|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||8th International Symposium on High Temperature Metallurgical Processing
||Kinetics of Dephosphorization between Bloated Metal Droplet and Slag Containing Iron Oxide
||Kezhuan Gu, Kenneth S. Coley, Neslihan Dogan
|On-Site Speaker (Planned)
A detailed study on dephosphorization kinetics is important for better understanding the role of bloated metal droplet in refining reactions during oxygen steelmaking. In present work, dephosphorization behavior of droplets with 0.007wt% and 0.021wt% sulfur were studied using X-ray fluoroscopy technique at temperature ranging from 1813K to 1913K. The experiment results indicated that dephosphorization of metal droplets in foaming slag is slower than it in dense slag due to the lower mass transfer coefficient of FeO and the small liquid slag volume in the foam. It was also suggested that internal decarburization offers a higher mass transfer coefficient due to the faster surface renewal rate, leading to a higher dephosphorization rate. In addition, dephosphorization behavior for droplets without carbon was also investigated to elucidate the effect of CO bubble formation on dephosphorization kinetics.
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