|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Materials Processing Fundamentals
||Study on Evolution of Inclusions in Tinplate Production during RH Refining - Continuous Casting Process
||Xiaoao Li, Nan Wang
|On-Site Speaker (Planned)
The evolution behaviors of type, amount, and size of inclusions in tinplate were studied by industrial experiments and thermodynamic calculations from RH refining to continuous casting process. The results indicated that Al2O3 inclusions were generated at first after Al addition. The inclusions varied with the route as Al2O3 inclusions→CaO-Al2O3 system inclusions→CaO-MgO-Al2O3+(CaS) system inclusions and Al2O3 inclusions→MgO-Al2O3 spinel inclusions→CaO-MgO-Al2O3+(CaS) system inclusions. The amount of inclusions per unit area showed an increase trend from RH refining to tundish. The size change of inclusions caused by secondary oxidation was mainly less than 10 μm, the proportion of inclusions with size less than 5 μm decreased and inclusions in the range of 5~10 μm increased. In order to obtain the inclusions with low melting point, the reasonable C/A mass ratio of the final RH slag is 1.10 through theoretical calculations.