ProgramMaster Logo
Conference Tools for 2022 TMS Annual Meeting & Exhibition
Register as a New User
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Aluminum Reduction Technology
Presentation Title Oxide Sensor Measurements and Simultaneous Optical Observations during Dissolution of Alumina in Cryolite Melt
Author(s) Luis Bracamonte, Kristian Etienne Einarsrud, Christian Rosenkilde, Espen Sandnes
On-Site Speaker (Planned) Espen Sandnes
Abstract Scope Faster dissolution of alumina in a cryolite based bath is one of the key challenges for increasing the energy efficiency and production rate for the Hall-Héroult process. More knowledge of the alumina dissolution process becomes important in order to obtain the improvements. In this work an alumina sensor based on the electromotive force principle was applied to measure the concentration of dissolved alumina in a cryolite based bath from the addition of the alumina and throughout the entire dissolution process. Simultaneously, the dissolution process was video recorded. The measurements were performed in a see-through furnace applying a crucible of quartz, and three different industrial grade secondary aluminas were added in 1 wt% subsequent additions. The general working principle of the sensor was studied and the information extracted from the video recordings was used to explain the sensor results as well as the general dissolution phenomena at different alumina concentrations.
Proceedings Inclusion? Planned: Light Metals


A Pragmatic Model for Alumina Feeding
A Water Model Study of Alumina Feeding and Dispersion
Advanced Alumina Dissolution Modelling
An Attempt to Estimate the Sulfuric Acid Dewpoint in the Flue Gas from Aluminium Electrolysis Cells
Bauxite & Alumina: Now and In the Future
Concentration Distribution of Carbon Particles in Aluminium Electrolysis Cells
Developing and Implementing an Efficient Forced Cooling Network at Aluminerie Alouette
Direct Production of Aluminum Manganese and Silicon Alloys in Aluminum Reduction Cells, A Laboratory Test
Direct Production of Aluminum Titanium Alloys in Aluminum Reduction Cells, A Laboratory Test
Empirical Prediction of Alumina Dissolution Rate in a Cryolitic Melt: Comparison with the Existing Literature
Imaging Alumina Distribution Using Low-voltage Anode Effect Detections in Anodic Current
Managing Power Interruptions at 360 KA Smelter
Mass Transport by Waves: Physical Model with Coalescence, Fragmentation, and Displacement on a Bath-metal Interface
Modeling of the Heat Exchange, the Phase Change, and Dissolution of Alumina Injected in Electrolysis Cells
Oxide Sensor Measurements and Simultaneous Optical Observations during Dissolution of Alumina in Cryolite Melt
Preparation of Aluminum Master Alloys by Electrolytic Co-deposition in Hall-Héroult Cells
Restart of Copper-insert Pots in EGA's High Amperage Potlines
Stabilizing a Low-dimensional Model of Magnetohydrodynamic Instabilities in Aluminum Electrolysis Cells
Statistical Model for Forecasting the Cell Replacement Rate in an Aluminum Smelter
Strategic Training and Development of Smelter Teams to Improve Business Outcomes
The Survivability of Aluminum Potlines after Lengthy Electrical Power Outages
Trace Elements in Aluminium Smelting Carbon Dust and Their Extraction

Questions about ProgramMaster? Contact