Yongda Li , Gang Li , Ningyu Zhang , Guishang Pei , Yuxiao Xue , Xuewei Lv
{"title":"Ca3TiFe2O8 的冶金性能","authors":"Yongda Li , Gang Li , Ningyu Zhang , Guishang Pei , Yuxiao Xue , Xuewei Lv","doi":"10.1016/j.calphad.2024.102671","DOIUrl":null,"url":null,"abstract":"<div><p>Ca<sub>3</sub>TiFe<sub>2</sub>O<sub>8</sub> (abbreviated as CTF), which is a significant mineral phase in the sinter of titanium-containing iron ore, was successfully prepared by solid-state reaction (calcined at 1553 K for 24 h) by using analytical reagents in this study. The metallurgical performance (melting performance and reduction behavior) was systemically characterized and the enthalpy change data of CTF was tested. The results show that softening temperature, melting temperature, and flowing temperature of CTF were 1691 K, 1734 K, and 1753 K, respectively. The non-isothermal reduction results revealed that CTF was reduced to Fe, CaO, and perovskite in a single step, and the CTF reduction was completed when the temperature reached 1423 K. The results of isothermal reduction shows that the reduction degree of CTF was 89% when reduced at 1173 K for 79.2 min, and the order of reduction performance was Fe<sub>2</sub>O<sub>3</sub> > Fe<sub>3</sub>O<sub>4</sub> > CaO∙2Fe<sub>2</sub>O<sub>3</sub> > CaO∙Fe<sub>2</sub>O<sub>3</sub>> Ca<sub>3</sub>TiFe<sub>2</sub>O<sub>8</sub>> 2CaO∙Fe<sub>2</sub>O<sub>3</sub>> Ca<sub>3</sub>Fe<sub>2</sub>Si<sub>1.58</sub>Ti<sub>1.42</sub>O<sub>12</sub>.</p></div>","PeriodicalId":9436,"journal":{"name":"Calphad-computer Coupling of Phase Diagrams and Thermochemistry","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Metallurgical performance of Ca3TiFe2O8\",\"authors\":\"Yongda Li , Gang Li , Ningyu Zhang , Guishang Pei , Yuxiao Xue , Xuewei Lv\",\"doi\":\"10.1016/j.calphad.2024.102671\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Ca<sub>3</sub>TiFe<sub>2</sub>O<sub>8</sub> (abbreviated as CTF), which is a significant mineral phase in the sinter of titanium-containing iron ore, was successfully prepared by solid-state reaction (calcined at 1553 K for 24 h) by using analytical reagents in this study. The metallurgical performance (melting performance and reduction behavior) was systemically characterized and the enthalpy change data of CTF was tested. The results show that softening temperature, melting temperature, and flowing temperature of CTF were 1691 K, 1734 K, and 1753 K, respectively. The non-isothermal reduction results revealed that CTF was reduced to Fe, CaO, and perovskite in a single step, and the CTF reduction was completed when the temperature reached 1423 K. The results of isothermal reduction shows that the reduction degree of CTF was 89% when reduced at 1173 K for 79.2 min, and the order of reduction performance was Fe<sub>2</sub>O<sub>3</sub> > Fe<sub>3</sub>O<sub>4</sub> > CaO∙2Fe<sub>2</sub>O<sub>3</sub> > CaO∙Fe<sub>2</sub>O<sub>3</sub>> Ca<sub>3</sub>TiFe<sub>2</sub>O<sub>8</sub>> 2CaO∙Fe<sub>2</sub>O<sub>3</sub>> Ca<sub>3</sub>Fe<sub>2</sub>Si<sub>1.58</sub>Ti<sub>1.42</sub>O<sub>12</sub>.</p></div>\",\"PeriodicalId\":9436,\"journal\":{\"name\":\"Calphad-computer Coupling of Phase Diagrams and Thermochemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-03-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Calphad-computer Coupling of Phase Diagrams and Thermochemistry\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0364591624000130\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Calphad-computer Coupling of Phase Diagrams and Thermochemistry","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0364591624000130","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Ca3TiFe2O8 (abbreviated as CTF), which is a significant mineral phase in the sinter of titanium-containing iron ore, was successfully prepared by solid-state reaction (calcined at 1553 K for 24 h) by using analytical reagents in this study. The metallurgical performance (melting performance and reduction behavior) was systemically characterized and the enthalpy change data of CTF was tested. The results show that softening temperature, melting temperature, and flowing temperature of CTF were 1691 K, 1734 K, and 1753 K, respectively. The non-isothermal reduction results revealed that CTF was reduced to Fe, CaO, and perovskite in a single step, and the CTF reduction was completed when the temperature reached 1423 K. The results of isothermal reduction shows that the reduction degree of CTF was 89% when reduced at 1173 K for 79.2 min, and the order of reduction performance was Fe2O3 > Fe3O4 > CaO∙2Fe2O3 > CaO∙Fe2O3> Ca3TiFe2O8> 2CaO∙Fe2O3> Ca3Fe2Si1.58Ti1.42O12.
期刊介绍：
The design of industrial processes requires reliable thermodynamic data. CALPHAD (Computer Coupling of Phase Diagrams and Thermochemistry) aims to promote computational thermodynamics through development of models to represent thermodynamic properties for various phases which permit prediction of properties of multicomponent systems from those of binary and ternary subsystems, critical assessment of data and their incorporation into self-consistent databases, development of software to optimize and derive thermodynamic parameters and the development and use of databanks for calculations to improve understanding of various industrial and technological processes. This work is disseminated through the CALPHAD journal and its annual conference.
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