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Study on hydrogen smelting reduction behaviour in synthetic molten HIsarna slag
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Htet, Theint Theint, Yan, Zhiming, Kumar, Bharath Sampath, Hage, Johannes, Meijer, Koen and Li, Zushu (2023) Study on hydrogen smelting reduction behaviour in synthetic molten HIsarna slag. Ironmaking & Steelmaking, 50 (11). pp. 1590-1600. doi:10.1080/03019233.2023.2204267 ISSN 0301-9233.
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Official URL: https://doi.org/10.1080/03019233.2023.2204267
Abstract
The reduction behaviour of hydrogen with FeO in synthetic molten HIsarna slag has been investigated using two experimental methods: (1) Blowing 5% or 10% H2-Ar onto the molten slag at 1450, 1475, 1550 ˚C respectively; and (2) Injecting 10% H2-Ar into the molten slag at the flowrates of 0.5, 1.0, 1.5 L/min. In the case of blowing the gas onto the melt, the reaction is controlled by gas phase diffusion in the initial stage and then liquid phase diffusion becomes dominant. The reaction rate is significantly improved by injecting the gas into the molten slag; bubbles are generated during the gas injection resulting in ample surface area between the gas and liquid slag. The overall reduction is controlled by the liquid phase mass transfer of FeO in the injection case; described by the penetration theory. Furthermore, an increased number of bubbles are generated with increasing flow rate, which in turn increases the reaction rate in the case of hydrogen injection.
Item Type: | Journal Article | |||||||||
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Subjects: | T Technology > TN Mining engineering. Metallurgy T Technology > TS Manufactures |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||
Journal or Publication Title: | Ironmaking & Steelmaking | |||||||||
Publisher: | Maney Publishing | |||||||||
ISSN: | 0301-9233 | |||||||||
Official Date: | 1 May 2023 | |||||||||
Dates: |
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Volume: | 50 | |||||||||
Number: | 11 | |||||||||
Page Range: | pp. 1590-1600 | |||||||||
DOI: | 10.1080/03019233.2023.2204267 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||
Date of first compliant deposit: | 17 April 2023 | |||||||||
Date of first compliant Open Access: | 7 June 2023 | |||||||||
RIOXX Funder/Project Grant: |
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