In situ studies of agglomeration between Al2O3-CaO inclusions at metal/gas, metal/ slag interfaces and in slag

J. Wikström, K. Nakajima, Hiroyuki Shibata, A. Tilliander, P. Jönsson

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Studies of inclusion behaviour at the metal/slag interface is of great importance for the steel industry in order to achieve better control of both the size and amount of the inclusions, as well as improving the steel quality and the casting process. In this work agglomeration of liquid Al2O 3-CaO particles at both steel/argon gas and steel/slag interfaces was studied with a confocal scanning laser microscope. In addition, agglomeration of liquid Al2O3-CaO-SiO2 inclusions present in the slag was investigated. The results showed that liquid inclusions more easily agglomerated to semiliquid inclusions than to liquid inclusions. Moreover, the agglomeration of liquid particles was found to be improved remarkably when the particles were present in the slag compared to when they were in the steel/slag interface.

Original languageEnglish
Pages (from-to)589-599
Number of pages11
JournalIronmaking and Steelmaking
Issue number8
Publication statusPublished - 2008 Nov 1


  • Agglomeration
  • Capillary force
  • In situ experiments
  • Inclusions
  • Metal/slag interface

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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