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A physical modelling study to determine the influence of slag on the fluid flow in the AOD converter process
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0002-1203-0181
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0003-1919-9964
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2018 (English)In: Ironmaking & steelmaking, ISSN 0301-9233, E-ISSN 1743-2812, Vol. 45, no 10, p. 944-950Article in journal (Refereed) Published
Abstract [en]

A 1:4.6 scale physical model of a production argon oxygen decarburisation (AOD) converter was used to study the influence of top slag on the AOD process. Specifically, the gas penetration depth, fluid flow and slag behaviour under different nozzle diameters, nozzle numbers and gas flow rates were studied. The results show that the relative gas penetration depth generally increases linearly with an increased gas flow rate and a decreased nozzle size. Furthermore, the slag thickness increases linearly with an increased gas flow rate. In addition, the open-eye size was found to increase exponentially with an increased gas flow rate. Overall, three kinds of fluid flow patterns were found in the experiments: (i) a counter-clockwise rotation, (ii) a clockwise rotation and (iii) a double circulation with the plume in the middle of the converter. A counter-clockwise rotation was most common for the current experimental conditions.

Place, publisher, year, edition, pages
Taylor & Francis, 2018. Vol. 45, no 10, p. 944-950
Keywords [en]
Physical modelling, AOD, slag, side-gas injection, penetration depth
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-240764DOI: 10.1080/03019233.2017.1415012ISI: 000453823900014Scopus ID: 2-s2.0-85039167810OAI: oai:DiVA.org:kth-240764DiVA, id: diva2:1275591
Note

QC 20190107

Available from: 2019-01-07 Created: 2019-01-07 Last updated: 2019-01-07Bibliographically approved

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Ni, PeiyuanTilliander, AndersJönsson, Pär G.

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Ternstedt, PatrikNi, PeiyuanLundqvist, NicholasTilliander, AndersJönsson, Pär G.
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