J 2019

THE INFLUENCE OF PARAMETERS OF ARGON PURGING PROCESS THROUGH LADLE ON THE PHENOMENA OCCURING IN THE AREA OF PHASE DISTRIBUTIONS: LIQUID STEEL-SLAG

PIEPRZYCA, Jacek, Tomasz MERDER, Mariola SATERNUS, Karel GRYC, Ladislav SOCHA et. al.

Basic information

Original name

THE INFLUENCE OF PARAMETERS OF ARGON PURGING PROCESS THROUGH LADLE ON THE PHENOMENA OCCURING IN THE AREA OF PHASE DISTRIBUTIONS: LIQUID STEEL-SLAG

Name in Czech

VLIV PARAMETRŮ PROCESU ARGONOVÉHO NÁKUPU PROSTŘEDNICTVÍM FENOMÉNU V OBLASTI FÁZOVÝCH DISTRIBUCÍ: KVAPALNÁ OCELOVÁ STRUSKA

Authors

PIEPRZYCA, Jacek (616 Poland, guarantor), Tomasz MERDER (616 Poland), Mariola SATERNUS (616 Poland), Karel GRYC (203 Czech Republic, belonging to the institution) and Ladislav SOCHA (203 Czech Republic, belonging to the institution)

Edition

ARCHIVES OF METALLURGY AND MATERIALS, Polsko, POLSKA AKAD NAUK, POLISH ACAD SCIENCES, INST METALL & MATER SCI PAS, PL, 00-901 WARSZAWA, POLAND, 2019, 1733-3490

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

20501 Materials engineering

Country of publisher

Poland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

RIV identification code

RIV/75081431:_____/19:00001662

Organization unit

Institute of Technology and Business in České Budějovice

UT WoS

000473163500037

Keywords (in Czech)

výroba oceli; naběračka; struska; fyzikální modelování; proudění tekutin; KŘIVKY RTD; ROZPTYL; MODEL

Keywords in English

steelmaking; ladle; slag; physical modelling; FLUID-FLOW; RTD CURVES; DISPERSION; MODEL

Tags

Změněno: 22/4/2020 14:05, Ing. Anna Palokha

Abstract

V originále

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.