Modeling and experiment of slag corrosion on the lightweight alumina refractory with static magnetic field facing green metallurgy

Abstract

Electromagnetic field is applied widely in metallurgy and other high temperature processes, and affects the behavior of melts. The lightweight alumina based carbon free refractory is of importance for energy-saving, consumption reduction and high quality steel production, and the slag corrosion resistance is significant concerning its service life. Does electromagnetic field control the slag corrosion behavior on the lightweight alumina refractory? In this paper, a multi-field coupled model was established to describe the slag corrosion process in an electromagnetic field. The mathematical modeling in combination of experiments was applied to clarify slag corrosion behavior of lightweight alumina refractory in static magnetic field. The simulation results agree with that of the experiments, which means the proposed model is promising for slag corrosion modeling. The results show that the combination of the slag properties change, and electromagnetic damping caused by MHD (magnetohydrodynamics) effect can enhance the slag corrosion resistance by inhibiting slag penetration and promoting formation of a directional isolation layer, and be beneficial to high-quality clean steel production.

Design, fabrication and properties of lightweight wear lining refractories: A review

“…However, the slag resistance of lightweight refractories was improved using a static magnetic field. Huang et al assessed the slag resistance performance of lightweight alumina−magnesia castable under a static magnetic field, and the effect of magnetic strength was investigated [143]. With an increase in the magnetic induction intensity, the viscosity and contact angle of slag subsequently increased.…”

Corrosion resistance and anti‐reaction mechanism of Al2O3‐based refractory ceramic under weak static magnetic field

“…Recently, Huang and coworkers 14,15 demonstrated that alternating magnetic fields aggravate the corrosion of the refractory, but in contrast, the 'electromagnetic damping' effect of a static magnetic field can effectively inhibit the slag corrosion of refractories. However, 'electromagnetic damping' is not the only reason why a weak static magnetic field hinders the interaction between the refractory ceramic and slag melt.…”

Mathematical Simulation and Physical Modeling of Self-Source Magnetization by Liquid Electrolyte Flow

“…The charge forms a current flow under the action of electrostatic field conduction, the charge concentration difference in the solution, and the flow effect generated by the solution flow. The electromagnetic field has an important influence on the distribution of inclusions in molten steel, the distribution of electromagnetic sensitive elements such as Fe and Mn in slag, the viscosity of slag and the degree of wetting with refractory materials [7][8][9].…”