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Prediction Model of Sulfide Capacity for CaO-FeO-Fe2O3-Al2O3-P2O5 Slags in a Large Variation Range of Oxygen Potential Based on the Ion and Molecule Coexistence Theory
Alternative TitleMetall. Mater. Trans. B-Proc. Metall. Mater. Proc. Sci.
Yang, Xue-Min1; Li, Jin-Yan2,3; Zhang, Meng3,4; Chai, Guo-Min3; Zhang, Jian2
2014-12-01
Source PublicationMETALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
ISSN1073-5615
Volume45Issue:6Pages:2118-2137
AbstractA thermodynamic model for predicting sulfide capacity of CaO-FeO-Fe2O3-Al2O3-P2O5 slags in a large variation range of oxygen potential corresponding to mass percentage of Fe (t) O from 1.88 to 55.50 pct, i.e., IMCT- model, has been developed by coupling with the deduced desulfurization mechanism of the slags based on the ion and molecule coexistence theory (IMCT). The developed IMCT- model has been verified through comparing the determined sulfide capacity after Ban-ya et al.[20] with the calculated by the developed IMCT- model and the calculated by the reported sulfide capacity models such as the KTH model. Mass percentage of Fe (t) O as 6.75 pct corresponding to the mass action concentration of Fe (t) O as 0.0637 or oxygen partial as 2.27 x 10(-6) Pa is the criterion for distinguishing reducing and oxidizing zones for the slags. Sulfide capacity of the slags in reducing zone is controlled by reaction ability of CaO regardless of slag oxidization ability. However, sulfide capacity of the slags in oxidizing zone shows an obvious increase tendency with the increasing of slag oxidization ability. Sulfide capacity of the slags in reducing zone keeps almost constant with variation of the simplified complex basicity (pct CaO)/((pct Al2O3) + (pct P2O5)), or optical basicity, or the mass action concentration ratios of N (FeO)/N (CaO), , , and . Sulfide capacity of the slags in oxidizing zone shows an obvious increase with the increasing of the simplified complex basicity (pct CaO)/((pct Al2O3) + (pct P2O5)) or optical basicity, or the aforementioned mass action concentration ratios. Thus, the aforementioned mass action concentration ratios and the corresponding mass percentage ratios of various iron oxides to basic oxide CaO are recommended to represent the comprehensive effect of various iron oxides and basic oxide CaO on sulfide capacity of the slags.; A thermodynamic model for predicting sulfide capacity of CaO-FeO-Fe2O3-Al2O3-P2O5 slags in a large variation range of oxygen potential corresponding to mass percentage of Fe (t) O from 1.88 to 55.50 pct, i.e., IMCT- model, has been developed by coupling with the deduced desulfurization mechanism of the slags based on the ion and molecule coexistence theory (IMCT). The developed IMCT- model has been verified through comparing the determined sulfide capacity after Ban-ya et al.[20] with the calculated by the developed IMCT- model and the calculated by the reported sulfide capacity models such as the KTH model. Mass percentage of Fe (t) O as 6.75 pct corresponding to the mass action concentration of Fe (t) O as 0.0637 or oxygen partial as 2.27 x 10(-6) Pa is the criterion for distinguishing reducing and oxidizing zones for the slags. Sulfide capacity of the slags in reducing zone is controlled by reaction ability of CaO regardless of slag oxidization ability. However, sulfide capacity of the slags in oxidizing zone shows an obvious increase tendency with the increasing of slag oxidization ability. Sulfide capacity of the slags in reducing zone keeps almost constant with variation of the simplified complex basicity (pct CaO)/((pct Al2O3) + (pct P2O5)), or optical basicity, or the mass action concentration ratios of N (FeO)/N (CaO), , , and . Sulfide capacity of the slags in oxidizing zone shows an obvious increase with the increasing of the simplified complex basicity (pct CaO)/((pct Al2O3) + (pct P2O5)) or optical basicity, or the aforementioned mass action concentration ratios. Thus, the aforementioned mass action concentration ratios and the corresponding mass percentage ratios of various iron oxides to basic oxide CaO are recommended to represent the comprehensive effect of various iron oxides and basic oxide CaO on sulfide capacity of the slags.
KeywordFeto-(cao+mgo)-(sio2+p2o5) Phosphate Slags Cao-sio2-mgo-al2o3 Ironmaking Slags Blast-furnace Slags Molten Pig-iron Lime-based Flux Liquid-iron Hot Metal Sulfur Distribution Soda Ash Simultaneous Dephosphorization
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1007/s11663-014-0122-z
URL查看原文
Indexed BySCI
Language英语
WOS KeywordFETO-(CAO+MGO)-(SIO2+P2O5) PHOSPHATE SLAGS ; CAO-SIO2-MGO-AL2O3 IRONMAKING SLAGS ; BLAST-FURNACE SLAGS ; MOLTEN PIG-IRON ; LIME-BASED FLUX ; LIQUID-IRON ; HOT METAL ; SULFUR DISTRIBUTION ; SODA ASH ; SIMULTANEOUS DEPHOSPHORIZATION
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000345089900019
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11875
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
4.Beijing Met Equipment Res & Design Inst Co Ltd, China Met Grp Corp, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Yang, Xue-Min,Li, Jin-Yan,Zhang, Meng,et al. Prediction Model of Sulfide Capacity for CaO-FeO-Fe2O3-Al2O3-P2O5 Slags in a Large Variation Range of Oxygen Potential Based on the Ion and Molecule Coexistence Theory[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2014,45(6):2118-2137.
APA Yang, Xue-Min,Li, Jin-Yan,Zhang, Meng,Chai, Guo-Min,&Zhang, Jian.(2014).Prediction Model of Sulfide Capacity for CaO-FeO-Fe2O3-Al2O3-P2O5 Slags in a Large Variation Range of Oxygen Potential Based on the Ion and Molecule Coexistence Theory.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,45(6),2118-2137.
MLA Yang, Xue-Min,et al."Prediction Model of Sulfide Capacity for CaO-FeO-Fe2O3-Al2O3-P2O5 Slags in a Large Variation Range of Oxygen Potential Based on the Ion and Molecule Coexistence Theory".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 45.6(2014):2118-2137.
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