Materials Science and Engineering

Recent observations on the kinetics of reactions with bloated metal droplets

December 01, 2017

11:30 a.m.

Doherty Hall 2210

Dr. Kenneth S. Coley
McMaster Steel Research Centre
The Department of Materials Science and Engineering, McMaster University


The term “bloated droplet” was first coined by researchers in the speaker’s laboratory at McMaster University. However, the concept was inspired by the research of Molleseau and Fruehan at Carnegie Mellon. Bloated droplets are important in modeling oxygen steelmaking, where droplet swelling or bloating ensures sufficient contact between droplets and slag. This is particularly important in ensuring adequate slag metal contact for dephosphorisation.

The lecture will briefly review the significance of bloated metal droplets, and present recent work on the kinetics of dephosphorisation. These results will be used in discussion of the interaction between decarburization and dephosphorisation, and in drawing conclusions regarding mass transport in reactions with bloated droplets. Finally the speaker will offer some general insights into mass transfer in slag metal reactions.


Dr. Kenneth S. Coley is The ArcelorMittal Dofasco Professor of Ferrous Metallurgy and Director of the McMaster Steel Research Centre in The Department of Materials Science and Engineering at McMaster University. Dr. Coley’s research focus is in reaction kinetics, mostly related to steel processing although he has also worked in non-ferrous process metallurgy as well as corrosion. Dr. Coley is a Fellow of The Canadian Institute of Mining Metallurgy and Petroleum (CIM) and a Past President of The Metallurgical Society of CIM. Dr. Coley earned his B.Sc. degree in Metallurgy from the University of Strathlyde, Glasgow and his Ph,D from Imperial College, London. He is registered as a Professional Engineer in Ontario (P.Eng.) and a Chartered Engineer (C.Eng.) in the UK.

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