Separation of alumina inclusions across interfaces between molten steel and ladle-, tundish-, and mold-slags

G. N. Shannon, S. Sridhar

Research output: Contribution to conferencePaperpeer-review

Abstract

A previously introduced model of inclusions separating across a steel-slag interface, developed by Nakajima/Okamura and Bouris/Bergeles, is expanded to include different inclusions shapes (octahedral and plate-like, besides spherical) as well as comparison between model ladle-, tun-dish-, and mold-slags. Investigation of the relation of these shapes with the interfacial capillary force - which arises due to the dynamic interfacial energy during separation - has shown that the force has a significant effect on whether the inclusion separates rapidly or settles at the interface. For the slags considered, the most significant physical property is found to be viscosity, which resulted in fast separation times for inclusions in the mold and ladle slags, relative to the more viscous tundish slag. Particle dissolution (using experimental data) is included in separation modeling.

Original languageEnglish (US)
Pages307-318
Number of pages12
StatePublished - 2005
Externally publishedYes
Event2005 TMS Annual Meeting - San Francisco, CA, United States
Duration: Feb 13 2005Feb 17 2005

Other

Other2005 TMS Annual Meeting
Country/TerritoryUnited States
CitySan Francisco, CA
Period2/13/052/17/05

Keywords

  • Capillary force
  • Inclusions
  • Interfacial energy
  • Modeling
  • Particle flotation
  • Particle separation
  • Slag

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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