Effect of partially reduced highly fluxed DRI pellets on impurities removal during steelmaking using a laboratory scale EAF
The present work represents a comparative study on the impurities removal from pig iron melt by addition of partially reduced highly fluxed direct reduced iron (DRI) to make steel in a 2 kg capacity electric arc furnace (EAF). Three types of fluxed DRI (30, 50, 80% Reduction (%R) with similar basici...
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University of Belgrade, Technical Faculty, Bor
2022-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392100050D.pdf |
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| author | Dishwar R.K. Sinha O.P. |
| author_facet | Dishwar R.K. Sinha O.P. |
| author_sort | Dishwar R.K. |
| collection | DOAJ |
| description | The present work represents a comparative study on the impurities removal from pig iron melt by addition of partially reduced highly fluxed direct reduced iron (DRI) to make steel in a 2 kg capacity electric arc furnace (EAF). Three types of fluxed DRI (30, 50, 80% Reduction (%R) with similar basicity-8) were used to maintain different level of oxidizing potential on the bath for studying the kinetic behavior of impurities removal from melt. Results showed that the rate of removal of impurities (i.e. C, Si, Mn, P, S etc.) increased initially up to 5 minutes of reaction time then decreased afterwards. Phosphorus (~64%), sulfur (~16%), and carbon (~94%) were removed simultaneously up to 25 minutes of reaction time using 30%R fluxed DRI. Similarly, phosphorus (~33%), sulfur (~50%), and carbon (~62%) were removed simultaneously using 50%R fluxed DRI while highly reduced (80%R) flux DRI removed sulfur (~58%), carbon (~56%) with a small fraction of phosphorus (~18%) from pig iron. It was observed in all the cases that silicon (>99%) and manganese (>80%) were removed. From the present study, it can be concluded that ~30%R DRI is favorable for effective phosphorus removal whereas ~80%R is favorable for sulfur removal. The significant removal of impurities could be achieved by charging ~50%R fluxed DRI in the pig iron melt. |
| format | Article |
| id | doaj-art-4370294480e5493da12550c0e199098d |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-4370294480e5493da12550c0e199098d2025-02-02T00:42:48ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752022-01-01581637310.2298/JMMB210319050D1450-53392100050DEffect of partially reduced highly fluxed DRI pellets on impurities removal during steelmaking using a laboratory scale EAFDishwar R.K.0Sinha O.P.1Indian Institute of Technology (ISM) Dhanbad, Department of Fuel, Minerals and Metallurgical Engineering, Dhanbad, IndiaIndian Institute of Technology (Banaras Hindu University) Varanasi, Department of Metallurgical Engineering, Varanasi, IndiaThe present work represents a comparative study on the impurities removal from pig iron melt by addition of partially reduced highly fluxed direct reduced iron (DRI) to make steel in a 2 kg capacity electric arc furnace (EAF). Three types of fluxed DRI (30, 50, 80% Reduction (%R) with similar basicity-8) were used to maintain different level of oxidizing potential on the bath for studying the kinetic behavior of impurities removal from melt. Results showed that the rate of removal of impurities (i.e. C, Si, Mn, P, S etc.) increased initially up to 5 minutes of reaction time then decreased afterwards. Phosphorus (~64%), sulfur (~16%), and carbon (~94%) were removed simultaneously up to 25 minutes of reaction time using 30%R fluxed DRI. Similarly, phosphorus (~33%), sulfur (~50%), and carbon (~62%) were removed simultaneously using 50%R fluxed DRI while highly reduced (80%R) flux DRI removed sulfur (~58%), carbon (~56%) with a small fraction of phosphorus (~18%) from pig iron. It was observed in all the cases that silicon (>99%) and manganese (>80%) were removed. From the present study, it can be concluded that ~30%R DRI is favorable for effective phosphorus removal whereas ~80%R is favorable for sulfur removal. The significant removal of impurities could be achieved by charging ~50%R fluxed DRI in the pig iron melt.http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392100050D.pdffluxed drielectric arc furnacedesulphurizationdephosphorizationdecarburizationkinetics of steelmaking |
| spellingShingle | Dishwar R.K. Sinha O.P. Effect of partially reduced highly fluxed DRI pellets on impurities removal during steelmaking using a laboratory scale EAF Journal of Mining and Metallurgy. Section B: Metallurgy fluxed dri electric arc furnace desulphurization dephosphorization decarburization kinetics of steelmaking |
| title | Effect of partially reduced highly fluxed DRI pellets on impurities removal during steelmaking using a laboratory scale EAF |
| title_full | Effect of partially reduced highly fluxed DRI pellets on impurities removal during steelmaking using a laboratory scale EAF |
| title_fullStr | Effect of partially reduced highly fluxed DRI pellets on impurities removal during steelmaking using a laboratory scale EAF |
| title_full_unstemmed | Effect of partially reduced highly fluxed DRI pellets on impurities removal during steelmaking using a laboratory scale EAF |
| title_short | Effect of partially reduced highly fluxed DRI pellets on impurities removal during steelmaking using a laboratory scale EAF |
| title_sort | effect of partially reduced highly fluxed dri pellets on impurities removal during steelmaking using a laboratory scale eaf |
| topic | fluxed dri electric arc furnace desulphurization dephosphorization decarburization kinetics of steelmaking |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392100050D.pdf |
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