Prediction of re-oxidation behaviour of ultra-low carbon steel by different slag series

Abstract A kinetic model was developed using FactSage Macro Processing to simulate the re-oxidation of ultra-low carbon steel via different oxidising slags. The calculated results show good agreement with experimental laboratory thermal simulation data. Therefore, the model can be used to predict th...

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Autores principales:	Aijun Deng, Yunjin Xia, Hongbiao Dong, Haichuan Wang, Dingdong Fan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4c1bf58738614c4f93f636976bc76a28
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spelling	oai:doaj.org-article:4c1bf58738614c4f93f636976bc76a282021-12-02T17:52:13ZPrediction of re-oxidation behaviour of ultra-low carbon steel by different slag series10.1038/s41598-020-66318-w2045-2322https://doaj.org/article/4c1bf58738614c4f93f636976bc76a282020-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-66318-whttps://doaj.org/toc/2045-2322Abstract A kinetic model was developed using FactSage Macro Processing to simulate the re-oxidation of ultra-low carbon steel via different oxidising slags. The calculated results show good agreement with experimental laboratory thermal simulation data. Therefore, the model can be used to predict the change behaviour of slag-metal-inclusion in the re-oxidation reaction of liquid steel. It can provide prediction and guidance for an accurate secondary oxidation control process. During the slag re-oxidation process, when the oxygen in the steel is supersaturated and the slag is low in oxidation, it can easily form stick-like and dendritic shape inclusions of Al2O3 in steel. As the (FeO) content increases in slag, the oxygen transfer from slag to steel is evident, and the inclusion size increases, showing clusters and spherical shapes. In addition, supersaturated oxygen in steel easily forms unstable Al2O3-TiOx inclusions with [Ti]. As the components of liquid steel tend to be uniform, the Al2O3-TiOx inclusions will decompose and disappear, forming stable Al2O3 and TiO2 inclusions. The number of inclusions can be reduced by increasing the basicity and the ratio of CaO to Al2O3 in the initial slag.Aijun DengYunjin XiaHongbiao DongHaichuan WangDingdong FanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-10 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Aijun Deng Yunjin Xia Hongbiao Dong Haichuan Wang Dingdong Fan Prediction of re-oxidation behaviour of ultra-low carbon steel by different slag series
description	Abstract A kinetic model was developed using FactSage Macro Processing to simulate the re-oxidation of ultra-low carbon steel via different oxidising slags. The calculated results show good agreement with experimental laboratory thermal simulation data. Therefore, the model can be used to predict the change behaviour of slag-metal-inclusion in the re-oxidation reaction of liquid steel. It can provide prediction and guidance for an accurate secondary oxidation control process. During the slag re-oxidation process, when the oxygen in the steel is supersaturated and the slag is low in oxidation, it can easily form stick-like and dendritic shape inclusions of Al2O3 in steel. As the (FeO) content increases in slag, the oxygen transfer from slag to steel is evident, and the inclusion size increases, showing clusters and spherical shapes. In addition, supersaturated oxygen in steel easily forms unstable Al2O3-TiOx inclusions with [Ti]. As the components of liquid steel tend to be uniform, the Al2O3-TiOx inclusions will decompose and disappear, forming stable Al2O3 and TiO2 inclusions. The number of inclusions can be reduced by increasing the basicity and the ratio of CaO to Al2O3 in the initial slag.
format	article
author	Aijun Deng Yunjin Xia Hongbiao Dong Haichuan Wang Dingdong Fan
author_facet	Aijun Deng Yunjin Xia Hongbiao Dong Haichuan Wang Dingdong Fan
author_sort	Aijun Deng
title	Prediction of re-oxidation behaviour of ultra-low carbon steel by different slag series
title_short	Prediction of re-oxidation behaviour of ultra-low carbon steel by different slag series
title_full	Prediction of re-oxidation behaviour of ultra-low carbon steel by different slag series
title_fullStr	Prediction of re-oxidation behaviour of ultra-low carbon steel by different slag series
title_full_unstemmed	Prediction of re-oxidation behaviour of ultra-low carbon steel by different slag series
title_sort	prediction of re-oxidation behaviour of ultra-low carbon steel by different slag series
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/4c1bf58738614c4f93f636976bc76a28
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_version_	1718379223332159488

Prediction of re-oxidation behaviour of ultra-low carbon steel by different slag series

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