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Activity of iron oxide in steelmaking slag
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Process Science.
2008 (English)In: Metallurgical and materials transactions. B, process metallurgy and materials processing science, ISSN 1073-5615, E-ISSN 1543-1916, Vol. 39, no 3, 447-456 p.Article in journal (Refereed) Published
Abstract [en]

Most refining reactions in steelmaking involve oxidation of impurity element(s). The product(s) of oxidation either dissolve in the slag or escape as gaseous phase. The activities of oxygen in the metal (h (O)), and that of "FeO" in slag (a (FeO)), are major factors controlling these chemical reactions. The activities of oxygen and "FeO" are thermodynamically related, provided equilibrium distribution of oxygen between the slag and the metal is attained. This enables direct estimation of one parameter from the other. A thorough knowledge of the variation in activity of FeO, and factors affecting the same, is therefore of great importance in the process metallurgy of steelmaking. The present work experimentally measures the activity of FeO in steelmaking slags and attempts to develop a correlation for estimation of gamma(FeO) as a function of temperature and chemical composition of the slag.

Place, publisher, year, edition, pages
2008. Vol. 39, no 3, 447-456 p.
Keyword [en]
liquid-iron, phosphorus partition, free-energy, feo, equilibria, oxygen, steel, mgo, mno
URN: urn:nbn:se:kth:diva-17681DOI: 10.1007/s11663-008-9148-4ISI: 000257592000007ScopusID: 2-s2.0-47249139056OAI: diva2:335726
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Seetharaman, Seshadri
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