|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Rare Metal Extraction & Processing
||Extraction of Rare Earth Metals: The New Thermodynamic Considerations towards Process Hydrometallurgy
||Ajay Bhagwan Patil, Rudolf P.W.J. Struis, Andrea Testino, Christian Ludwig
|On-Site Speaker (Planned)
||Ajay Bhagwan Patil
Successful management of secondary waste resources is essential for the viable circular economy. E-waste could serve as the potential urban mining source for the alternative supply chain of critical metals such as rare earth elements (REEs). The hydrometallurgical processes for REEs are mainly designed for mining. Conventional approaches lack the sustainability, and economic and value chain based aspects important in the current era with increasing pressure to reduce environmental impact. We have performed the thermodynamic calculations to simulate the solution chemistry behaviour of REEs such as Neodymium (Nd), Dysprosium (Dy) and Praseodymium (Pr) present in NdFeB magnets. Our calculations have suggested that we could exploit the differences in solution properties of REE hydroxides by precisely controlling the hydrometallurgical methods and then to separate the REEs further using extractive processes.