%0 Dataset
%T Dataset of Preparation Process for High-purity Rare Earth Oxides
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/5a4eed46-c6e3-4428-b085-66db337a5659
%W NCDC
%A yang guang
%A zhang qing ping
%A guan zhong xiang
%A yu yuan xuan
%K High-purity rare earth;impurity content;radioactivity
%X In response to the problems of limited variety, low purity, and difficulty in deep purification and impurity removal of domestic high-end rare earth oxide and halide reagents, a systematic study was conducted on the mass transfer mechanism of key impurity elements in the deep purification and impurity removal process of rare earth oxide, as well as the deep purification and impurity removal technology, to form a kilogram scale preparation capability.   1. A new type of ion exchange separation system capable of applying external fields (temperature field, force field, etc.) has been developed, with ytterbium oxide as the research target. The resin characteristics, feed flow rate and concentration during the loading and rinsing process of purifying ytterbium oxide by ion exchange separation method have been investigated pH、 The regulation rules of separation coefficients between rare earth elements under different institutional conditions such as temperature and pressure have clarified the ion exchange characteristics between different rare earth elements, especially between adjacent rare earth elements, achieving deep removal of rare earth impurities.   2. Two key sensitive impurity removal technologies have been developed based on different new modified adsorption materials. The high selective adsorption ability of the adsorption materials for impurity elements such as Co, Ni, Mn, Th, and U is coupled with the competitive complexation effect of chelating agents on metal elements to achieve directional removal of key sensitive impurities. By comparing the directional impurity removal performance of adsorption materials through static and dynamic column adsorption/desorption test systems, key sensitive impurity removal technologies have been broken through, achieving directional removal of sensitive impurities (Co, Ni, Mn, Th, U, etc.).   3. The system investigated the occurrence behavior and mechanism of alkaline earth metal impurities such as calcium and magnesium,