| About this Abstract |
| 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 |