Dissolution mechanism of Al2O3 in refining slags containing Ce2O3

In the present work, the rate of dissolution of Al2O3 rod in CaO-SiO2-Al2O3 and CaO-SiO2-Al2O3-Ce2O3 slags were carried out in the temperature range of 1793 K (1520ºC) - 1853 K (1580ºC) under static conditions. The cross section of the rod and the boundary layers were identified and analyze...

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Main Authors:	Wang L.J., Wang Q., Li J.M., Chou K.C.
Format:	Article
Language:	English
Published:	Technical Faculty, Bor 2016-01-01
Series:	Journal of Mining and Metallurgy. Section B: Metallurgy
Subjects:	clean steel dissolution rate inclusions alumina refining slag Ce2O3
Online Access:	http://www.doiserbia.nb.rs/img/doi/1450-5339/2016/1450-53391600004W.pdf

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record_format	Article
spelling	doaj-dc53bad14158491886ee13a7f2f1752c2020-11-24T23:48:08ZengTechnical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752016-01-01521354010.2298/JMMB140706004W1450-53391600004WDissolution mechanism of Al2O3 in refining slags containing Ce2O3Wang L.J.0Wang Q.1Li J.M.2Chou K.C.3University of Science and Technology, State Key lab of Advanced Metallurgy, Beijing, China + University of Science and Technology, School of Metallurgical and Ecological Engineering, Dept. of Physical chemistry, Beijing, ChinaUniversity of Science and Technology, State Key lab of Advanced Metallurgy, Beijing, China + University of Science and Technology, School of Metallurgical and Ecological Engineering, Dept. of Physical chemistry, Beijing, ChinaTaiyuan Iron & Steel Group Co., Ltd., Shanxi, ChinaUniversity of Science and Technology, State Key lab of Advanced Metallurgy, Beijing, China + University of Science and Technology, School of Metallurgical and Ecological Engineering, Dept. of Physical chemistry, Beijing, ChinaIn the present work, the rate of dissolution of Al2O3 rod in CaO-SiO2-Al2O3 and CaO-SiO2-Al2O3-Ce2O3 slags were carried out in the temperature range of 1793 K (1520ºC) - 1853 K (1580ºC) under static conditions. The cross section of the rod and the boundary layers were identified and analyzed by SEM-EDS. The dissolution of Al2O3 was favored with the increasing CaO/Al2O3 ratio, elevating temperatures as well as the addition of Ce2O3. An intermediate product 3CaO5Al2O3Ce2O3 was detected. The mechanism of dissolution of Al2O3 in the Ce2O3 containing slag were also proposed as three steps involved: 1) the formation of calcium aluminates CaO•Al2O3 at the interface 2) the formation of 3CaO5Al2O3Ce2O3 as the reaction progresses; and 3) the dissolution of 3CaO5Al2O3Ce2O3 into the slag.http://www.doiserbia.nb.rs/img/doi/1450-5339/2016/1450-53391600004W.pdfclean steeldissolution rateinclusionsaluminarefining slagCe2O3
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Wang L.J. Wang Q. Li J.M. Chou K.C.
spellingShingle	Wang L.J. Wang Q. Li J.M. Chou K.C. Dissolution mechanism of Al2O3 in refining slags containing Ce2O3 Journal of Mining and Metallurgy. Section B: Metallurgy clean steel dissolution rate inclusions alumina refining slag Ce2O3
author_facet	Wang L.J. Wang Q. Li J.M. Chou K.C.
author_sort	Wang L.J.
title	Dissolution mechanism of Al2O3 in refining slags containing Ce2O3
title_short	Dissolution mechanism of Al2O3 in refining slags containing Ce2O3
title_full	Dissolution mechanism of Al2O3 in refining slags containing Ce2O3
title_fullStr	Dissolution mechanism of Al2O3 in refining slags containing Ce2O3
title_full_unstemmed	Dissolution mechanism of Al2O3 in refining slags containing Ce2O3
title_sort	dissolution mechanism of al2o3 in refining slags containing ce2o3
publisher	Technical Faculty, Bor
series	Journal of Mining and Metallurgy. Section B: Metallurgy
issn	1450-5339 2217-7175
publishDate	2016-01-01
description	In the present work, the rate of dissolution of Al2O3 rod in CaO-SiO2-Al2O3 and CaO-SiO2-Al2O3-Ce2O3 slags were carried out in the temperature range of 1793 K (1520ºC) - 1853 K (1580ºC) under static conditions. The cross section of the rod and the boundary layers were identified and analyzed by SEM-EDS. The dissolution of Al2O3 was favored with the increasing CaO/Al2O3 ratio, elevating temperatures as well as the addition of Ce2O3. An intermediate product 3CaO5Al2O3Ce2O3 was detected. The mechanism of dissolution of Al2O3 in the Ce2O3 containing slag were also proposed as three steps involved: 1) the formation of calcium aluminates CaO•Al2O3 at the interface 2) the formation of 3CaO5Al2O3Ce2O3 as the reaction progresses; and 3) the dissolution of 3CaO5Al2O3Ce2O3 into the slag.
topic	clean steel dissolution rate inclusions alumina refining slag Ce2O3
url	http://www.doiserbia.nb.rs/img/doi/1450-5339/2016/1450-53391600004W.pdf
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Dissolution mechanism of Al2O3 in refining slags containing Ce2O3

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