| The floating behavior of non-metallic inclusion and flew pattern of molten steel in continuous casting tundish was studied in respect of chemical reaction engineering. Water model experiment was done in the range of flow rate without surface turbulence (high flow rate) and stagnant zone (low flow rate) in model tundish. In case of no dam, the flow pattern of tundish which was analysed by R. T. D-curve was nearly perfect mixed flow and removal efficiency of inclusion was expressed well as first-order reaction equation of mixed flow reactor: (수식) In case of dam owing to the increased dispersed plug flow volume of tundish, removal efficiency of inclusion was more excellent than that of no dam, and expressed well as first-order reaction equation of mixed model : (수식) It is evident that the use of dam was more effective for promoting the floating removal of inclusion than that of no dam, because dam increased the dispersed plug flow in tundish. It is well agreed to the fact of chemical reaction engineering that the more plug flow volume system (tundish) has, the more conversion (floating removal of inclusion) occurs in system (tundish). |
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