CAS OpenIR
A Critical Review of Limitations of Slag Capacity Concepts in Metallurgical Applications by Taking Sulfide and Phosphate Capacities as Examples
Yang, Xue-Min1; Li, Jin-Yan2,3; Zhang, Meng2,3; Jiao, Jin-Sha2,4
2021-02-22
Source PublicationMETALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
ISSN1073-5615
Pages29
AbstractThe desulfurization and dephosphorization performances have been considered to be the most challenging operations for refining ultra-clean steel. The distribution ratios of sulfur and phosphorus in the form of L-i = (%i)/[%i] as well as slag capacity concepts of sulfide and phosphate capacities in the form of Cim- proportional to (% i(m-)) have been extensively studied and widely applied for the description of desulfurization and dephosphorization abilities and potentials, respectively. However, the intrinsic limitations of two slag capacity concepts as sulfide and phosphate capacities regardless of slag oxygen potential p(O2) have seriously limited their direct applications into guiding the practical refining operations compared with the partitions or distribution ratios L-i. The theoretical limitations of sulfide and phosphate capacities have been extensively reviewed and critically assessed by comparison with the distribution ratios L-i in this contribution by taking two preferred thermodynamic conditions of both basic oxides concentration or slag basicity and slag oxygen potential as criteria. Meanwhile, the merits of two slag capacity concepts as measures for describing slag basicity like optical basicity have also been reviewed to be disruptive because the ratios of activity of free oxygen ion a(O2-) in slags to activity coefficients f(H, i) of sulfide and monomer phosphate PO43- in slags as implicit parameters in the defined two slag capacity concepts cannot hold constants in most complex slags. Furthermore, the limitations of phosphate capacity in two ways have been restated. Moreover, the oxygen potential p(O2) shows a great effect on plots of the desulfurization and dephosphorization abilities against two slag capacity concepts of slags at a given temperature. The abnormally higher oxygen potential pO2 can result in a suppression of the desulfurization ability of slags with a greater desulfurization potential, while the unreasonably smaller oxygen potential p(O2) can lead to a diminishing of the dephosphorization ability of slags with a larger dephosphorization potential. It has been verified by five case-studies covering desulfurization and dephosphorization operations that the partitions or distribution ratios L-i related to equilibrium quotients ki of desulfurization and dephosphorization reactions of Fe-based melts by slags can be in good accordance with two preferred thermodynamic conditions. The reasonable application of two slag capacity concepts is recommended to estimate or determine the distribution ratios between slags and Fe-based melts with the aid of activity a(%, O) of oxygen and activity coefficient f(%, i) of sulfur and phosphorus in Fe-base melts.
DOI10.1007/s11663-020-02045-x
Language英语
WOS KeywordOXYGEN SOLUTIONS ; THERMODYNAMICS
Funding ProjectBeijing Natural Science Foundation[2182069]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationBeijing Natural Science Foundation
WOS IDWOS:000620475600002
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/43536
Collection中国科学院过程工程研究所
Corresponding AuthorYang, Xue-Min
Affiliation1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
3.China Met Ind Planning & Res Inst, Beijing 100711, Peoples R China
4.Beijing Shougang Co Ltd, Hot Rolling Operat Dept, Qianan City 064400, Hebei, Peoples R China
Recommended Citation
GB/T 7714
Yang, Xue-Min,Li, Jin-Yan,Zhang, Meng,et al. A Critical Review of Limitations of Slag Capacity Concepts in Metallurgical Applications by Taking Sulfide and Phosphate Capacities as Examples[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2021:29.
APA Yang, Xue-Min,Li, Jin-Yan,Zhang, Meng,&Jiao, Jin-Sha.(2021).A Critical Review of Limitations of Slag Capacity Concepts in Metallurgical Applications by Taking Sulfide and Phosphate Capacities as Examples.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,29.
MLA Yang, Xue-Min,et al."A Critical Review of Limitations of Slag Capacity Concepts in Metallurgical Applications by Taking Sulfide and Phosphate Capacities as Examples".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE (2021):29.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yang, Xue-Min]'s Articles
[Li, Jin-Yan]'s Articles
[Zhang, Meng]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yang, Xue-Min]'s Articles
[Li, Jin-Yan]'s Articles
[Zhang, Meng]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yang, Xue-Min]'s Articles
[Li, Jin-Yan]'s Articles
[Zhang, Meng]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.