Study on thermodynamics and dynamics of top slag modification in O5 automobile sheets

doi:10.1515/htmp-2022-0047

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	Study on thermodynamics and dynamics of top slag modification in O5 automobile sheets
	Li, Shujun 1,2; Du, Xueyan 1,2
刊名	High Temperature Materials and Processes
	2022
卷号	41 期号:1 页码:449-459
关键词	Alumina Aluminum oxide Steel foundry practice Thermodynamics Automobile sheets Calculation analysis Dynamic condition Dynamics models Modification Modification effect Molten steel Thermodynamic conditions Thermodynamics calculations Top slag
ISSN号	0334-6455
DOI	10.1515/htmp-2022-0047
英文摘要	This article presents a new Ruhrstahl-Heraeus top slag modifier with an enhanced modification effect at an enterprise producing O5 automobile sheets. To compare the modification effect of the original and new modifiers, the thermodynamic and dynamic conditions of the top slag modification were studied by thermodynamic calculations and dynamic analysis. The results showed that the utilization of both modifiers reduced the total iron (TFe) content in the top slag. The new modifier controlled the CaO/Al2O3 (C/A) and TFe content of the top slag to approximately 1.22-1.30 and 6.07-7.97%, respectively. The adsorption capacity of top slag for inclusions was stronger than that of the top slag modified with the original modifier. The concentrations of Al2O3-type inclusions, Ti x O·Al2O3 composite inclusions, and oxide inclusions were reduced by 13.4, 21.2, and 3.4 per cm2 with the new modifier compared with the original modifier. The total oxygen content in molten steel was 2.8 ppm lower than that of the original when the new modifier was used. Moreover, the new modifier exhibited a better dynamic condition on the surface of top slag, as determined by R-G-B numerical analysis. Overall, the new modifier improved the dynamic conditions of top slag modification, reduced top slag oxidation, and effectively improved the cleanliness of the molten steel. © 2022 Shujun Li and Xueyan Du, published by De Gruyter.
WOS研究方向	Materials Science
语种	英语
出版者	De Gruyter Open Ltd
WOS记录号	WOS:000839542200001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159730]
专题	研究生院
作者单位	1.School of Materials Science and Engineering, Lanzhou University of Technology, Gansu, Lanzhou; 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, Gansu, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Li, Shujun,Du, Xueyan. Study on thermodynamics and dynamics of top slag modification in O5 automobile sheets[J]. High Temperature Materials and Processes,2022,41(1):449-459.
APA	Li, Shujun,&Du, Xueyan.(2022).Study on thermodynamics and dynamics of top slag modification in O5 automobile sheets.High Temperature Materials and Processes,41(1),449-459.
MLA	Li, Shujun,et al."Study on thermodynamics and dynamics of top slag modification in O5 automobile sheets".High Temperature Materials and Processes 41.1(2022):449-459.