|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Rare Metal Extraction & Processing
||Recovery of Rare Earth Elements from Recycled Hard Disk Drive Mixed Steel and Magnet Scrap
||Tedd Lister, Michelle Meagher, Mark Strauss, Luis Diaz Aldana, Harry Rollins
|On-Site Speaker (Planned)
Recycling e-scrap is an important source of critical materials. Traditional recycling routes for e-scrap focus on the recovery of silver and gold. However, value can be attained by recovering of rare earth elements. This paper describes a process for the recovery of rare earth elements from hard disk drives using HCl as a re-usable extraction medium. The mixture was selectively leached using HCl to remove the magnet alloy from shredded hard disk drives. The magnet and steel dissolution rate were examined for various HCl concentrations. Recovery of rare earth hydroxides was over 80%. Finally, reused HCl recovered up to 70% rare earth elements.
||Electrometallurgy, Extraction and Processing, Recycling and Secondary Recovery