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Economical and Technical Indices of decomposition Processes of Typical Rare Earth minerals in China

Journal of Rare Earths 2006年第4期24卷 428-428页

作者： Wang Weisheng Wang Songling Jia Jiangtao Zhang Zhaobing College of Resources and Environments Wuhan Institute of Technology Wuhan 470070 China Beijing Institute of Founder Rare Earth Sci. ＆ Tech. Co. Ltd. Beijing 100085 China Gansu Rare Earth Group Co. Ltd. Baiyin 730922 China

The typical treatment processes we of main rare earth resources in China, especially the economical and technical indices of the minerals decomposition of such as ionic adsorptive rare earth deposit ore, bastnasite and mixed with monazite in Baotou, was presented. The dispersive ionic adsorptive rare earth deposit ore, which is enriched on valuable middle and heavy elements, concentrated by bicarbonate precipitation after exchanging with ammonium sulphate solution. Planting and waste liquid should be focused. Bastnasite and/or monazite, which is enriched light rare earth, centralized with high content and capacity,concentrated by gravimetric, magnetic, floating, then decomposed by calcinations and leaching. Waste liquid, gases and dregs should be treated properly. Investors interested in RE industry can find out the technical and economic characters and history of various RE minerals. Engineers and workers in RE industry can also find the differences of the plants, so as to make more efforts on improving management. However, solving environment protection problems for each process should be committed extraordinarily in order to make a sustainable development of RE industry.

关键词： mineral decomposition economical and technique indices environment protection rare earths

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