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Metals 2019, 9(3), 309; https://doi.org/10.3390/met9030309

Model Development for Refining Rates in Oxygen Steelmaking: Impact and Slag-Metal Bulk Zones

McMaster Steel Research Centre, Department of Materials Science and Engineering, McMaster University, Hamilton, ON L8S 4L8, Canada
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Received: 22 December 2018 / Revised: 28 February 2019 / Accepted: 2 March 2019 / Published: 8 March 2019
(This article belongs to the Special Issue Ironmaking and Steelmaking)
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Abstract

A new approach has been adopted to predict the contribution of the impact and slag-metal bulk zones to the refining rates of impurities in a top blown oxygen steelmaking process. The knowledge pertaining to the behavior of top-jets and bottom stirring plumes (water model and industrial studies) was adapted. For the impact zone, the surface renewal generated by the top jet as well as bottom stirring plumes is incorporated in the current model, whereas in the case of slag-metal bulk zones the surface renewal is caused solely by the bottom stirring plumes. This approach helped in achieving a more explicit use of process parameters in quantifying the slag formation. The results suggest a minor contribution of these two zones to the overall refining of impurities throughout the oxygen blow. View Full-Text
Keywords: oxygen steelmaking; refining kinetics; slag formation; penetration theory oxygen steelmaking; refining kinetics; slag formation; penetration theory
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Kadrolkar, A.; Dogan, N. Model Development for Refining Rates in Oxygen Steelmaking: Impact and Slag-Metal Bulk Zones. Metals 2019, 9, 309.

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