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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Electrode Technology for Aluminum Production
Presentation Title Diffusion Measurements of CO2 within Carbon Anodes for Aluminium Smelting
Author(s) Epma Lupita Putri, Geoffrey Brooks, Graeme Snook, Lorentz Petter Lossius, Ingo Eick
On-Site Speaker (Planned) Geoffrey Brooks
Abstract Scope Study of CO/CO2 gas transport mechanism between the active electrolysis sites and the anode pores will be addressed in this paper to further understand bubble nucleation for energy saving possibilities in the aluminium production. The gas diffusion experiment was conducted to predict and measure the diffusion coefficient of CO2 in conjunction with characterization of anode carbons in terms of its impurities, porosity and permeability. The diffusion coefficient value obtained varied from 1.38 x10-6 m2/s to 7.89 x10-6 m2/s in the range of temperature 25 to 960°C. The relationship between permeability and properties of porous anode has also been determined numerically with the help of COMSOL Multiphysics software. The results showed there are a few factors that effecting the diffusion coefficient of carbon dioxide such as anode pore characteristics, pressure differences related to material permeability and the chemical reaction between carbon dioxide and anode carbon due to Boudouard reaction above 600°C.
Proceedings Inclusion? Planned: Light Metals


10 Years of Anode Research and Development: Alcoa & Université Laval Experience
Additive Selection for Coal Tar Pitch Modification in Aluminum Industry
An EXAFS and XANES Study of V, Ni, and Fe Speciation in Cokes for Anodes Used in Aluminum Production
Anhydrous Carbon Pellets – An Engineered CPC Raw Material
Carbon Anode Raw Materials – Where is the Cutting Edge?
Charcoal and Use of Green Binder for Use in Carbon Anodes in the Aluminium Industry
Development of a Soft Sensor for Detecting Overpitched Green Anodes
Diffusion Measurements of CO2 within Carbon Anodes for Aluminium Smelting
Energy Saving in Hall-Héroult Cell by Optimization of Anode Assembly Design
Environmental Benefits of Using Spent Pot Lining (SPL) in Cement Production
Higher Baking and Production Levels in Anode Baking Furnaces and Associated Challenges
How to Improve the Environmental Efficiency of the Hall-Heroult Process While Producing and Using Carbon Anodes?
Influence of Particle Shape and Porosity on the Bulk Density of Anode Grade Petroleum Coke
Major Reconstruction of Central Casing of Open Top Baking Furnace with a View to Increase Its Lifespan and Reduce the Total Costs Comparing to Full Reconstruction
Modelling of Gas Injection on Anode Baking Furnace and Application to Operations
Purification of Graphite by Thermal Vacuum Treatment of Spent Potlining
Ready-to-Use Cathodes for the Hall-Héroult Process
Redesigning of Current Carrying Conductor - The Energy Reduction Initiative in Low Amperage Hall-Héroult Cell
Solids Flow Considerations and their Impact in Smelter Carbon Plant Operations and Product Quality
Sustainable Spent Pot Lining Management Guidance
Testing of SERMA Technology on Industrial Anodes for Quality Control in Aluminum Production
The Development of Anode Shape, Size and Assembly Designs - Past Present and Future Needs
The LCL&L Process: A Sustainable Solution for the Treatment and Recycling of Spent Potlining
Trends in Carbon Anode Production

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