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Density of lithium fluoride–lithium carbonate-based molten salts

Xiao-Wen Song, Wen-Tao Deng, Zheng-Hao Liu, Zhong-Ning Shi, Bing-Liang Gao, Xian-Wei Hu, and Zhao-Wen Wang

School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

 

E-mail: zhshi@mail.neu.edu.cn

Abstract: The density of the LiF-Li2CO3 melts system was measured using the Archimedean method. Using the quadratic regression orthogonal design with two factors, a regression equation for the density of LiF-Li2CO3 melts was obtained in which the concentration of LiF and temperature were considered. The results indicated that the density of the LiF-Li2CO3 melts decreased with either increasing the concentration of LiF or increasing temperature; a linear relation was observed between density and temperature. In addition, the influences of NaF, KF, NaCl, and KCl additives on the densities of the given systems were studied. The addition of NaF and KF increased the density of the melts, whereas NaCl and KCl resulted in an initial increase and subsequent decrease with an increasing additive concentration. The density attained a maximum at NaCl and KCl mass fraction of approximately 15 %.

Keywords: lithium fluoride – lithium carbonate – additives – density

Full paper is available at www.springerlink.com.

DOI: 10.1515/chempap-2015-0108

 

Chemical Papers 69 (8) 1101–1107 (2015)

Tuesday, October 15, 2019

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