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Title

Characterisation of interfacial phenomena in metal-slag reactions

Author(s)

Rhamdhani, M. A.;  Brooks, Geoffrey A.;  Nightingale, S. A.

Abstract

During reaction between metal droplets and slag, spontaneous emulsification has been observed. These phenomena have a significant effect on the kinetics of the reactions since they increase the interfacial area. In certain cases, the increase in interfacial area can exceed 300% of the original value. In the case of an Fe-Al droplet reacting with CaO-SiO2-Al2O3 slag, the composition and distribution of aluminum and silicon are important in analyzing the kinetics of the reaction. Energy-dispersive x-ray analysis (EDX) has been used for the investigation of the Al and Si distribution in recovered metal droplets. A 'wall effect' and cavities were observed in some of the droplets. The wall effect maybe significant in explaining the existence of surface tension gradients that result in emulsification of the droplets.

Publication type

Conference paper

Source

Proceedings of the International Symposium on Metal/Ceramic Interactions, held as part of the 41st Annual Conference of Metallurgists of CIM (COM 2002), Montreal, Quebec, Canada, 11-14 August 2002 / R. A. L. Drew, M. D. Pugh and M. Brochu (eds.), pp. 303-313

Publication year

2002

Keyword(s)

Energy-dispersive x-ray analysis;  Kinetics;  Metal droplets;  Slag

Publisher

Canadian Institute of Mining, Metallurgy and Petroleum

ISBN

9781894475242, 1894475240

Publisher URL

http://www.cim.org/

Copyright

Copyright © 2002 the Canadian Institute of Mining, Metallurgy and Petroleum. The published version is reproduced with the kind permission of the publisher.

Full text

Peer reviewed