RE: Article10 Aug 2025 10:00
Really does look like a golden unicorn
The key messages from this bulletin are as follows โ
The processes described herein are completely integrated. I.e. scrap applications into the factory and sintered NdFeB magnets out of the factory at different grades, with no miles on any of the intermediate processes.
The magnets produced herein contain over 95% recycled content with opportunities to adjust grades through blending with virgin or recycled feed, and / or grain boundary diffusion. Blending is commonly used in commercial magnet manufacturing, and blending systems have been incorporated into the commercial developments in the UK, Germany and USA.
The HPMS alloy powder has been upgraded to remove the oxygen rich grain boundary phase, allowing for higher grade magnets to be produced compared to many literature values for short loop recycled magnets.
The variability in magnetic properties observed for recycled sintered magnets produced from mixed batches of input feed shows the same variability as magnets produced from primary sources. For example, magnetic hysteresis loops for multiple recycled magnets produced from a mixed batch feed of VCM hard disk drive magnets is illustrated below, indicating minimal variability: