Ca_(3)TiFe_(2)O_(8)的高温热容和冶金性能研究  

High-temperature heat capacity and metallurgical performance of Ca_(3)TiFe_(2)O_(8)

作　　者：曾俊杰 李刚 陈炼 薛钰霄 吕学伟[1] Zeng Junjie;Li Gang;Chen Lian;Xue Yuxiao;LüXuewei(College of Materials Science and Engineering,Chongqing University,Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials,Chongqing400044,China;CISDI-INFO Co.,Ltd.,Chongqing400041,China;Panzhihua Iron and Steel Research Institute Co.,Ltd.,Pangang Group,State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Panzhihua617000,Sichuan,China)

机构地区：[1]重庆大学材料科学与工程学院,钒钛冶金及新材料重庆市重点实验室,重庆400044 [2]中冶赛迪信息技术(重庆)有限公司,重庆400041 [3]攀钢集团攀枝花钢铁研究院有限公司,钒钛资源综合利用国家重点实验室,四川攀枝花617000

出　　处：《钢铁钒钛》2024年第3期141-146,共6页Iron Steel Vanadium Titanium

摘　　要：烧结矿的质量很大程度上取决于其粘结相的特性。为促进钒钛磁铁矿资源在烧结领域的高效利用,对含TiO_(2)的钙铁氧体体系进行了研究。在含钛铁矿烧结矿中发现了Ca_(3)TiFe_(2)O_(8)(CTF)的存在,后经由固态反应成功制备出了CTF,并通过Drop法测定了CTF的高温热容,得到了其高温热容量的拟合函数。同时,还对其冶金性能(熔化性能和还原行为)进行了检测分析。结果表明,CTF的软化温度、熔化温度和流动温度分别为1 418、1 461℃和1 480℃。非等温还原结果表明,CTF被一步还原成Fe、CaO和CaO·TiO_(2),当温度达到1 150℃时,CTF还原完成。The quality of the sintered iron ores is dominated by their bonding phases properties.The calcium ferrite system containing TiO_(2) was investigated to promote the efficient utilization of vanadium and titanium magnetite resources in the field of sintering.In this paper,Ca_(3)TiFe_(2)O_(8)(CFT)was found in titanium-bearing sintering ores,and CTF was successfully prepared by solid-state reaction.The high-temperature heat capacity of CTF was determined by the Drop method,and the corresponding fitting function was obtained.In addition,the metallurgical properties(including melting properties and reduction behavior)of CTF were determined.The results showed that the softening,melting and flowing temperatures of CTF were 1418℃,1461℃ and 1480℃,respectively.The non-isothermal reduction results showed that CTF was reduced to Fe,CaO and CaO·TiO_(2) in one step,and the reduction process of CTF was completed when the temperature reached 1150℃.

关 键 词：烧结 钒钛磁铁矿 Ca_(3)TiFe_(2)O_(8) 高温热容 冶金性能 

分 类 号：TF046[冶金工程—冶金物理化学]