circulation is essential to achieve the desired uniform alumina composition over the whole cell, while the local bubble evolution contributes to the turbulence level and the enhanced dissolution of the particles. Individual particles gradually dissolve in the dependence of the local turbulent diffusion and the instantaneous concentration level below the saturation. The newly developed modeling technique is applied to illustrate possible optimization of the cell performance at an arbitrary location in pot-line. |
| Proceedings Inclusion? |
Planned: Light Metals |