DEVELOPMENT OF A MODEL OF THE INTERACTION PROCESS OF THE COMPONENTS OF A TWO-PHASE FLOW INTRODUCED INTO CAST IRON DURING INJECTION DESULFURIZATION
DOI:
https://doi.org/10.34185/1991-7848.itmm.2025.01.056Keywords:
reagent, particle, model, immersion, magnesium, lime.Abstract
Actual results of the industrial application of out-of-furnace desulfurization indicate that practical results of the technology in many cases are not sufficiently stable. The studies were conducted on computational and "cold" physical models. Magnesium, ground lime, calcium carbide - desulfurizing reagents. Based on the actual results of physical modeling and further calculations, improved expression was formulated for calculating the depth of jet immersion depending on the parameters of the injection lance. It is shown that during injection desulfurization of cast iron, the gas component of the flow stops its directional movement in the melt up to 80 mm (actually 50-60 mm), solid particles continue to move in the cavity and hit the surface of this cavity. To assess further movement of the particle through the "gas cavity-melt" boundary, model was developed to determine the depth of immersion of reagent particlesas a function of the injection velocity of the two-phase flow.
References
Voronova, N. A. (1983). Desulfurization of Hot Metal by Magnesium; Publisher. Iron & Steel Society; Publication date. January 1, 1983. [in Russian]
Robey, R. And etc. (2014). Out-of-blast processing of cast iron, taking into account specific production conditions. MPT International, 1, 16-24 [in Russian].
Molchanov, L., Nizyaev, K., Boychenko, B., Stoyanov, A., Synehin, Ye. (2013). Ladle desulphurization of liquid iron in context of the tasks of national industry. New Materials and Technologies in Metallurgy and Mechanical Engineering, 2, 38-41 [in Ukrainian].
A. M. Zborshchik, S. V. Kuberskii, K. E. Pismarev, V. V. Akulov & G. Ya. Dovgalyuk (2010). Comparison of ladle technologies for hot-metal desulfurization. Steel Transl., 40, 35–37 https://doi.org/10.3103/S0967091210010092
A. F. Shevchenko, A. M. Bashmakov, A. S. Vergun, I. A. Manachin, V. G. Kislyakov, É. A. Trotsenko, Liu Dong Yie & Yang Jia Rui. (2019). Modern High-Performance Complexes of Extra-Deep Desulphurization of Cast iron by Mono-Injection of Magnesium. Metallurgist, 62, 965–973. https://doi.org/10.1007/s11015-019-00734-w.
Tovarovskii, I. G. (2014). Influence of blast-furnace parameters on coke consumption and productivity. Steel Transl., 44, 350–358. https://doi.org/10.3103/S0967091214050155.
Vergun, A. S., Shevchenko, A. F., Kislyakov, V. G., Molchanov, L. S., Dvoskin, B. V. (2019). Sulphur and gas removal from hot metal by injecting disperse magnesium in a gas jet. Steel in translation, 49(1), 45-49. https://doi.org/10.3103/S0967091219010133
Lindström, D., Nortier, P., Sichen, D. (2014). Functions of Mg and Mg–CaO Mixtures in Hot Metal Desulfurization. Steel Research International, 85(1), 76–88. https://doi.org/10.1002/srin.201300071.
Shevchenko, Manachin I.A., Vergun A.S., Dvoskin B.V., Kislyakov V.G., Shevchenko S.A., Ostapenko A.V. (2017). Out-of-furnace desulphurisation of cast iron in ladles. Technology, research, analysis, improvement. Publisher. Dnipro-VAL; Publication date. Jule 25, 2017; ISBN 978-966-8704-75-8 [in Russian]. Що це за джерело?
Rudenko, A. L. (2014). The analysis of patterns of interphase sulfur distribution in the injection treatment of iron with magnesium. Izvestiya. Ferrous Metallurgy, 57(8), 13-18. https://doi.org/10.17073/0368-0797-2014-8-13-18 [in Russian].
Rudenko, A. L. (2016). Kinetics of interfacial transition of sulfur during ladle refining of iron by magnesium. Izvestiya. Ferrous Metallurgy, 59(12), 896-902. ). [in Russian]..
Frank Nicolaas Hermanus Schrama, Elisabeth Maria Beunder, Bart Van den Berg, Yongxiang Yang & Rob Boom (2017). Sulphur removal in hot metalmaking and oxygen steelmaking. Hot metalmaking & Steelmaking, 44(5), 333-343. https://doi.org/10.1080/03019233.2017.1303914.
A. M. Zborshchik, S. V. Kuberskii, G. Ya. Dovgalyuk & K. V. Vinnik. (2011). Effectiveness of fluidized lime in the desulfurization of hot metal in 300-t casting ladles. Steel Transl., 41, 741–744. https://doi.org/10.3103/S096709121109021X
Zborshchik, A. M., Kuberskii, S. V., Dovgalyuk, G. Y. & V.N. Belomerya. The Efficiency of Using Fluidized Lime for Desulfurization of Iron in 300-Ton Charging Ladles. Scientific papers of Donetsk National Technical University. Series: Metallurgy, 13(194), 53-60. https://ea.donntu.edu.ua:8080/jspui/handle/123456789/14635
