University of Oulu

Visuri, VV., Järvinen, M., Kärnä, A. et al. Metall and Materi Trans B (2017). doi:10.1007/s11663-017-0960-6

A mathematical model for reactions during top-blowing in the AOD process : derivation of the model

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Author: Visuri, Ville-Valtteri1; Järvinen, Mika2; Kärnä, Aki1;
Organizations: 1Process Metallurgy Research Unit, University of Oulu, PO Box 4300, 90014 University of Oulu, Finland
2Department of Mechanical Engineering, Aalto University, PO Box 14440, 00076 Aalto, Finland
3Outokumpu Stainless Oy, 95490 Torne, Finland
Format: article
Version: accepted version
Access: embargoed
Persistent link: http://urn.fi/urn:nbn:fi-fe201704246239
Language: English
Published: Springer Nature, 2017
Publish Date: 2018-03-27
Description:

Abstract

In an earlier work, a fundamental mathematical model was proposed for side-blowing operation in the argon–oxygen decarburization (AOD) process. The purpose of this work is to present a new model, which focuses on the reactions during top-blowing in the AOD process. The model considers chemical reaction rate phenomena between the gas jet and the metal bath as well as between the gas jet and metal droplets. The rate expressions were formulated according to a law of mass action-based method, which accounts for the mass-transfer resistances in the liquid metal, gas, and slag phases. The generation rate of the metal droplets was related to the blowing number theory. This paper presents the description of the model, while validation and preliminary results are presented in the second part of this work.

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Series: Metallurgical and materials transactions. B, Process metallurgy and materials processing science
ISSN: 1073-5615
ISSN-E: 1543-1916
ISSN-L: 1073-5615
Volume: 48
Issue: 3
Pages: 1850 - 1867
DOI: 10.1007/s11663-017-0960-6
OADOI: https://oadoi.org/10.1007/s11663-017-0960-6
Type of Publication: A1 Journal article – refereed
Field of Science: 215 Chemical engineering
Subjects:
Funding: The funding for this work from Outokumpu Stainless Oy, the Finnish Funding Agency for Technology and Innovation (TEKES), the Graduate School in Chemical Engineering (GSCE), the Academy of Finland (Projects 258319 and 26495), the Finnish Foundation for Technology Promotion, the Finnish Science Foundation for Economics and Technology, and the Tauno Tönning Foundation is gratefully acknowledged.
Copyright information: © The Minerals, Metals & Materials Society and ASM International 2017. Published in this repository with the kind permission of the publisher.