Modeling of partial reduction of hematite with carbon-monoxide in tunnel furnace
DRI production in tunnel furnaces sometimes encounters an incomplete degree of reduction. A model is required to tackle heterogeneous reaction rates, crucible heat transfer, and oxide morphology. Herein, a three-phase model is proposed based on the heat and mass conservation and reaction kinetics, t...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2023-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300020S.pdf |
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| author | Salimibani S. Jafari-Ramiani A. Firoozi S. |
| author_facet | Salimibani S. Jafari-Ramiani A. Firoozi S. |
| author_sort | Salimibani S. |
| collection | DOAJ |
| description | DRI production in tunnel furnaces sometimes encounters an incomplete degree of reduction. A model is required to tackle heterogeneous reaction rates, crucible heat transfer, and oxide morphology. Herein, a three-phase model is proposed based on the heat and mass conservation and reaction kinetics, to describe the reduction of hematite to magnetite in the crucibles. The model was implemented via a Fortran program using finite volume discretization, and the results were validated against available experimental data. The model moderated the uncertainties in the reaction rate with a reformulation considering the solid morphology. The results also revealed that the speed and diameter of the crucible have dominant effects on the overall progress of the reduction by changing the heat transfer rate within the crucible. In contrast, the crucible thickness has a minor effect on the reaction and could be regarded as an economical parameter. |
| format | Article |
| id | doaj-art-73d074a93e4f43059dde7fc537a25158 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-73d074a93e4f43059dde7fc537a251582025-02-03T00:42:49ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752023-01-0159223124110.2298/JMMB221129020S1450-53392300020SModeling of partial reduction of hematite with carbon-monoxide in tunnel furnaceSalimibani S.0Jafari-Ramiani A.1Firoozi S.2Amirkabir University of Technology (Tehran Polytechnic), Faculty of Materials and Metallurgical Engineering, Tehran, IranAmirkabir University of Technology (Tehran Polytechnic), Faculty of Materials and Metallurgical Engineering, Tehran, IranAmirkabir University of Technology (Tehran Polytechnic), Faculty of Materials and Metallurgical Engineering, Tehran, IranDRI production in tunnel furnaces sometimes encounters an incomplete degree of reduction. A model is required to tackle heterogeneous reaction rates, crucible heat transfer, and oxide morphology. Herein, a three-phase model is proposed based on the heat and mass conservation and reaction kinetics, to describe the reduction of hematite to magnetite in the crucibles. The model was implemented via a Fortran program using finite volume discretization, and the results were validated against available experimental data. The model moderated the uncertainties in the reaction rate with a reformulation considering the solid morphology. The results also revealed that the speed and diameter of the crucible have dominant effects on the overall progress of the reduction by changing the heat transfer rate within the crucible. In contrast, the crucible thickness has a minor effect on the reaction and could be regarded as an economical parameter.https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300020S.pdfmultiphase modelinghematitedirect reductionkineticsironmaking |
| spellingShingle | Salimibani S. Jafari-Ramiani A. Firoozi S. Modeling of partial reduction of hematite with carbon-monoxide in tunnel furnace Journal of Mining and Metallurgy. Section B: Metallurgy multiphase modeling hematite direct reduction kinetics ironmaking |
| title | Modeling of partial reduction of hematite with carbon-monoxide in tunnel furnace |
| title_full | Modeling of partial reduction of hematite with carbon-monoxide in tunnel furnace |
| title_fullStr | Modeling of partial reduction of hematite with carbon-monoxide in tunnel furnace |
| title_full_unstemmed | Modeling of partial reduction of hematite with carbon-monoxide in tunnel furnace |
| title_short | Modeling of partial reduction of hematite with carbon-monoxide in tunnel furnace |
| title_sort | modeling of partial reduction of hematite with carbon monoxide in tunnel furnace |
| topic | multiphase modeling hematite direct reduction kinetics ironmaking |
| url | https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300020S.pdf |
| work_keys_str_mv | AT salimibanis modelingofpartialreductionofhematitewithcarbonmonoxideintunnelfurnace AT jafariramiania modelingofpartialreductionofhematitewithcarbonmonoxideintunnelfurnace AT firoozis modelingofpartialreductionofhematitewithcarbonmonoxideintunnelfurnace |