Numerical simulation of melt convection in an AC electro-fused magnesia furnace for MgO production

DOI

10.2991/icmmcce-17.2017.181How to use a DOI?

Keywords

Fused MgO; Electric arc furnace; Convection; Simulation.

Abstract

In order to better understand the melt convection in an electro-fused magnesia furnace (EFMF), a 3D finite element method based model of the furnace is presented. The effect of the electromagnetic stirring and buoyancy driving forces on the melt flow are investigated in three typical cases with different bath dimensions. Dimensionless parameters including Reynolds number, Richardson number and Prandtl number are introduced to characterize the melt convection. The numerical results indicate that the convection is fully turbulent, and the flow and temperature fields are both significantly influenced by the line current. According to the calculated Richardson number, neither nature nor forced convection is negligible in all cases. The buoyancy becomes more important when the bath volume grows and the current decreases, and the magnetic stirring becomes more important when the bath volume shrinks and the current increases.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhen Wang
AU  - Ninghui Wang
PY  - 2017/09
DA  - 2017/09
TI  - Numerical simulation of melt convection in an AC electro-fused magnesia furnace for MgO production
BT  - Proceedings of the 2017 5th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering (ICMMCCE 2017)
PB  - Atlantis Press
SP  - 1008
EP  - 1012
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmcce-17.2017.181
DO  - 10.2991/icmmcce-17.2017.181
ID  - Wang2017/09
ER  -