Efficient purification of Rare Earth

Rare earth is an important strategic non-renewable resources , although large reserves of rare earth resources , but the rare earth resource utilization is low, polluted mining and smelting process , the key high-purity product is still limited to people, seriously affected China 's rare earth industry may sustainable development. Rare efficient purification problem as a constraint to the development of China's rare earth industry, a major scientific problems. Recently, the 973 major projects planned "rare earth separation efficient use of resources and the scientific basis for the green " start at Peking University . The project is aimed at the development of rare earth resources and purification of the key issues , research contents include : research of new extraction solvent extraction performance and share -effect relationship, establish a new extractant molecule design model ; research typical of rare earth ore composition, structure and surface state and its impact on sorting and decomposition of the impact of the establishment of efficient and clean sorting decomposition technique ; microscopic study of rare earth extraction process , the establishment of the interface thermodynamic equilibrium and kinetic mass transfer equations ; study of rare earth impurities in the purification process in the migration law for critical high-purity rare earth lay the foundation for the preparation of such materials . One of the goals is to filter out the indicators better than the current generic P507 new rare earth extraction agent. Project budget 85 million yuan , were set seven topics : efficient rare earth extractant Molecular Design, Synthesis and Properties ; extraction process of interfacial molecular / ionic interactions ; new and efficient extraction equipment design, simulation ; complex systems theory and cascade extraction rare green separation processes ; anhydrous rare earth metal halide and high purification processes such as the scientific basis .

Projects by Peking University Professor Yan Chunhua as chief scientist , the project was based on the Secretary as the most important 973 category A projects , the implementation process will be more focused major scientific issues more prominent scientific objectives , basic research will also be highly concerned about the project company the progress of the project to strengthen the tracking and management .


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