Materials Reports  2020, Vol. 34 Issue (Z2): 315-318 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Environmental Impact Analysis of Neodymium Oxide Produced from Sichuan Bastnaesite |
| CHEN Wenjuan1,2, GONG Xianzheng1,2, GAO Feng1,2, LIU Yu1,2, SUN Boxue1,2, LI Xiaoqing1,2, WANG Zhihong1,2
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1 Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124,China
2 National Engineering Laboratory for Industrial Big-data Application Technology, Beijing 100124,China |
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Abstract Bastnaesite of Sichuan province is a kind of significant light rare earth ore in China, which contains cerium, lanthanum, neodymium, praseodymium elements. The maximum consumption amounts in rare earth materials filed are rare earth permenant magnets, and neodymium oxide is the main raw material for rare earth permenant magnets production. In this paper, life cycle inventory of neodymium oxide was completed based on the life cycle assessment method for technique process, system boundary included mining, beneficiation, smelting and separation, oxidizing roast, combined with Chinese rare earth resource depletion factors calculated, life cycle assessment for neodymium oxide was researched. Furthermore, the environment impact hotspot and source was identified, it will provide a theoretical reference for cleaner production of neodymium oxide.
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Published: 08 January 2021
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| Fund:This work was financially supported by National Engineering Laboratory for Industrial Big-data Application Technology, the National Key Research and Develo-pment Program of China(2018YFF0215706). |
| About author:: Wenjuan Chen received her Ph.D. degree in materials science and engineering from Beijing University of Technology in Jul. 2019. She has published 5 SCI, EI papers and applied one national invention patent as the first author or corresponding author. She co-wrote one book. She has been awarded the prize of National Award for Science and Technology. Her research interests focus on rare earth material green production and life cycle assessment. |
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