高温处理对LiNO3-NaNO3-KNO3熔盐固相线温度的影响

doi:10.12028/j.issn.2095-4239.2017.0039

储能科学与技术 ›› 2017, Vol. 6 ›› Issue (5): 1094-1098.doi: 10.12028/j.issn.2095-4239.2017.0039

高温处理对LiNO3-NaNO3-KNO3熔盐固相线温度的影响

程晓敏1, 2，徐凯1，朱闯1，喻国铭2，刘志2

1武汉理工大学材料科学与工程学院，湖北武汉 430070；2黄冈师范学院，湖北黄冈 438000

收稿日期:2017-04-12 修回日期:2017-05-15 出版日期:2017-09-01 发布日期:2017-09-01
通讯作者: 程晓敏（1964—），男，博士，教授，研究方向为高性能储热材料，E-mail：chengxm@whut.edu.cn。
基金资助:
国家科技支撑计划（2012BAA05B05），湖北省科技支撑计划（2015BAA111）项目，中央高校基本科研业务费专项资金（WUT2017II23GX）。

Inﬂuence of heat treatment on solidus temperature of LiNO3-NaNO3-KNO3 molten salt

CHENG Xiaomin1,2, XU Kai1, ZHU Chuang1, YU Guoming2, LIU Zhi2

1School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China; 2School of Mechanical and Electrical Engineering, Huanggang Normal University, Huanggang 438000, Hubei, China

Received:2017-04-12 Revised:2017-05-15 Online:2017-09-01 Published:2017-09-01

摘要/Abstract

摘要： 本文采用静态熔融法制备了LiNO3-NaNO3-KNO3三元硝酸盐，并在520 ℃、680 ℃和720 ℃下对其进行了高温处理，研究了高温处理对其固相线温度的影响。采用差示扫描量热仪（DSC）和X射线衍射仪（XRD）对样品的热物性能和物相成分进行了表征。结果表明，在680 ℃下保温2 h的样品固相线温度最低，为63.0 ℃，其物相成分中出现了碱金属氧化物和亚硝酸盐。

关键词: 硝酸盐, 储热材料, 传热介质, 固相线温度, 高温处理

Abstract: LiNO3-NaNO3-KNO3 salt was prepared by static melting method. It was calcinated at 520 ℃, 680 ℃ and 720 ℃ for different time to investigate the influence of heat treatment on solidus temperature of the salt. Differential Scanning calorimeter (DSC) and X-ray diffraction (XRD) were used to characterize the thermo-physical properties and phase. Results show that the solidus temperature of the sample was lowered to 63.0 ℃ after treated at 680 ℃ for 2 h, while alkali metal oxides and nitrite were found.

Key words: nitrate, thermal storage material, heat-transfer medium, solidus temperature, heat treatment

程晓敏1, 2，徐凯1，朱闯1，喻国铭2，刘志2. 高温处理对LiNO3-NaNO3-KNO3熔盐固相线温度的影响[J]. 储能科学与技术, 2017, 6(5): 1094-1098.

CHENG Xiaomin1,2, XU Kai1, ZHU Chuang1, YU Guoming2, LIU Zhi2. Inﬂuence of heat treatment on solidus temperature of LiNO3-NaNO3-KNO3 molten salt[J]. Energy Storage Science and Technology, 2017, 6(5): 1094-1098.

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高温处理对LiNO3-NaNO3-KNO3熔盐固相线温度的影响

Inﬂuence of heat treatment on solidus temperature of LiNO3-NaNO3-KNO3 molten salt

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