Separation of rare earth elements by zone recrystallization

2nd International Symposium on Fundamental Aspects of Rare-earth Elements Mining and Separation and Modern Materials Engineering

材料科学;物理学

Akimov, D.V.^1 ; Dyachenko, A.N.^1 ; Egorov, N.B.^1 ; Zhuravlev, N.A.^1

Physical Technical Institute, National Research Tomsk Polytechnic University, Lenina street 30, Tomsk

634050, Russia^1

关键词: Hydrated ions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/112/1/012014/pdf
DOI  :  10.1088/1757-899X/112/1/012014

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The separation of holmium and cerium by zone recrystallization using a mixture of HoCl3•6H2O and CeCl3•6H2O was investigated. It is shown that holmium is enriched at the end of the crystal that the recrystallization zone moves to, while cerium is concentrated in the primary solidification zone. The possible reasons for the experimentally observed distribution of hydrated ions of cerium and holmium along the length of the ingot are discussed. Also the coefficients of enrichment and separation are calculated.