The Influence of Parameters of Argon Purging Process Through Ladle on the Phenomena Occuring in the Area of Phase Distributions: Liquid Steal-Slag

• Autorzy: Pieprzyca J. , Merder T. , Saternus M. , Gryc K. , Socha L.

Identyfikatory

DOI

10.24425/amm.2019.127594

• Języki publikacji: EN

Abstrakty

EN

Purging the liquid steel with inert gases is a commonly used treatment in secondary metallurgy. The main purposes for which this method is used are: homogenization of liquid steel in the entire volume of the ladle, improvement of mixing conditions, acceleration of the absorption process of alloy additives and refining of liquid steel from non-metallic inclusions. The basic processing parameters of this treatment are: gas flow rate and the level of gas dispersion in liquid steel. The level of gas dispersion depends on the design and location of the porous plug in the ladle. Therefore, these parameters have a significant impact on the phenomena occurring in the contact zone of liquid steel with slag. Their improper selection may cause secondary contamination of the bath with exogenous inclusions from the slag, or air atmosphere due to discontinuity of the slag and exposure of the excessive surface of the liquid steel free surface. The article presents the results of modelling research of the effect of liquid steel purging with inert gases on phenomena occurring in this zone. The research was carried out using the physical (water) model of steel ladle. As a modelling liquid representing slag, paraffin oil was used, taking into account the conditions of similarity with particular reference to the kinematic viscosity. The results of the conducted research were presented in the form of visualization of phenomena occurring on the surface of the model liquid free surface in the form of photographs. The work is a part of a bigger study concerning modelling of ladle processes.

Słowa kluczowe

EN

steelmaking; ladle; slag; physical modelling

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 2
• Strony: 653--658
• Opis fizyczny: Bibliogr. 32 poz., fot., rys., tab., wzory

Twórcy

autor

Pieprzyca J.

• Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, 8 Krasińskiego Str.,40-019 Katowice, Poland

autor

Merder T.

• Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, 8 Krasińskiego Str.,40-019 Katowice, Poland

autor

Saternus M.

• Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, 8 Krasińskiego Str.,40-019 Katowice, Poland

autor

Gryc K.

• The Institute of Technology and Business in Českè Budejovice, Faculty of Technology, Okružni 517/10, Českè Budejovice, Czech Republic

autor

Socha L.

• The Institute of Technology and Business in Českè Budejovice, Faculty of Technology, Okružni 517/10, Českè Budejovice, Czech Republic

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Uwagi

EN

1. This paper was created with the financial support of Polish Ministry for Science and Higher Education under internal grant BK221/RM0/2018 for Faculty of Materials Engineering and Metallurgy, Silesian University of Technology, Poland.

PL

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