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| Numerical Simulation of Effect of Underfeeding and Overfeeding Configurations on Alumina Concentration Distribution in Aluminum Reduction Cells |
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Received:July 05, 2017
Revised:July 05, 2017
Accepted:July 07, 2017
Published Online:November 22, 2017
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| DOI：doi：10.3969/j.issn.1007-7545.2017.12.004 |
| KeyWord:aluminum reduction cells; underfeeding and overfeeding configuration; gas-liquid two-phase flow; alumina concentration; numerical simulation |
| Author | Institution |
| ZHAN Shui-qing |
江苏大学 |
| YANG Jian-hong |
江苏大学 |
| WANG Zhen-tao |
江苏大学 |
| WANG Jun-feng |
江苏大学 |
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| Abstract: |
| Based on results of previous study on gas-liquid two-phase flows and alumina dissolution and transport, Euler-Euler two-fluid model and transport equation of alumina concentration with coupling effect of alumina dissolution behavior were presented. Effects of underfeeding and overfeeding configurations on alumina concentration distribution characteristics were investigated and discussed. The simulation results show that high and low alumina concentration areas exist in the cell. Alumina concentration drops steadily during underfeeding, but continuously rises during overfeeding. Volume-average alumina concentrations in the whole cell as well as high and low concentration areas for different exchange of underfeeding and overfeeding configurations are under industrial process control. |
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