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Environmental Impacts of Rare Earth Mining and Separation Based on Eudialyte: A New European Way

机译：基于Eudialyte的稀土开采与分离对环境的影响：一种欧洲新途径

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Neodymium and dysprosium are two rare earth elements (REEs), out of a group of 17 elements. Due to their unique properties, REEs gained increasing importance in many new technologies, like wind turbines, batteries, etc. However, the production of REEs requires high material and energy consumption and is associated with considerable environmental burdens. Due to the strong dependency of European industry on Chinese REE exports, this paper presents a possible European production chain of REEs based on the mineral eudialyte found in Norra K?rr (Sweden). This European production is compared to a Chinese route, as China produces more than 85% of today’s REEs. Bayan Obo as the largest REE deposit in China is considered as the reference system. Using the life cycle assessment method, the environmental impacts of both production lines are assessed. This study presents newly-estimated data of a possible Swedish eudialyte-based production route for Europe. Results for the new eudialyte process route show reduced environmental burdens, although the total REE content in eudialyte is much smaller than in the Bayan Obo deposit. Especially, the results for dysprosium from eudialyte outreach those for Bayan Obo due to the higher content of heavy rare earth elements.
机译：钕和是17种元素中的两种稀土元素（REE）。由于其独特的性能，稀土元素在许多新技术（例如风力涡轮机，电池等）中的重要性日益提高。但是，稀土元素的生产需要大量的材料和能量消耗，并带来相当大的环境负担。由于欧洲工业对中国稀土元素出口的强烈依赖，本文基于在挪威Norra K？rr发现的矿物共生体电解质，提出了欧洲可能的稀土元素生产链。欧洲的产量与中国的路线相比，因为中国生产了如今超过85％的稀土。作为中国最大的稀土矿床的巴彦鄂博被认为是参考系统。使用生命周期评估方法，评估了两条生产线的环境影响。这项研究提出了一种新的估计数据，该数据可能是基于瑞典以eudialyte为基础的欧洲生产路线的。新的共沸物处理路线的结果表明，尽管共沸物中的REE总量远小于Bayan Obo矿床中的REE，但减轻了环境负担。尤其是，由于重稀土元素含量较高，因此，从常绿宝石中析出的的结果超出了an六O的结果。

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