Abstract
A water model has been applied to investigate initial bubble behavior using specially-coated samples of porous MgO refractory to simulate the high-contact angle of steel-argon refractory systems with different permeabilities. Air is injected through the porous refractory and travels through many inter-connected pores to exit the surface through “active sites”. An active site is a pore where bubbles exit from the surface of the porous refractory. The effect of refractory properties has been investigated in both stagnant and downward-flowing water. The number of active sites increases with increasing gas injection flow rate, permeability, and velocity of the downward-flowing water, and lower contact angle.
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Lee, GG., Thomas, B.G. & Kim, SH. Effect of refractory properties on initial bubble formation in continuous-casting nozzles. Met. Mater. Int. 16, 501–506 (2010). https://doi.org/10.1007/s12540-010-0601-y
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DOI: https://doi.org/10.1007/s12540-010-0601-y