|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Aluminum Reduction Technology
||Fault Detection and Diagnosis of Alumina Feeding System using Individual Anode Current Measurement
||Yuchen Yao, Jie Bao, Maria Skyllas-Kazacos, Barry Welch, Ali Jassim, Choon Jie Wong , Jing Shi
|On-Site Speaker (Planned)
With the growth in sizes of the Hall-Héroult cells, the detection and diagnosis of faults in the Hall-Héroult process has becoming more difficult, as the information from the cell resistance, which is obtained from the line current and cell voltage, only indicates overall cell conditions. In order to achieve improved process efficiency, the measurement of individual anode current has been studied extensively. Unlike conventionally measured line current and cell voltage, individual anode currents provide the information about the localized cell conditions. This paper presents a method to detect faults in the alumina feeding system in the Hall-Héroult cells from individual anode current measurement. It involves the dynamic estimation of the feeding system status by incorporating a mass balance model, without using physical sensors attached to the feeders. This method is shown to be effective in observing feeder failure, identifying failed feeder location and reporting calibration error in feeder dump weight.
||Planned: Light Metals