Interaction between Barium Oxide and Barium Containing Chloride Melt

Thermal analysis was applied to determine the liquidus temperatures in the NaCl–KCl–BaCl –BaO system, with BaO concentration varied from 0 to 6 mole%. The temperature dependence of the BaO solubility in the NaCl–KCl–BaCl eutectic melt was investigated; the thermodynamic parameters of BaO dissolution were calculated. The caloric effects of melting of the NaCl–KCl–BaCl eutectic with barium oxide and barium oxychloride additions were studied. The type, morphology, and composition of oxychloride ionic groupings in the melt were determined in situ using Raman spectroscopy.