| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Electrode Technology for Aluminum Production
|
| Presentation Title |
Development and Applications of the Four Points Probe (4PP) Electrical Resistivity Measurements for Anode Process Optimization |
| Author(s) |
Julien Lauzon-Gauthier, John Secasan |
| On-Site Speaker (Planned) |
Julien Lauzon-Gauthier |
| Abstract Scope |
Electrical resistivity (ER) measurements for anodes have been around for more than 50 years. These measurements, as well as any other voltage drop measurement methods on green or baked anodes can be used for quality control (QC). However, correlations between these QC criteria, especially on green anodes, and their behavior in the pots have not been established. It is difficult to determine absolute pass/reject thresholds, and hence the benefits are hard to quantify. However, it is possible to use those methods for process control and monitoring. A non-destructive (NDT) measurement method of ER based on the 4PP technique was developed by Alcoa for that purpose. It can be used on both green and baked anodes. The development and the capabilities of the equipment for pitch optimization of the green anode is described. Observations on QC for green and baked anodes are also discussed based on the results obtained during the development and trial experiments. |
| Proceedings Inclusion? |
Planned: Light Metals |