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Studies of dynamic mass transfer at the slag-metal interface - Interfacial velocity measurements

DSpace at IIT Bombay

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Title Studies of dynamic mass transfer at the slag-metal interface - Interfacial velocity measurements
 
Creator MUHMOOD, L
VISWANATHAN, NN
SEETHARAMAN, S
 
Subject Interfacial phenomena
Interfacial velocity
Oxygen
Interfacial tension
DENSITY
SYSTEMS
TENSION
SURFACE
OXYGEN
MODEL
IRON
 
Description The dynamics of oxygen transport along the slag-metal interface of pure iron and alumina-saturated CaO-Al2O3-SiO2 slag was studied using high-temperature X-ray image analysis. The oscillations of the metal drop occurring due to the interfacial movement of oxygen atoms driven by Marangoni forces were studied in detail. The change in interfacial area during the oscillations was measured using a digitizing software and MATLAB. It was observed that the interfacial velocity as a function of oxygen exhibits insignificant variation with temperature. Further, the values obtained for the interfacial velocity using oxygen concentration difference at the interface were slightly lower in comparison to those using sulfur. The possible reason for this lower velocity could be that, although oxygen is a smaller atom compared to that of sulfur, the energy barrier at the free iron surface is higher for oxygen, thus hindering its motion along the interface.
 
Publisher CARL HANSER VERLAG
 
Date 2014-10-15T15:20:55Z
2014-10-15T15:20:55Z
2012
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 103(7)875-883
http://dx.doi.org/10.3139/146.110705
http://dspace.library.iitb.ac.in/jspui/handle/100/15138
 
Language en