Figure 3: Binary lanthanide separation models and results.
From: Rare earth separations by selective borate crystallization
(a) Depiction of lanthanide separation strategies (top: solid/aqueous separation for Nd/Sm; bottom: solid/solid separation for Nd/Dy) based on the enhanced difference for crystallization products; (b) photos showing the process of selective flotation in the Nd/Dy solid/solid separation experiment; (c) separation results of Nd/Sm crystallization experiment (I, II and III columns represent the molar distribution of Nd/Sm in the starting material, NdBOCl-2 crystals and wash solutions, receptively); (d) separation results of Nd/Dy crystallization experiment (IV, V, VI and VII columns represent the molar distribution of Nd/Dy in the starting material, NdBOCl-2 crystals, DyBOCl-5/DyBOCl-6 crystals and wash solutions, respectively).
