EIT RAW MATERIALS SUMMIT 2019

ABSTRACTS REVIEW

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The Future of Waste NdFeB Rare Earth Permanent Magnets and their Role in a Circular Economy
Author
Abstract Summary

Commercialized via the magnet-to-magnet (M2M®) route, magnet recycling and reuse is the only large-scale method to mitigate supply chain and material availability going forward. Implemented by UMC, the M2M® and grain boundary engineering (GBE®) processes have been scaled up, expanding technical limitations of traditional sintered manufacturing.

Miha

Zakotnik

Full Abstract

There is a global increase in demand for NdFeB magnets, and therefore for rare earths. This puts additional stress in their available supply chain, as we are also moving towards a more circular and greener economy.

Implemented by UMC, magnet-to-magnet (M2M®) recycling and grain boundary engineering (GBE®) processes have been scaled-up and expand technical limitations of traditional sintered neo manufacturing. These processes have measurable impact on the environment and address practicability when it comes to implementation in real life. Currently, UMC’s magnet reuse process is gaining attention and is regarded as an alternative production route for the manufacture of either fully dense sintered NdFeB magnets or bonded NdFeB magnets.

To manufacture recycled NdFeB magnets via the M2M® process, using end-of-life ('waste') NdFeB as a feedstock material, is challenging. By using a unique processing route, recycled magnets are up-cycled to new magnets with increased magnetic performance and microstructures. This was demonstrated when comparing two nearly identical electric motors, one containing recycled NdFeB magnets produced via the magnet-to-magnet processing, and the other containing conventional NdFeB magnets made from virgin elements. UMC has demonstrated the viability of the NdFeB magnet-to-magnet recycling and reusing technology in real world applications on a mass production scale.

Session

PS6 - Resource Efficiency Cities

Submitted on

Wed Feb 13 2019 16:32:34 GMT+0000 (Coordinated Universal Time)

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