| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Electrode Technology for Aluminum Production
|
| Presentation Title |
Experimental Study on Sodium in Carbon Anodes |
| Author(s) |
Xavier Baril-Boudreault, Duygu Kocaefe, Dipankar Bhattacharyay, Yasar Kocaefe, Jules Côté |
| On-Site Speaker (Planned) |
Duygu Kocaefe |
| Abstract Scope |
The life span of carbon anodes is closely linked to anode quality. The impurity content of anode affects its properties, especially the anode reactivity. The anodes come into contact with the electrolyte during the electrolysis. Thus, a certain amount of sodium (Na) coming from the electrolytic bath, mainly from NaF and Na3AlF6, contaminate the anode carbon. Na-containing butts are recycled back to the anode production cycle as a raw material for the manufacture of next group of anodes. The objective of the study is to quantify the Na, to study its removal, and to understand its impact on the reactivity. The concentration of Na was measured using Na ion selective electrode. The separation of Na was carried out successfully by washing the butts with water. The results showed that there is a relation between the anode reactivity and the Na content of the anode. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Process Technology, |