About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Oxidation kinetics of hydrogenated NdFeB magnet |
| Author(s) |
Kwangsuk Park, Bosung Seo, Eunbin Cha |
| On-Site Speaker (Planned) |
Kwangsuk Park |
| Abstract Scope |
Hydrogenation on NdFeB magnets was proven to be an effective way in fabricating the magnet powder due to the brittle characteristic so it has been commonly used to recycle spent NdFeB magnets directly by forming the magnet powder. This process could also be applicable to hydrometallurgy method to recover rare earth elements (REEs) from the spent NdFeB magnets because it would induce higher oxidation rate and bigger Nd2O3 oxide during thermal oxidation. These aspects would be beneficial in achieving requirements for effective selective leaching in terms of high reaction rate.
In this study, we prepared hydrogenated powders with different sizes and then, thermally oxidized them with different temperatures to investigate oxidation kinetics on the hydrogenated NdFeB magnet powders during thermal oxidation. Also, the effect of powder size on the oxidation kinetic was discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Recycling and Secondary Recovery, Hydrometallurgy, Process Technology |