Phase diagram prediction of the LiNO_3-NaNO_3-KNO_3 ternary system and its thermodynamic performance

The symmetric Kohler model was applied to predict phase diagram of the LiNO3-NaNO3-KNO3 ternary system,in which one ternary eutectic point(its molar fractions composition:x(LiNO3)=0.388,x(NaNO3)=0.102,x(KNO3)=0.510)with low melting temperature was found to be 395.50 K.The DSC and TG curves of the predicted eutectic point were measured and the results showed that the melting temperature was 397.32 K and the thermal stability temperature was 868.62 K,and the predicted molten salts mixture was expected to be used in concentrating solar power and nuclear energy power plants.