This study provides a fundamental understanding of a cold finger melt crystallization technique by exploring the heat and mass transfer processes of cold finger separation. A series of experiments were performed using a simplified LiCl-CsCl system by varying initial CsCl concentrations (1, 3, 5, and wt%), cold finger cooling rates (, , , and L/min), and separation times (5, 10, 15, and 30 min). | Separation of CsCl from LiCl-CsCl molten salt by cold finger melt crystallization