화학공학소재연구정보센터
Chemistry Letters, Vol.44, No.7, 1028-1030, 2015
Separation of Neodymium and Dysprosium by Flocculation Method for the Recovery of Rare-earth Elements from Waste Magnets
The flocculation method using polymer materials and water solvent was applied to the separation of Nd and Dy. Dy was precipitated preferentially from Dy and Nd mixture solution by poly(allylamine) and adipic acid as flocculation agents. The recovery ratio of Dy was 80%, and the purity of Dy was 76% by optimization of the molar ratio of the amino group of poly(allylamine) to rare-earth metal ions.