Combined Physicochemical and Energy Methods to Improve the Recovery of Rare Earth Elements from Eudialyte Concentrate

The parameters for efficient nitric acid leaching were experimentally determined, which ensured the recoveries of Zr and REEs from eudialyte concentrate up to 87.0%–91.7% 76.0%–81.1%, respectively. possibility was shown intensifying process through preliminary energy treatments ensure intensive breakdown mineral complexes grains; as a result, recovery increased by more than 10%. A developed selective 91.5% zirconium 71.2% in form carbonate compounds pregnant solution chemical precipitation well 81.1% 91.7% on hypercrosslinked polystyrene sorbents.