Effect of Lorentz Force on Motion of Electrolyte in Magnesium Electrolysis Cell

Authors

  • Cheng-Lin Liu National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and Technology, Shanghai, 200237, China
  • Ze Sun National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and Technology, Shanghai, 200237, China
  • Gui-Min Lu National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and Technology, Shanghai, 200237, China
  • Xing-Fu Song National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and Technology, Shanghai, 200237, China
  • Jian-Guo Yu 1 National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and Technology, Shanghai, 200237, China, 2 State Key Laboratory of Chemical Engineering East China University of Science and Technology, Shanghai, 200237, China

Keywords:

Electro-magneto-hydrodynamics, Lorentz force, magnesium electrolysis cell

Abstract

Magnesium production process is highly energy intensive. Electrolysis process provides an effective route to reduce the energy consumption. In this paper, a three-dimensional electro-magneto-hydrodynamics coupling model of a 120 kA magnesium electrolysis cell using finite element method is presented. In this model, the electric field, magnetic field, and flow field are included. This paper concerns the effects of the Lorentz force on the motion of the electrolyte in the cell. The model predicts that the magnitude of Lorentz force is at its maximum near the region between the anode and cathode. The direction of the Lorentz force is beneficial to the motion of the electrolyte in the magnesium electrolysis cell.

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References

A. L. Perron, L. I. Kiss, and S. Poncsák, “Mathematical model to evaluate the ohmic resistance caused by the presence of a large number of bubbles in Hall-Héroult cells,” J. Appl. Electrochem., vol. 37, pp. 303-310, 2007.

H. Eklund, P. B. Engseth, B. Langseth, T. Mellerud, and O. Wallevik, An Improved Process for the Production of Magnesium. John Wiley & Sons, Inc. 2014.

K. Zhang, Y. Feng, P. Schwarz, Z. Wang, and M. Cooksey, “Computational fluid dynamics (CFD) modeling of bubble dynamics in the aluminum smelting process,” Ind. Eng. Chem. Res., vol. 52, pp. 11378-11390, 2013.

Z. Zhang, X. Lu, T. Wang, Y. Yan, and S. Chen, “Synthesis and electrolysis of K3NaMgCl6,” Ind. Eng. Chem. Res., vol. 54, pp. 1433-1438, 2015.

A. Rezvanpour, E. W. C. Lim, and C. Wang, “Computational and experimental studies of electrohydrodynamic atomization for pharmaceutical particle fabrication,” AIChE J., vol. 58, pp. 3329- 3340, 2012.

M. Dupuis, “Thermo-electric design of a 740 kA cell, is there a size limit?,” Aluminium: Inter. J. Ind., Res. App., vol. 81, pp. 324-327, 2005.

D. S. Severo, A. F. Schneider, E. C. Pinto, B. Gusberti, and V. Potocnik, “Modeling magnetohydrodynamics of aluminum electrolysis cells with ANSYS and CFX,” Light Met., pp. 475-480, 2005.

E. I. Shilova and E. V. Shcherbinin, “Control methods MHD convection in the magnesium electrolysis cells,” Magnetohydrodyn., vol. 34, pp. 147-152, 1998.

Z. Sun, H. Zhang, P. Li, B. Li, G. Lu, and J. Yu, “Modeling and simulation of the flow field in the electrolysis of magnesium,” JOM, vol. 61, pp. 29- 33, 2009.

Z. Sun, Z. Yun, G. Lu, P. Li, J. Wang, and J. Yu, “Novel method based on electric field simulation and optimization for designing an energy-saving magnesium electrolysis cell,” Ind. Eng. Chem. Res., vol. 50, pp. 6161-6173, 2011.

C. Liu, Z. Sun, G. Lu, X. Song, and J. Yu, “Scaleup design of a 300 kA magnesium electrolysis cell based on thermo-electric mathematical models,” Can. J. Chem. Eng., vol. 92, pp. 1197-1206, 2014.

S. Das, G. Brooks, and Y. Morsi, “Theoretical investigation of the inclined sidewall design on magnetohydrodynamic (MHD) forces in an aluminum electrolytic cell,” Metall. Mater. Trans. B., vol. 42, pp. 243-253. 2011.

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Published

2021-07-25

How to Cite

[1]
Cheng-Lin Liu, Ze Sun, Gui-Min Lu, Xing-Fu Song, and Jian-Guo Yu, “Effect of Lorentz Force on Motion of Electrolyte in Magnesium Electrolysis Cell”, ACES Journal, vol. 33, no. 02, pp. 184–187, Jul. 2021.

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General Submission