Towards cleaner production of rare earth elements from bastnaesite in China
Towards cleaner production of rare earth elements from bastnaesite in China
复制标题
中国迈向氟碳铈矿稀土元素的清洁生产
DOI：
10.1016/j.jclepro.2017.07.107
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发表时间：
2017-11
影响因子：
11.1
通讯作者：
Long Zhiqi
中科院分区：
文献类型：
--
作者：
Wang Liangshi;Huang Xiaowei;Yu Ying;Zhao Longsheng;Wang Chunmei;Feng Zongyu;Cui Dali;Long Zhiqi
稀土元素（RE）由于其独特的磁性，光学和电学性质，在许多高科技应用中发挥着关键作用。中国拥有丰富的稀土资源，年产量为10万至15万吨，占世界总产量的90%以上。氟碳铈矿是我国四大稀土矿之一。随着稀土产业的快速发展，资源和环境问题越来越引起世界各国公众的关注。中国政府和中国研究人员一直致力于通过积极解决资源和环境问题来建立高标准。综述了近年来我国氟碳铈矿环境友好稀土分离及工业应用的研究进展，包括氧化焙烧-酸浸工艺、硫酸焙烧-水浸工艺、烧碱分解工艺、氯化工艺、氯化铵焙烧工艺、超链接萃取工艺、平衡酸度控制技术及其他改进工艺。这些进展对世界稀土工业产生了重要影响，也为我国稀土工业的技术发展指明了方向。此外，还简要介绍了中国政府近期出台的稀土行业清洁生产政策，为稀土行业清洁生产先进技术的推广应用提供了充分的政策支持。
Rare earth elements (REEs) play a critical role in numerous high-tech applications owing to their unique magnetic, optical, and electrical properties. China is widely recognized by its abundant rare earth resources with the annual output of 100,000–150,000 tonnes, which accounts for over 90% of the world’s total production. Bastnaesite is one of the four rare earth minerals in China. With the rapid development of rare earth industry, resources and environmental issues have attracted more and more public attention around the world. The Chinese government, together with the Chinese researchers, have been devoted to establish a high standard by proactively addressing resources and environmental issues. This review gives an overview of the recent progresses in the environmentally friendly rare earth separation and industrial application of bastnaesite in China, including oxidation roasting-acid leaching process, sulfuric acid bake-water leaching process, caustic soda decomposition process, chlorination process, NH4Cl roasting technique, hyperlink extraction process, equilibrium acidity controlling technique, and some other improved processes. These progresses have exerted important impacts on the wolrd’s rare earth industry and futher pointed out the future directions for the technical development of the rare earth industry in China. Moreover, the recent policies on the cleaner production of rare earth industry issued by the Chinese government have been briefly discussed, which provides sufficient policy support for the generalization and application of the advanced cleaner production technologies in the rare earth industry.
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