University of Oulu

Heikkinen, Eetu-Pekka; Visuri, Ville-Valtteri; Fabritius, Timo (2018) On the heterogeneity of AOD slags in different stages of blowing. In : Proceedings of the 8th European Oxygen Steelmaking Conference. October 10-12, 2018 Taranto, Italy. Article number EOSC007.

On the heterogeneity of AOD slags in different stages of blowing

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Author: Heikkinen, Eetu-Pekka1; Visuri, Ville-Valtteri1; Fabritius, Timo1
Organizations: 1University of Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.5 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2019112844610
Language: English
Published: Associazione Italiana di Metallurgiana, 2018
Publish Date: 2019-11-28
Description:

Abstract

Depending on composition and temperature, pyrometallurgical slags are not always completely molten, but can contain significant amounts of solid phases. These solid phases may be slag forming agents (e.g. lime or doloma) or other added materials that are not yet molten and dissolved into the molten slag phase. Additionally, slag heterogeneity may also be a result of composition and conditions in which some solid phases are thermodynamically stable with the molten phase. The purpose of this study was to study slag heterogeneity in the Argon-Oxygen-Decarburisation (AOD) process while producing austenitic stainless steels. Thermodynamic calculations were used to compute the amounts and compositions of molten and solid phases using slag compositions typical for different stages of the AOD process as initial values. In addition to slag composition, the effect of temperature was also studied.

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ISBN Print: 978-88-98990-16-0
Article number: EOSC007
Host publication: Proceedings of the 8th European Oxygen Steelmaking Conference. October 10-12, 2018 Taranto, Italy
Conference: European Oxygen Steelmaking Conference
Type of Publication: B3 Article in conference pro-ceedings
Field of Science: 215 Chemical engineering
Subjects:
Funding: This study was conducted within the framework of the Genome of Steel profilation. V.-V. Visuri thanks Finnish Cultural Foundation for his financial support.
Copyright information: © 2018 The Authors and Associazione Italiana di Metallurgiana. Published in this repository with the kind permission of the publisher.