|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Aluminum Reduction Technology
||Dissolution Characteristics and Concentration Measurements of Alumina in Cryolite Melts
||Luis Bracamonte, Vegard Aulie, Christian Rosenkilde, Kristian Einarsrud, Espen Sandnes
|On-Site Speaker (Planned)
Acquirement of reliable data is a key factor to better understand alumina dissolution, one of the most important processes in the Hall-Héroult process. Simultaneous video recording of the alumina addition and dissolution and in situ measurements of alumina concentration in cryolite melts in a see-through oven, can be a powerful method to reveal crucial information such as the behavior and the variation of the alumina concentration during the entire dissolution process. The sensor data reflecting the actual dissolved alumina in the melt, is interesting individually, but especially when analyzed together with the alumina-bath interaction obtained from the see-through cell. In this work, video recording using a high-speed camera and electromotive force (emf) based alumina sensor measurements were performed during the addition of alumina and throughout the entire dissolution process. The measurements were performed in a see-through cell changing different variables such as alumina quality, alumina particle size and bath composition.
||Planned: Light Metals