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

doi:10.12028/j.issn.2095-4239.2017.0039

Abstract

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

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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