Effect of Swirl Angle on Interaction between Swirl Oxygen Lance Jet and Melt Pool

• Autorzy: Ma Haoran , Liu Guangqiang , Xu Chengcheng , Liu Kun , Han Peng

Identyfikatory

DOI

10.24425/afe.2024.149251

• Języki publikacji: EN

Abstrakty

EN

In order to clarify the action law of the swirl oxygen lance jet on the melt pool of the converter and to determine the optimal swirl angle of the swirl oxygen lance for the 120t converter, this study establishes the gas-liquid two-phase flow model of the oxygen lance with different swirl angles based on the realizable k-ε model and the VOF multiphase flow model. The gas-liquid interface behavior during the interaction between the jet and the molten pool was analyzed, and the flow pattern of molten steel in the molten pool was mainly investigated. The results show that compared with traditional oxygen lance, the rotating oxygen lance jet enhances the stirring of the melt pool and intensifies the fluctuation of the melt pool liquid level. The depth of the impact cavity decreases with the increase of the swirl angle, but the diameter of the impact cavity increases with the increase of the swirl angle. When the jet with a swirl angle of 10° impacts the surface of the melt pool, the turbulence energy obtained by the molten steel is the highest, the average flow velocity inside the melt pool is the highest, and the molten steel is stirred more thoroughly, achieving better melting effects.

Słowa kluczowe

EN

oxygen lance jet; swirl oxygen; gas-liquid interface; dead zone; flow model

PL

strumień lancy tlenowej; interfejs gaz-ciecz; martwa strefa; model przepływu

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2024
• Tom: Vol. 24, iss. 1
• Strony: 50--57
• Opis fizyczny: Bibliogr. 20 poz., il., tab., wykr.

Twórcy

autor

Ma Haoran

• University of Science and Technology Liaoning, College of Materials and Metallurgy, Anshan, China

autor

Liu Guangqiang

• University of Science and Technology Liaoning, College of Materials and Metallurgy, College of Civil Engineering, Anshan, China

autor

Xu Chengcheng

• ANGANG Steel Company Limited, Anshan, China

autor

Liu Kun

• University of Science and Technology Liaoning, College of Materials and Metallurgy, Anshan, China

autor

Han Peng

• University of Science and Technology Liaoning, College of Materials and Metallurgy, Anshan, China

Bibliografia

• [1] Rao, J.P., Li, G.Q., & Yang, Z.Z. (2011). Research and application of new oxygen lance for BOF steelmaking. Advanced Materials Research. 335, 74-79. https://doi.org/10.4028/www.scientific.net/AMR.335-336.74.
• [2] Allemand, B., Bruchet P. & Champinot, C. (2001). Theoretical and experimental study of supersonic oxygen jets. Industrial application in EAF. Metallurgical Research & Technology. 98(6), 571-587. https://doi.org/10.1051/ metal:2001107.
• [3] Li, L., Li, M. & Shao, L. (2020). Physical and mathematical modeling of swirling gas jets impinging onto a liquid bath using a novel nozzles‐twisted lance. Steel Research International. 91(7), 54-60. https://doi.org/10.1002/ srin.201900684.
• [4] Wang, X. (2022). Numerical simulation of jet characteristics and gas liquid two phase behavior of swirling oxygen lance. University of Science and Technology Liaoning. https://doi.org/10.26923/d.cnki.gasgc.2021.000081.
• [5] Higuchi, Y. & Tago, Y. (2003). Effect of nozzle twisted lance on jet behavior and spitting rate in top blown process. ISIJ international. 43(9), 1410-1414. https://doi.org/10.2355 /isijinternational.43.1410.
• [6] Li, M., Li, Q. & Kuang, S. (2016). Computational investigation of the splashing phenomenon induced by the impingement of multiple supersonic jets onto a molten slag-metal melt pool. Industrial & Engineering Chemistry Research. 55(12), 3630-3640. https://doi.org/10.1021/ acs.iecr.5b03301.
• [7] Li, Q., Li, M. & Kuang, S, B. (2014). Computational study on the behaviours of supersonic jets and their impingement onto molten liquid free surface in BOF steelmaking. Canadian Metallurgical Quarterly. 53(3), 340-351. https://doi.org/10.1179/1879139514Y.0000000124.
• [8] Li, M., Li, Q. & Zou Z. (2017). Computational investigation of swirling supersonic jets generated through a nozzle twisted lance. Metallurgical and Materials Transactions B. 48, 713-725. https://doi.org/10.1007/s11663-016-0851-2.
• [9] Muñoz-Esparza, D., Buchlin, J.M. & Myrillas, K. (2012). Numerical investigation of impinging gas jets onto deformable liquid layers. Applied Mathematical Modelling. 36(6), 2687-2700. https://doi.org/10.1016/j.apm.2011.09.052.
• [10] Zhou, X., Ersson, M. & Zhong, L. (2014). Mathematical and physical simulation of a top blown converter. Steel research international. 85(2), 273-281. https://doi.org/10.1002/ srin.201300310.
• [11] Hu, S., Zhu, R., & Dong, K. (2018). Effect of oxygen flow rate and temperature on supersonic jet characteristics and fluid flow in an EAF molten bath. Canadian Metallurgical Quarterly. 57(2), 219-234. https://doi.org/10.1080/00084433. 2017.1409945.
• [12] Wang, W., Yuan, Z., & Matsuura, H. (2010). Three dimensional compressible flow simulation of top-blown multiple jets in converter. ISIJ International. 50(4), 491-500. https://doi.org/10.2355/isijinternational.50.491.
• [13] Li, M., Li, L. & Zhang, B. (2020). Numerical analysis of the particle-induced effect on gas flow in a supersonic powder laden oxygen jet. Metallurgical and Materials Transactions B. 51, 1718-1730. https://doi.org/10.1007/s11663-020- 01855-3.
• [14] Feng, C., Zhu, R. & Dong, K. (2021). Effects of ambient temperature and powder gas ratio on jet characteristics of O2+ CO2 and CaO particles injected by a swirl-type oxygen lance nozzle. Powder Technology. 388, 537-553. https://doi.org/10.1016/j.powtec.2021.04.085.
• [15] Lv, M., Zhu, R. & Wang H. (2013). Simulation and application of swirl-type oxygen lance in vanadium extraction converter. Steel Research International. 84(3), 304-312. https://doi.org/10.1002/srin.201200136.
• [16] Lv, M., Zhu, R. & Guo, Y.G. (2013). Simulation of flow fluid in the BOF steelmaking process. Metallurgical and Materials Transactions B. 44, 1560-1571. https://doi.org/10.1007/ s11663-013-9935-4.
• [17] Alam, M., Naser, J., & Brooks, G. (2010). Computational fluid dynamics simulation of supersonic oxygen jet behavior at steelmaking temperature. Metallurgical and Materials Transactions B. 41, 636-645. https://doi.org/10.1007/s11663- 010-9341-0.
• [18] Liu, F., Sun, D. & Zhu, R. (2017). Effect of nozzle twisted oxygen lance on flow field and dephosphorization rate in converter steelmaking process. Iron making & Steelmaking. 44(9), 640-648. https://doi.org/10.1080/03019233. 2016.1226562.
• [19] Zhong, L., Zhu, Y. & Jiang, M. (2005). Cold modelling of slag splashing in LD furnace by oxygen lance with twisted nozzle tip. Steel Research International. 76(9), 611-615. https://doi.org/10.1002/srin.200506065.
• [20] Liu, G., Liu, K., & Han, P. (2021). Splash sheet characteristics induced by the impingement of multiple jets in a steelmaking converter. Ironmaking & Steelmaking. 48(1), 25-32. https://doi.org/10.1080/03019233.2020.1720453.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024)