The Influence of Adsorbed Al2O3 Inclusions on the Viscosity Behavior of Mould Slag

• Autorzy: Kalisz D. , Kuglin K.

Identyfikatory

DOI

10.24425/afe.2019.127118

• Języki publikacji: EN

Abstrakty

EN

The role of slag in the process of continuous casting of steel (CCS) is reduced to the thermal and chemical insulation of the liquid steel surface, and additionally to refining. The ability to adsorb non-metallic inclusions flowing off from the crystallizer, mainly Al2O3, determines its physicochemical properties. As a result of adsorption and dissolution of inclusions tin he liquid layer the viscosity and thickness of mould flux change, which eventually affects the technological parameters and behavior of slag in the crystallizer. The influence of aluminum oxide on the viscosity of slag was empirically investigated with a structural viscosity model worked out by Nakamoto. The results of the simulation are presented in the form of plots. Authors observed a significant influence of Al2O3 on the slag viscosity, which suggests that this effect should be taken into account when selecting chemical composition of mould flux for definite types of steel. The results of calculations also show that the disturbances in casting caused by the use of the mould slag may be connected with the content of non-metallic inclusions in steel.

Słowa kluczowe

EN

casting of steel; non-metallic inclusion; adsorption; mould slag; viscosity

PL

odlewanie stali; wtrącenia niemetaliczne; adsorpcja; żużel; lepkość

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2019
• Tom: iss. 2
• Strony: 67--74
• Opis fizyczny: Bibliogr. 16 poz., rys., tab., wykr.

Twórcy

autor

Kalisz D.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland

autor

Kuglin K.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland

Bibliografia

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• [2] Reis Silva, D., Heck, N.C., Klug, J., Vilela., A.C.F. (2010). 650 Congresso Annual da ABM –International At: Rio de Janerio, Brazil.
• [3] Bulko, B., Molnar, P., Demeter, P., Baricova, D., Pribulova, A. & Mutas, P. (2018). Study of the Influence of Intermix Condition on Steel Cleanliness. Metals. DOI: 10.3390/met 8100852.
• [4] Hibbeler, L.C., Thomas, B.G. (2013) Mold Slag Entrainment Mechanisms in Continuous Casting Molds, AISTech 2013 Proceedings, 1215-1230.
• [5] Shu, Q., Zhang, X. & Chou, K.C. (2015). Structural viscosity model for aluminosilicate slags. Ironmaking and Steelmaking. 641. DOI: 10.1179/1743281214Y.0000000264.
• [6] Choi, J.Y., Lee, H.G. & Sik. J.K. (2002). Dissolution rate of Al2O3 into molten CaO-SiO2-Al2O3 slags ISIJ International. 42(8), 852-860. DOI: 10.2355/isijinternational 42.852.
• [7] Yu, X., Pomfert, R.J. & Coley, K.S. (1997). Dissolution of alumina in mold fluxes. Metallurgical and Materials Transactions B. 28B, 275-279.
• [8] Cho, J.W., Blazek, K., Frazee, M., Yin, H., Park, J.H., & Moon, S.W. (2013). AISTech 2011. ISIJ International. 53(1), 62-70.
• [9] Zhang, Z., Wen, G., Tang, P. & Sridhari, S. (2008). The influence of Al2O3/SiO2 Ratio on the viscosity of mold fluxes. ISIJ International. 48(6), 739-746. DOI: 10.2355/isijinternational.48.739.
• [10] Huang, X.H., Liao, J.L., Zheng, K., Hu, H.H., Wang, F.M. & Zhang, Z.T. (2014). Effect of B2O3 addition on viscosity of mould slag containing low silica content. Ironmaking & steelmaking. 41, 67-74. DOI.10.1179/1743281213Y0. 0000000107.
• [11] Liao, J., Zhang, Y., Sridhar, S. & Wang, X. (2012). Effect of Al2O3/SiO2 ratio on the viscosity and structure of slag. ISIJ International. 52(5), 753-758.
• [12] Persson, M., Gornerup, M. & Seetharaman, S. (2007). Viscosity measurement of some mould flux slags. ISIJ International. 47(10), 1533-1540. DOI: 10.2355/ isijinternational.47.1533.
• [13] Kim, G.H. & Sohn, I. (2012). Journal of Non-Crystalline Solids 358(12-13), 1530-1537. DOI:10.1016/j.noncrysol. 2012.04.009.
• [14] Nakamoto, M., Miyabayashi, Y., Holappa, L. & Tanaka, T. (2007). A model of estimating viscosities of aluminosilicate melts containing alkali oxides. ISIJ International. 47, 1409-1415.DOI: 10.2355/isijinternational.47.1409.
• [15] Kalisz, D. (2014). Modeling physicochemical properties of mold slag. Archives of Metallurgy and Materials. 59(1), 149-155. DOI: 10.2478/amm-2014-0024.
• [16] Kalisz, D.(2013). Influence of casting mold slag on the progress of casting process. Archives of Metallurgy and Materials. 58(1), 35-41. DOI: 10.2478/v10172-012-0147-8.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019)