Title: Phosphonates LLE separation of rare earth elements
Application Number: 85102244 Application Date: 1985.04.01
Publication Number: 1007115 Publication Date: 1987.01.17
Approval Pub. Date: Granted Pub. Date: 1988.09.28
International Classifi-cation: C01F17/00,C22B59/00
Applicant(s) Name: Changchun Applied Chemistry Inst., Chinese Academy Address:
Inventor(s) Name: Li Deqian, Wang Zhonghuai
Attorney & Agent: SONG TIANPING CAO GUIZHEN
Abstract:
     Er, Dy, La, Ce, Pr and Na is produced from the ionic rare earth minerals. Owing to the promoting of volume and separation factors of extraction of the rare earth elements and the decreasing of the equilibrium time, rare earth oxides can be obtd. by the process with the following purities: La2O3 > 99.97%, Dy2O3>99%, Pr6O11>99~99.5%, Er2O3>95%, Nd2O3 >97%, CeO2>90% and Ho enriched compound, >60%.
Time: 4