| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Electrode Technology for Aluminum Production
|
| Presentation Title |
Electrochemical Characterization of Bubble Behaviour on Pilot Anodes with Varying Porosity and Coke Quality |
| Author(s) |
Goril Jahrsengene, Arne Petter Ratvik, Lorentz Petter Lossius, Ann Mari Svensson |
| On-Site Speaker (Planned) |
Goril Jahrsengene |
| Abstract Scope |
The aluminium industry is concerned by the predicted quality changes in available petroleum cokes used for the prebaked carbon anodes. The knowledge on effects of the high-sulfur cokes on the electrochemical reactivity is limited. In this study, the electrochemical performance in the form of voltage oscillations related to bubble formation on the horizontal surface of the anode is investigated with respect to both coke quality and anode properties. Pilot anodes made from five industrial cokes, ranging from 1.42 to 5.54 wt% S was studied. For anodes produced with anisotropic cokes the voltage oscillations behave similarly to each other, and the value of the amplitude correlate with the anode properties, mainly the permeability. More permeable anodes result in lower voltage oscillations, similar to what is observed for isotropic coke, for which the effect can be assumed to be a combination of coke quality and anode characteristics. |
| Proceedings Inclusion? |
Planned: Light Metals |