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

doi:10.1179/174328108X284589

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

Division of Process and System Engineering

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	589-599
Number of pages	11
Journal	Ironmaking and Steelmaking
Volume	35
Issue number	8
DOIs	https://doi.org/10.1179/174328108X284589
Publication status	Published - 2008 Nov 1

Keywords

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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abstract = "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.",

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AU - Wikström, J.

AU - Nakajima, K.

AU - Shibata, Hiroyuki

AU - Tilliander, A.

AU - Jönsson, P.

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