Intensified extraction and recovery of critical minerals from ore tailings

从尾矿中强化提取和回收关键矿物

• 批准号: 555565-2020
• 负责人: Boffito, DariaCamilla
• 金额: $ 2.19万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=720260
• 关键词: Intensified; extraction; recovery; critical; minerals

Global trends demand the energy-intensive rare earth elements (REE) and metals extraction/separation to be more sustainable. The extraction of REE is mainly based on traditional solvent extraction methods, which are not very selective and generate wastewater while being capital intensive. Intensified extraction, in particular solvent extraction (SX) assisted by ultrasound or microwave, as well as intensified separation technologies such as microwave-assisted ion exchange (MIX) and molecular recognition technology (MRT), are all greener methods that require less organic solvents and acids, and generate less waste. They have the potential to be more selective in separating metals than traditional techniques and generally lead to smaller equipment for the same productivity. This research project is realized in collaboration with Impact Global Solutions (IGS) and Auxico Resources Canada Inc. and addresses the recovery of residues from the mining industry, namely iron-rich residues from REE extractions and asbestos residues, which we will accomplish with the green extraction and separation methods mentioned above. The target metals are Fe, Co, V, Cr, Ni, Ti. The environmental benefits of the implementation of these intensified technologies include less wastewater and carbon emissions due to the lower energy required. Canada will benefit from the realization of this project since clean technologies bring social benefits, as improving the quality of the environment translates into improving people's life quality. Canada will also take advantage of the knowledge generated in the framework of this project by implementing clean technologies on its territory that can be applied to a variety of fields, including the mineral industry, materials engineering, food industry, biomass and forestry, and the polymer industry. This project will train 1 PhD, 2 MSc, and 6 BSc students.

全球趋势需要能源密集型稀土元素（REE），而金属提取/分离则更可持续。 REE的提取主要基于传统的溶剂提取方法，这些方法不是很有选择性，并且在资本密集型的​​同时产生废水。超声或微波炉辅助的溶剂提取（SX）以及加强的分离技术，例如微波炉辅助离子交换（MIX）和分子识别技术（MRT），都是所有需要较少的有机溶剂和酸，以及产生较少的废物，都需要加强提取的提取（SX），以及加强的分离技术。与传统技术相比，它们有可能在分离金属方面更具选择性，并且通常会导致相同生产力的设备较小。该研究项目是通过与Impact Global Solutions（IGS）和Auxico Resources Canada Inc.合作实现的，并解决了从采矿行业中的残留物回收，即REE提取物和石棉残留物中富铁的残留物，我们将通过上面提到的绿色提取方法和分离方法来实现。目标金属是Fe，Co，v，cr，ni，ti。实施这些加强技术的环境益处包括由于所需的能量较低而导致的废水和碳排放量较小。加拿大将从实现该项目的实现中受益，因为清洁技术带来了社会利益，因为改善环境的质量可以改善人们的生活质量。加拿大还将通过在其领土上实施清洁技术来利用该项目框架中产生的知识，这些技术可应用于各种领域，包括矿物工业，材料工程，食品工业，生物量和林业以及聚合物行业。该项目将培训1位博士学位，2个MSC和6名BSC学生。