Liquidus temperature study of LiF–NaF–KF-based melts simulating the fuel salt of a molten-salt reactor for Np, Am, Cm transmutation

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发表日期：

2024年7月1日

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M. N. Belonogov,
I. A. Volkov,
N. D. Dyrda,
G. N. Rykovanov,
I. V. Sannikov,
P. A. Sannikova,
R. R. Fazylov,
D. V. Khmelnitsky,
V. A. Shelan

摘要

Experiments were carried out to determine the liquidus temperature of 46.5LiF–11.5NaF–42KF-based melts simulating the fuel salt of a molten-salt burner operating in a Np, Am, Cm transmutation mode without the consumption of plutonium. The liquidus temperature was determined by differential scanning calorimetry; the melt composition was monitored by atomic emission, alpha, and gamma spectrometry. Melts containing PuF₃ and UF₄, as well as NdF₃ and NiF₂ simulating the products of fission and corrosion of structural materials were studied. For the actinide fluoride mole fraction of 5–15 mol% in the LiF–NaF–KF-based fuel salt in the presence of fission and corrosion products, the liquidus temperature of the melts was equal to 485–580 °C.