کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8004385 1516586 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modelling Effect of Circulation Flow Rate on Inclusion Removal in RH Degasser
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Modelling Effect of Circulation Flow Rate on Inclusion Removal in RH Degasser
چکیده انگلیسی
Based on the similarity principles, a 1 : 7 scale physical model was established to study the behavior of molten steel flow and inclusion removal in a 145 t Rheinsahl-Heraeus (RH) degasser. On the basis of the quantitative measurements of the circulation flow rate and inclusion removal under various lifting gas flow rates, the effect of circulation flow rate on inclusion removal was investigated in the RH degasser. The inclusion removal rate shows the trend of first increase and then decrease twice with increasing the circulation flow rate when the circulation flow rates are smaller than 104. 7 L/min. Whereas, the inclusion removal rate increases again with the further increase in circulation flow rate when the circulation flow rate is larger than 104. 7 L/min. At lower circulation flow rates, inclusions are mainly removed by Stokes flotation to the slag/steel interface after inclusions are transferred near the slag/steel interface by the circulation flow. At higher circulation flow rates, the collision and aggregation of inclusions improves the inclusion removal efficiency. With the further increase in the circulation flow rate, inclusions are mainly removed by following the turbulent fluctuation (turbulent diffusion) to the slag/steel interface after inclusions are transferred near the slag/steel interface by the circulation flow.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Iron and Steel Research, International - Volume 23, Issue 12, December 2016, Pages 1243-1248
نویسندگان
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