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Kinetic study on reduction of FeO in a molten HIsarna slag by various solid carbon sources
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Htet, Theint Theint, Yan, Zhiming, Khasraw, Darbaz, Hage, Johannes, Meijer, Koen and Li, Zushu (2022) Kinetic study on reduction of FeO in a molten HIsarna slag by various solid carbon sources. Metallurgical and Materials Transactions B . doi:10.1007/s11663-022-02677-1 ISSN 1073-5615. (In Press)
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WRAP-Kinetic-study-on-reduction-of-FeO-in-a-molten-HIsarna-slag-by-various-solid-carbon-sources-Li-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (3042Kb) | Preview |
Official URL: https://doi.org/10.1007/s11663-022-02677-1
Abstract
To investigate the reduction behaviour of different reductants such as charcoal (CC), thermal coal (TC), and carbon black (CB) with HIsarna slag, a series of isothermal reduction experiments were performed in a vertical tube resistance furnace (VTF), coupled with a Quadrupole mass spectrometer (QMS) at 1450, 1475 and 1500 ˚C. The results confirm that the highest overall reduction rate was achieved by CC, followed by TC and CB. The reduction mechanism between FeO containing molten
slag and the selected carbonaceous materials is determined by studying the morphology of the water quenched samples at the intervals of 1.5, 3 and 5 minutes, using optical and scanning electron microscopes. The results reveal that the overall reaction is controlled by two main mechanisms: (1) nucleation and growth of CO bubbles, proceeded by the gaseous intermediates CO and CO2; and (2) diffusion of FeO in the molten slag. The initial reduction period in which chemical reaction control is dominant, can be described by the Avrami-Erofeev model, whereas the final period is described by the three-dimensional diffusion model.
| 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) | |||||||||
| Library of Congress Subject Headings (LCSH): | Iron -- Metallurgy, Steel -- Metallurgy, Iron industry and trade, Steel industry and trade -- Technological innovations, Ferrous oxide -- Metallurgy, Oxidation-reduction reaction, Carbon monoxide -- Industrial applications, Slag, Mass spectrometry -- Research | |||||||||
| Journal or Publication Title: | Metallurgical and Materials Transactions B | |||||||||
| Publisher: | Springer New York LLC | |||||||||
| ISSN: | 1073-5615 | |||||||||
| Official Date: | 2022 | |||||||||
| Dates: |
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| DOI: | 10.1007/s11663-022-02677-1 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | In Press | |||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||
| Date of first compliant deposit: | 31 October 2022 | |||||||||
| Date of first compliant Open Access: | 29 November 2022 | |||||||||
| RIOXX Funder/Project Grant: |
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