SOLVENT EXTRACTION OF RARE EARTH ELEMENTS USING CYANEX~R 572

摘要

Cytec has developed a new organophosphorus based solvent extraction reagent for rare earth separations. The new product, CYANEX 572, has been formulated to allow efficient extraction while minimizing the strip acid requirements. The optimization of formulation strength is expected to significantly reduce the operating costs of these circuits by reducing acid and base usage. Modeling capabilities (similar to those used successfully in Cu and Co/Ni SX) have also been developed to aid in the design and optimization of CYANEX 572 SX circuits. Simulations will be shown comparing extractants.