Effect of temperature on oxidation behavior and occurrence state of sulfur in KR slag
The main component (CaO) in KR (Kambara reaction) desulfurization slag is a high value slag raw material for converter smelting, and attempts to utilize KR desulfurization slag in converter smelting are conducive to reducing the buildup of KR desulfurization slag and improving the economic efficienc...
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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/1450-5339/2023/1450-53392300037J.pdf |
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| author | Jiang J.-J. Xiao C. Yu Y. Li J.-L. |
| author_facet | Jiang J.-J. Xiao C. Yu Y. Li J.-L. |
| author_sort | Jiang J.-J. |
| collection | DOAJ |
| description | The main component (CaO) in KR (Kambara reaction) desulfurization slag is a high value slag raw material for converter smelting, and attempts to utilize KR desulfurization slag in converter smelting are conducive to reducing the buildup of KR desulfurization slag and improving the economic efficiency of converter smelting. However, the removal of sulfur in the slag is a key issue. The influence of temperature on the sulfur oxidation behavior in KR slag in the form of synthetic slag was investigated. SEM-EDS, XRD, and an infrared carbon and sulfur analyzer were used to analyze and detect the oxidized slag samples at different temperatures. The results show that the desulfurization rate increases gradually with the increase in temperature at a flow rate of Ar-50%O2 of 2 L/min. Under the condition of low temperature (T ≤ 1220℃), the desulfurization rate of slag is less affected by temperature. When T > is 1220℃, the desulfurization rate of slag is greatly affected by temperature. When the reaction temperature reaches 1420℃, the desulfurization rate reaches 93.5%. Furthermore, the types of sulfur-containing phases in the oxidized slag samples gradually decrease with the increase of temperature, and the sulfur in the oxidized slag samples is mainly present in the silicate phase when the temperature is less than or equal to 1220℃. |
| format | Article |
| id | doaj-art-d32aca7e455248a8aed5f1a2615da41e |
| 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-d32aca7e455248a8aed5f1a2615da41e2025-02-03T04:03:57ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752023-01-0159343144110.2298/JMMB230523037J1450-53392300037JEffect of temperature on oxidation behavior and occurrence state of sulfur in KR slagJiang J.-J.0Xiao C.1Yu Y.2Li J.-L.3Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking, Wuhan University of Science and Technology, Wuhan, Hubei, ChinaAutomotive Research Institute, China National Heavy Duty Truck Group Co, LTD, Jinan, ChinaKey Laboratory for Ferrous Metallurgy and resources utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan, Hubei, ChinaHubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking, Wuhan University of Science and Technology, Wuhan, Hubei, China + Key Laboratory for Ferrous Metallurgy and resources utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan, Hubei, ChinaThe main component (CaO) in KR (Kambara reaction) desulfurization slag is a high value slag raw material for converter smelting, and attempts to utilize KR desulfurization slag in converter smelting are conducive to reducing the buildup of KR desulfurization slag and improving the economic efficiency of converter smelting. However, the removal of sulfur in the slag is a key issue. The influence of temperature on the sulfur oxidation behavior in KR slag in the form of synthetic slag was investigated. SEM-EDS, XRD, and an infrared carbon and sulfur analyzer were used to analyze and detect the oxidized slag samples at different temperatures. The results show that the desulfurization rate increases gradually with the increase in temperature at a flow rate of Ar-50%O2 of 2 L/min. Under the condition of low temperature (T ≤ 1220℃), the desulfurization rate of slag is less affected by temperature. When T > is 1220℃, the desulfurization rate of slag is greatly affected by temperature. When the reaction temperature reaches 1420℃, the desulfurization rate reaches 93.5%. Furthermore, the types of sulfur-containing phases in the oxidized slag samples gradually decrease with the increase of temperature, and the sulfur in the oxidized slag samples is mainly present in the silicate phase when the temperature is less than or equal to 1220℃.https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300037J.pdfkr slagtemperaturesulfuroxidation behavior |
| spellingShingle | Jiang J.-J. Xiao C. Yu Y. Li J.-L. Effect of temperature on oxidation behavior and occurrence state of sulfur in KR slag Journal of Mining and Metallurgy. Section B: Metallurgy kr slag temperature sulfur oxidation behavior |
| title | Effect of temperature on oxidation behavior and occurrence state of sulfur in KR slag |
| title_full | Effect of temperature on oxidation behavior and occurrence state of sulfur in KR slag |
| title_fullStr | Effect of temperature on oxidation behavior and occurrence state of sulfur in KR slag |
| title_full_unstemmed | Effect of temperature on oxidation behavior and occurrence state of sulfur in KR slag |
| title_short | Effect of temperature on oxidation behavior and occurrence state of sulfur in KR slag |
| title_sort | effect of temperature on oxidation behavior and occurrence state of sulfur in kr slag |
| topic | kr slag temperature sulfur oxidation behavior |
| url | https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300037J.pdf |
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