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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/43419
- Title
- Kinetics of metal/slag reactions during spontaneous emulsification
- Author(s)
- Rhamdhani, Muhammad A.; Brooks, Geoffrey; Coley, Ken S.
- Abstract
- An approach for accommodating the interfacial area changes in kinetic equations for heterogeneous reactions in the presence of spontaneous emulsification has been proposed. The kinetics were analyzed by incorporating time-averaged interfacial areas in the rate equations. The approach was found to be applicable for the experimental data and to satisfactorily describe the reaction kinetics. In the case of a high-temperature reaction between 2.35 g Fe-5 wt pet Al alloy metal droplets with CaO-SiO2-Al 2O3 slag at 1650°C, it was found that the kinetics follow a first-order relationship with respect to aluminum in the metal, and it was concluded that they were controlled by mass transport in the metal phase. The calculated metal mass-transfer coefficient km was 1.7 × 10-6 m/s.
- Publication type
- Journal article
- Source
- Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, Vol. 36, no. 2 (Apr 2005), pp. 219-227
- Publication year
- 2005
- Keyword(s)
- Aluminum; Diffusion; High temperature applications; Mass transfer; Reaction kinetics; Slags; Stoichiometry; Surface tension; Interfacial area; Mass transfer coefficients; Rate equations; Steady-state diffusion; Emulsification
- Publisher
- Springer
- ISSN
- 1073-5615
- Publisher URL
- http://dx.doi.org/10.1007/s11663-005-0023-2
- Copyright
- Copyright © 2005 The Minerals, Metals and Materials Society and ASM International.
- Peer reviewed
