The method to extract and separate mixed rare earth for high-pure and single product comprises: taking counter-current displacement and extraction to the Ce-contained organic phase and some PrCl3-contained solution with parameters as 20-50 stages and the ratio between organic phase and water as 5-10 to obtain the CeCl3-contained solution E and Pr-contained organic phase; depositing, filtering, and igniting to obtain the 99.9-99.995% high-pure product with La2O3, CeO2, Pr6O11 and Nd2O3 and the enriched middle-heavy rare-earth with Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y. This invention reduce whole acid and base consumption more than 37%, improves product quality and stability, and fit to industrial production. |