1 MODELING MODELING OF OF SURFACE PROPERTIES SURFACE PROPERTIES OF OF METALLURGICAL METALLURGICAL SOLUTIONS: SOLUTIONS: STEELS, STEELS, SLAGS SLAGS AND AND STEEL-SLAG STEEL-SLAG SYSTEMS SYSTEMS Jerzy Iwanciw, Krzysztof Pytel, Elżbieta Kawecka- Cebula, Magdalena Kostołowska Faculty of Metals Faculty of Metals Eng Eng ineering ineering & Industrial Comp & Industrial Comp . . Science, Science, AGH University of AGH University of Science and Technology Science and Technology
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1 MODELING OF SURFACE PROPERTIES OF METALLURGICAL SOLUTIONS: STEELS, SLAGS AND STEEL-SLAG SYSTEMS Jerzy Iwanciw, Krzysztof Pytel, Elżbieta Kawecka-Cebula,
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SLAGS SLAGS ANDAND STEEL-SLAG STEEL-SLAG SYSTEMS SYSTEMS
Jerzy Iwanciw, Krzysztof Pytel, Elżbieta Kawecka-Cebula, Magdalena Kostołowska Faculty of Metals Faculty of Metals EngEngineeringineering & Industrial Comp& Industrial Comp.. Science,Science,
AGH University of AGH University of Science and Technology Science and Technology at Krakowat Krakow
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Importance of Surface Properties in Iron Metallurgy Phenomena
• Removal of inclusions from molten metal • Slag spreading on metal (work of adhesion)• Filtration of metals (work of adhesion)• Slag penetration into refractory
Conclusions• The surface tension of the iron solutions (steels) and metal-slag
interfacial tension is affected mainly and non-linearly by such intensive surfactants like oxygen and sulphur.
• When the oxygen content is below 5 ppm, the sulphur dominantly determines the surface tension quantity.
• As to the slag solutions it was found that - for pure oxides - the highest surface tension levels exhibit the alkali oxides like CaO, MgO, MnO, FeO and Cr2O3 .
• The interfacial tension for metal/slag systems is predominantly set by the metal phase while the effect of the slag phase is secondary.
• Further progress in modeling of the surface properties for metallurgical systems depends to much extent on a supply of new, more precise experimental surface and interfacial tensions data to fill the lacking gaps.
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Thank you for
your attention
The study was sponsored by KBN Grant No 3 T08B 023 28