Rare Earth Permanent Magnet Recycling: A Critical Supply Chain Imperative
China controls roughly 90% of global rare earth processing and over 70% of NdFeB magnet production. Export restrictions imposed in April 2025 on dysprosium, terbium, and NdFeB materials have intensified the urgency for alternative supply sources. Recycling end-of-life magnets from hard disk drives, EV motors, wind turbines, and industrial equipment offers a viable secondary pathway.
Dominant Recycling Technologies
- Hydrogen Processing of Magnet Scrap (HPMS)
- Developed at the University of Birmingham, HPMS uses hydrogen gas to embrittle and demagnetize NdFeB alloy, enabling extraction without full disassembly. HyProMag commercializes this approach at Tyseley Energy Park, achieving an estimated 88% energy reduction versus primary mining.
- Magnet-to-Magnet (M2M™)
- Pioneered by Noveon Magnetics (formerly Urban Mining Company), this process reprocesses scrap magnets directly into new high-performance sintered magnets. Noveon reports 90% energy savings compared to the mine-to-magnet chain and has secured a 1,000-tonne supply contract with Nidec Motor Corp.
- Hydrometallurgical Separation
- Companies like Cyclic Materials and REEcycle dissolve magnet scrap in acid to selectively precipitate individual rare earth oxides. Cyclic Materials operates Hub100 in Kingston, Ontario and is expanding to a 500 t/yr Centre of Excellence.
- Electrochemical & Solvent Extraction
- IonicTech (Belfast) and Momentum Technologies (Dallas) employ ionic liquid or membrane-based extraction, reducing chemical waste while recovering high-purity oxides.
Market Scale and Trajectory
The global rare earth recycling market was valued at USD 549 million in 2024 and is projected to reach USD 1.01 billion by 2033 at a 7.0% CAGR. IDTechEx projects rare earth magnet recycling volumes to grow 6.5× by 2036, driven by EV motor retirements and wind turbine decommissioning.
Policy Drivers
| Region | Key Policy |
|---|---|
| United States | Defense Production Act Title III funding for REEcycle, Noveon; DoD contracts for domestic magnet supply |
| European Union | Critical Raw Materials Act mandating 25% recycled content for strategic materials by 2030 |
| United Kingdom | Minerals Security Partnership selection of HPMS technology; first UK magnet manufacturing in 20+ years |