Replacement of lime with industrial wastes in hot metal desulfurization mixtures
The steel production enhancement in recent decades has increased the solid waste generation in the steel plants. Due to the increase in the environmental policies stringency, efforts have been made to give them a more appropriate destination. In this context, the internal reuse of these materials is...
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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/1450-5339/2022/1450-53392200005S.pdf |
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| author | Santo E.V.D.E. Soares S.G. de Oliveira H.C.C. Junca E. Grillo F.F. de Oliveira J.R. |
| author_facet | Santo E.V.D.E. Soares S.G. de Oliveira H.C.C. Junca E. Grillo F.F. de Oliveira J.R. |
| author_sort | Santo E.V.D.E. |
| collection | DOAJ |
| description | The steel production enhancement in recent decades has increased the solid waste generation in the steel plants. Due to the increase in the environmental policies stringency, efforts have been made to give them a more appropriate destination. In this context, the internal reuse of these materials is a solution often applied by the industry to reduce production costs and to decrease slag generation. Therefore, the aim of this research is to replace calcitic lime by limestone waste and KR slag in hot metal desulfurization, which are wastes from steel production. The KR slag is the waste generated by the desulfurization process in Kambara Reactor. Experimental desulfurization tests were carried out in a resistance furnace at a temperature of 1350°C, in an inert atmosphere with constant stirring of 500 rpm. Along with the tests, simulations were carried out with FactSage 7.0 software in order to obtain the phases present in each mixture at the working temperature and compare them with the practical results. It was found that the tricalcium silicate phase (3CaO·SiO2) was present in mixtures with lower desulfurization efficiency, which shows its kinetic limitation. The use of limestone waste proved to be more efficient than the use of KR slag. |
| format | Article |
| id | doaj-art-8316bc0306a64756b1497a47201a1bd3 |
| 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-8316bc0306a64756b1497a47201a1bd32025-02-02T13:28:53ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752022-01-0158224325210.2298/JMMB210407005S1450-53392200005SReplacement of lime with industrial wastes in hot metal desulfurization mixturesSanto E.V.D.E.0Soares S.G.1de Oliveira H.C.C.2Junca E.3Grillo F.F.4de Oliveira J.R.5Federal Institute of Education, Science and Technology of Espirito Santo (IFES), Department of Metallurgical and Materials Engineering (PROPEMM), Vitória, BrazilFederal Institute of Education, Science and Technology of Espirito Santo (IFES), Department of Metallurgical and Materials Engineering (PROPEMM), Vitória, BrazilFederal Institute of Education, Science and Technology of Espirito Santo (IFES), Department of Metallurgical and Materials Engineering (PROPEMM), Vitória, BrazilUniversidade do Extremo Sul Catarinense (UNESC), Department of Materials Science and Engineering (PPGCEM), Criciúma, BrazilFederal Institute of Education, Science and Technology of Espirito Santo (IFES), Department of Metallurgical and Materials Engineering (PROPEMM), Vitória, BrazilFederal Institute of Education, Science and Technology of Espirito Santo (IFES), Department of Metallurgical and Materials Engineering (PROPEMM), Vitória, BrazilThe steel production enhancement in recent decades has increased the solid waste generation in the steel plants. Due to the increase in the environmental policies stringency, efforts have been made to give them a more appropriate destination. In this context, the internal reuse of these materials is a solution often applied by the industry to reduce production costs and to decrease slag generation. Therefore, the aim of this research is to replace calcitic lime by limestone waste and KR slag in hot metal desulfurization, which are wastes from steel production. The KR slag is the waste generated by the desulfurization process in Kambara Reactor. Experimental desulfurization tests were carried out in a resistance furnace at a temperature of 1350°C, in an inert atmosphere with constant stirring of 500 rpm. Along with the tests, simulations were carried out with FactSage 7.0 software in order to obtain the phases present in each mixture at the working temperature and compare them with the practical results. It was found that the tricalcium silicate phase (3CaO·SiO2) was present in mixtures with lower desulfurization efficiency, which shows its kinetic limitation. The use of limestone waste proved to be more efficient than the use of KR slag.http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392200005S.pdfdesulfurizationlimestone wastekr slagsolid and liquid phases |
| spellingShingle | Santo E.V.D.E. Soares S.G. de Oliveira H.C.C. Junca E. Grillo F.F. de Oliveira J.R. Replacement of lime with industrial wastes in hot metal desulfurization mixtures Journal of Mining and Metallurgy. Section B: Metallurgy desulfurization limestone waste kr slag solid and liquid phases |
| title | Replacement of lime with industrial wastes in hot metal desulfurization mixtures |
| title_full | Replacement of lime with industrial wastes in hot metal desulfurization mixtures |
| title_fullStr | Replacement of lime with industrial wastes in hot metal desulfurization mixtures |
| title_full_unstemmed | Replacement of lime with industrial wastes in hot metal desulfurization mixtures |
| title_short | Replacement of lime with industrial wastes in hot metal desulfurization mixtures |
| title_sort | replacement of lime with industrial wastes in hot metal desulfurization mixtures |
| topic | desulfurization limestone waste kr slag solid and liquid phases |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392200005S.pdf |
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