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A Prediction Model of Phosphorus Distribution between CaO-SiO2-MgO-FeO-Fe2O3-P2O5 Slags and Liquid Iron (Retracted article. See vol. 54, pg. 2663, 2014)
Li, Peng-Cheng1,2,3; Zhang, Jian-Liang1,2
2014
Source PublicationISIJ INTERNATIONAL
ISSN0915-1559
Volume54Issue:4Pages:756-765
Abstract

CaO-SiO2-MgO-FeO-Fe2O3-P2O5 slags is typical in the basic oxygen steelmaking(BOS) process. Phosphate distribution between slags and liquid iron is an index of the phosphorus holding capacity of the slag, which determines the phosphorus content achievable in the finished steel. In this study, a thermodynamic model for calculating phosphorus distribution between CaO-SiO2-MgO-FeO-Fe2O3-P2O5 slags and liquid iron, i.e., IMCT-L-p model, has been developed coupled with a developed thermodynamic model for calculating mass action concentrations of structural units, le., IMCT-N, model, based on ion and molecule coexistence theory. Simple binary basicity R have a large effect on equilibrium mole number En; of structural units in CaO-SiO2-MgO-FeO-Fe2O3-P2O5 slags, the formula of equilibrium mole number Sigma n(i), against the simple binary basicity R of slags can be regressed as Sigma n(i) = 2.604 - 3.029*exp(-R12.339), and the fitting degree is 0.995. The comparison of the calculated phosphorous distribution by IMCT-L-p model with the measured phosphorous distribution reported from different literatures shows that the agreement between the calculated phosphorous distribution and measured phosphorous distribution is good. Meanwhile, some other L prediction models have also been taken into consideration for calculating phosphate distribution between CaO-SiO2-MgO-FeO-Fe2O3-P2O5 slags and liquid iron, and the results shows that IMCT-L-p model have more accuracy compared with other L, prediction models. The developed IMCT-L-p model can quantitatively calculate the respective contribution of FeO, CaO+FetO and MgO+FetO in the slags. A significant difference of dephosphorziation abilities among FetO, CaO+FetO and MgO+FetO can be found as approximately 0.00%, 99.98%, 0.01%. Meanwhile, the phosphorus in liquid iron can be effectively extracted by CaO+FetO in slags to form complex molecules 3CaO center dot P2O5 which made the main contribution to dephosphorizaiton in CaO-SiO2-MgO-FeO-Fe2O3-P2O8 slags.

KeywordPhosphorous Distribution Mass Action Concentration Structural Units Ion And Molecule Coexistence Theory
SubtypeArticle
Subject AreaMetallurgy & Metallurgical Engineering
WOS HeadingsScience & Technology ; Technology
DOI10.2355/isijinternational.54.756
Indexed BySCI
Language英语
WOS KeywordFeto-(cao+mgo)-(sio2+p2o5) Phosphate Slags ; Hot Metal ; System ; Mgo ; Dephosphorization ; Steel
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000334824200007
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/15254
Collection研究所(批量导入)
Corresponding AuthorLi, Peng-Cheng
Affiliation1.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
2.Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China
3.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Li, Peng-Cheng,Zhang, Jian-Liang. A Prediction Model of Phosphorus Distribution between CaO-SiO2-MgO-FeO-Fe2O3-P2O5 Slags and Liquid Iron (Retracted article. See vol. 54, pg. 2663, 2014)[J]. ISIJ INTERNATIONAL,2014,54(4):756-765.
APA Li, Peng-Cheng,&Zhang, Jian-Liang.(2014).A Prediction Model of Phosphorus Distribution between CaO-SiO2-MgO-FeO-Fe2O3-P2O5 Slags and Liquid Iron (Retracted article. See vol. 54, pg. 2663, 2014).ISIJ INTERNATIONAL,54(4),756-765.
MLA Li, Peng-Cheng,et al."A Prediction Model of Phosphorus Distribution between CaO-SiO2-MgO-FeO-Fe2O3-P2O5 Slags and Liquid Iron (Retracted article. See vol. 54, pg. 2663, 2014)".ISIJ INTERNATIONAL 54.4(2014):756-765.
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