About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
60 Years of Taking Aluminum Smelting Research and Development from New Zealand to the World: An LMD Symposium in Honor of Barry J. Welch
|
Presentation Title |
A Discussion on Thermal Impact of Anode Change in Aluminum Reduction Cell |
Author(s) |
Zhibin Zhao, Wei Liu, Yafeng Liu, Michael A. Ren |
On-Site Speaker (Planned) |
Michael A. Ren |
Abstract Scope |
Anode change is the most important operation in aluminum electrolysis industry. Influence of new anodes are mainly concentrated in two aspects: a) huge impact on thermal balance of reduction cells by massive anodes with low temperature and b) newly settled anodes wrapped by a layer of insulating solidified electrolyte generates remarkable horizontal current in aluminum pad. This paper only focuses on thermal impact of anode change. The paper theoretically calculates heat absorption of new anodes and heat release of additional voltage, metal/bath temperature decrease, and ledge solidification. An interim summary was proposed. A new finding is introduced that the anode change in one pot has an individualized characteristic, for which different additional voltage strategies should be applied. An industrial trial has been conducted here. Some methods for decreasing thermal impact of anode change, including anode pre-heating, inert anodes and continuous anodes were also discussed and analyzed. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Other, Other |