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EAF steelmaking process with increasing hot metal charging ratio and improving slagging regime
Duan, Jian-ping2; Zhang, Yong-liang2; Yang, Xue-min1; Yang, XM
2009-08-01
Source PublicationINTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
ISSN1674-4799
Volume16Issue:4Pages:375-382
AbstractA new electric arc furnace (EAF) steelmaking process with increasing hot metal charging ratio and improving slagging regime simultaneouly was developed and applied in a 50 t electric arc furnace for more than a year at No. 1 Steelmaking Plant of Shanxi Taigang Stainless Corporation Limited. The essential fact of the new EAF steelmaking process was to charge hot metal in two portions or steps: firstly, 35wt%-40wt% hot metal was pretreated by blowing oxygen in a specially designed reactor for decarburization and improving hot metal temperature and melting premelted slag; secondly, 30wt% hot metal was charged into EAF with high basicity refining slags from ladle furnace (LF)-vacuum degassing furnace (VD) refining process. The results show that the hot metal charging ratio can reach to about 65wt%-70wt% for the new EAF steelmaking process; meanwhile, the tap-to-tap time of a 50 1 EAF can shorten by 5-10 min, the electricity consumption can decrease by 35-50 kW-h/t, the lime consumption can reduce by 10.5 kg/t of molten steel, and the content of harmful heavy metals in molten steel can be easily controlled to less than the upper limits of aimed steel specification or grade compared with the traditional EAF steelmaking process. In addition, the dephosphorization ability shows a slight strengthening, however, a small degree of lessening for desulphurization ability is observed for the new EAF steelmaking process, but the weakness of desulphurization ability cannot become an obstacle to its further application since a stronger desulphurization ability can be achieved during secondary refining of LF coupled with VD after EAF steelmaking process.
KeywordElectric Arc Furnace (Eaf) Charge Ratio Slagging Refining Slags Lime
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordFURNACE
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
WOS IDWOS:000269622800003
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6620
Collection多相复杂系统国家重点实验室
Corresponding AuthorYang, XM
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
2.Shanxi Taigang Stainless Corp Ltd, Ctr Tech, Taiyuan 030003, Shanxi, Peoples R China
Recommended Citation
GB/T 7714
Duan, Jian-ping,Zhang, Yong-liang,Yang, Xue-min,et al. EAF steelmaking process with increasing hot metal charging ratio and improving slagging regime[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2009,16(4):375-382.
APA Duan, Jian-ping,Zhang, Yong-liang,Yang, Xue-min,&Yang, XM.(2009).EAF steelmaking process with increasing hot metal charging ratio and improving slagging regime.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,16(4),375-382.
MLA Duan, Jian-ping,et al."EAF steelmaking process with increasing hot metal charging ratio and improving slagging regime".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 16.4(2009):375-382.
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