Continuous Nd production via chloride-based molten salt electrolysis

composite of four images: Top left: Ladle apparatus for Nd collection. Top right: As deposited Nd “marble” Bottom: SEM image with EDS showing >99 wt.% purity
Top left: Ladle apparatus for Nd collection. Top right: As deposited Nd “marble” Bottom: SEM image with EDS showing >99 wt.% purity

CMI researchers from Lawrence Livermore National Laboratory and Case Western Reserve University conducted the activity for this highlight

Innovation
Chloride-based molten salt electrolysis for electrowinning of high purity liquid Nd. 

Achievement

  • Consistent production of gram level quantities of high purity Nd (~99.5 wt. %).
  • Stable anodes are not consumed, enabling continuous operation. 
  • Galvanix Inc. (SBC in OH) is commercializing the process.

Significance and Impact
Greener, lower-cost approach than existing MSE approaches for Nd, enabling a domestic supply chain for NdFeB magnets. Continuous operation allows for both improved throughput and reduced post processing. 

Hub Goal Addressed
Energy-efficient rare earth metals production.