| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Electrode Technology for Aluminum Production
|
| Presentation Title |
Estimation of the Coke Calcination Yield by Granulometry Analysis |
| Author(s) |
Hans Darmstadt, Marie-Josee Dion, André Bouchard, Luc Côté |
| On-Site Speaker (Planned) |
Hans Darmstadt |
| Abstract Scope |
At Rio Tinto operated calciners, the weights of the green petroleum coke (GPC) feed and of the produced calcined petroleum coke (CPC) is continuously measured by belt scales. In spite of frequent calibration, CPC yields based on the measured mass flows are not always accurate. Thus, CPC yields are calculated from GPC deliveries, CPC shipments, and inventory changes. This approach only allows calculating CPC yields over long periods. An alternative method was therefore developed. During calcination, GPC loses its humidity and volatiles. Coke fines are entrained by the gas flow and swept out of the kiln or oxidised. The quantity of lost fines can be determined by GPC and CPC granulometry analysis. Humidity and volatiles loses correspond to their quantity in GPC. The CPC yield is calculated from these combined loses. Calculated yields agree well with values determined by the present method. Furthermore, short-term yield changes can be detected. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Other, Other, Other |