Ca3TiFe2O8的高温热容和冶金性能研究
High-temperature heat capacity and metallurgical performance of Ca3TiFe2O8
曾俊杰 1李刚 2陈炼 3薛钰霄 1吕学伟1
作者信息
- 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
- 折叠
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TiO2的钙铁氧体体系进行了研究.在含钛铁矿烧结矿中发现了Ca3TiFe2O8(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·TiO2,当温度达到1 150℃时,CTF还原完成.
Abstract
The quality of the sintered iron ores is dominated by their bonding phases properties.The cal-cium ferrite system containing TiO2 was investigated to promote the efficient utilization of vanadium and titanium magnetite resources in the field of sintering.In this paper,Ca3TiFe2O8(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 reduc-tion behavior)of CTF were determined.The results showed that the softening,melting and flowing tem-peratures of CTF were 1 418 ℃,1 461 ℃ and 1 480 ℃,respectively.The non-isothermal reduction res-ults showed that CTF was reduced to Fe,CaO and CaO·TiO2 in one step,and the reduction process of CTF was completed when the temperature reached 1 150 ℃.
关键词
烧结/钒钛磁铁矿/Ca3TiFe2O8/高温热容/冶金性能Key words
sintering/vanadium-titanium magnetite/Ca3TiFe2O8/high-temperature heat capacity/metallurgical properties引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据