ABSTRACT

Increasing demand for low carbon technologies and renewable energy sources requires our resources and economies to be circular. Many countries agree that the responsible consumption, production, and recycling of rare-earth-containing products is essential as a way to achieve the sustainable development goals also set out in the European Green Deal. Sustainable sourcing is targeted with carefully designed roadmap for cost efficient REE production from end-of-life products (EoLs) in addition to mining activities as providing primary sources. Hydrometallurgical methods, such as roasting, leaching, precipitation, crystallization, solvent extraction, and ion exchange includes fast developing, selective, eco-friendly, and cost-effective technologies especially for the extraction of REEs. This article provides an overview of primary and secondary resources and summarizes presents case scenario of studies carried out on the use of some promising methods, which could serve as an economical means for recovering REEs.

摘要

对低碳技术和可再生能源的需求不断增长，要求我们的资源和经济实现循环。许多国家一致认为，负责任地消费、生产和回收含稀土产品对于实现《欧洲绿色协议》中规定的可持续发展目标至关重要。可持续采购的目标是精心设计路线图，除了提供主要来源的采矿活动外，还可以利用报废产品 (EoL) 生产具有成本效益的稀土元素。湿法冶金方法，如焙烧、浸出、沉淀、结晶、溶剂萃取和离子交换，包括快速发展、选择性、环境友好和成本效益高的技术，特别是对于稀土元素的提取。