摘要
采用差热分析法测定KCl-NaCl-NaF-(TiO2)体系的初晶温度,根据测定的数据得出了KCl-NaClNa F-(TiO2)熔盐体系初晶温度,分析了组元NaF对KCl-NaCl-NaF-(TiO2)体系初晶温度的影响。通过HSC热力学计算出该体系在高温下的反应,并通过XRD物相分析出在KCl-NaCl-NaF体系下TiO2的溶解机理。结果表明:KCl-NaCl-NaF-(TiO2)体系初晶温度随着组元Na F摩尔含量的增加而增大,同时通过对熔盐的X射线衍射分析及各物质间反应的热力学分析,表明TiO2对KCl-NaCl-NaF体系初晶温度影响很小,TiO2在KCl-NaCl-NaF体系的溶解行为为化学溶解。
The primary crystal temperature of KCl-NaCl-NaF-(TiO2) system was determined by differential thermal analysis.According to the measured data,the initial temperature of KCl-NaCl-NaF-(TiO2) molten salt system was obtained,and the influence of NaF on the initial temperature of KCl-NaCl-NaF-(TiO2) system was analyzed.The reaction of the system was calculated by HSC thermodynamics at high temperature,and the dissolution mechanism of TiO2 in the KCl-NaCl-NaF system was analyzed by XRD phase.The results show that KCl-NaCl-NaF-(TiO2) system of liquidus temperature with increasing element molar concentration of Na F increases,while the thermodynamic X ray diffraction analysis of molten salt and the material response thermodynamics analysis showed that the influence of the liquidus temperature of TiO2 in the KCl-NaCl-NaF system is little,the dissolution behavior of TiO2 in KCl-NaCl-NaF system is chemical dissolution.
作者
郑天新
梁精龙
李慧
杨宇
王斌
Zheng Tianxin;Liang Jinglong;Li Hui;Yang Yu;Wang Bin(College of Metallurgy and Energy,North China University of Technology,Tangshan,Hebei,China)
出处
《矿产综合利用》
CAS
北大核心
2019年第3期141-145,共5页
Multipurpose Utilization of Mineral Resources
基金
国家自然科学基金项目(51474093)课题名称:含钛高炉渣制备钢表面钛防腐涂层基础研究
关键词
熔盐
初晶温度
差热
二氧化钛
Molten salt energy storage
Solar thermal power generation
Molten salt electrolyte
Molten salt reactor
