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Enrichment Mechanism of Phosphate in CaO-SiO2-FeO-Fe2O3-P2O5 Steelmaking Slags
Alternative TitleMetall. Mater. Trans. B-Proc. Metall. Mater. Proc. Sci.
Li, Jin-Yan1,2; Zhang, Mei1,2; Guo, Min1,2; Yang, Xue-Min3
2014-10-01
Source PublicationMETALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
ISSN1073-5615
Volume45Issue:5Pages:1666-1682
AbstractThe phosphate-enrichment behavior has experimentally been investigated in CaO-SiO2-FeO-Fe2O3-P2O5 steelmaking slags. The reaction ability of structural units in the slags has been represented the mass action concentration from the developed ion and molecule coexistence theory (IMCT)- model based on the IMCT. The defined enrichment possibility and enrichment degree of solid solutions containing P2O5 from the developed IMCT- model have been verified from the experimental results. The effects of binary basicity, the mass percentage ratio , and mass percentage of P2O5 in the initial slags on phosphate-enrichment behavior in the slags has also been discussed. The results show that the P2O5 component can easily be bonded by CaO to form tricalcium phosphate 3 CaO center dot P2O5, and the formed 3CaO center dot P2O5 can react with the produced dicalcium silicate 2CaO center dot SiO2 to generate solid-solution 2CaO center dot SiO2-3CaO center dot P2O5 under fixed cooling conditions. The maximum value of the defined enrichment degree of solid-solution 2CaO center dot SiO2-3CaO center dot P2O5 is obtained as 0.844 under conditions of binary basicity as 2.5 and the mass percentage ratio as 0.955 at fixed cooling conditions.; The phosphate-enrichment behavior has experimentally been investigated in CaO-SiO2-FeO-Fe2O3-P2O5 steelmaking slags. The reaction ability of structural units in the slags has been represented the mass action concentration from the developed ion and molecule coexistence theory (IMCT)- model based on the IMCT. The defined enrichment possibility and enrichment degree of solid solutions containing P2O5 from the developed IMCT- model have been verified from the experimental results. The effects of binary basicity, the mass percentage ratio , and mass percentage of P2O5 in the initial slags on phosphate-enrichment behavior in the slags has also been discussed. The results show that the P2O5 component can easily be bonded by CaO to form tricalcium phosphate 3 CaO center dot P2O5, and the formed 3CaO center dot P2O5 can react with the produced dicalcium silicate 2CaO center dot SiO2 to generate solid-solution 2CaO center dot SiO2-3CaO center dot P2O5 under fixed cooling conditions. The maximum value of the defined enrichment degree of solid-solution 2CaO center dot SiO2-3CaO center dot P2O5 is obtained as 0.844 under conditions of binary basicity as 2.5 and the mass percentage ratio as 0.955 at fixed cooling conditions.
KeywordQuasi-chemical Model Feo-containing Slags Thermodynamic Activities Dephosphorization Slag Magnetic Separation Cao-sio2-feto Slags Iron-oxide 1573 k Phosphorus Phase
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1007/s11663-014-0085-0
URL查看原文
Indexed BySCI
Language英语
WOS KeywordQUASI-CHEMICAL MODEL ; FEO-CONTAINING SLAGS ; THERMODYNAMIC ACTIVITIES ; DEPHOSPHORIZATION SLAG ; MAGNETIC SEPARATION ; CAO-SIO2-FETO SLAGS ; IRON-OXIDE ; 1573 K ; PHOSPHORUS ; PHASE
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000342443700012
Citation statistics
Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/11648
Collection研究所(批量导入)
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, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Li, Jin-Yan,Zhang, Mei,Guo, Min,et al. Enrichment Mechanism of Phosphate in CaO-SiO2-FeO-Fe2O3-P2O5 Steelmaking Slags[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2014,45(5):1666-1682.
APA Li, Jin-Yan,Zhang, Mei,Guo, Min,&Yang, Xue-Min.(2014).Enrichment Mechanism of Phosphate in CaO-SiO2-FeO-Fe2O3-P2O5 Steelmaking Slags.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,45(5),1666-1682.
MLA Li, Jin-Yan,et al."Enrichment Mechanism of Phosphate in CaO-SiO2-FeO-Fe2O3-P2O5 Steelmaking Slags".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 45.5(2014):1666-1682.
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