Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Electrolytic production of neodymium metal from a molten chloride electrolyte
Filetype[PDF-1.02 MB]

  • Description:
    "The U.S. Bureau of Mines conducted experiments on electrowinning of neodymium metal by using a molten-metal cathode at 650 deg. C and an electrolyte of 50 mol pct ndcl3 (neodymium chloride) and 50 mol pct kcl (potassium chloride). The molten-metal cathodes were alloys of magnesium and zinc or magnesium and cadmium. Current efficiencies were 90 pct with a mg-zn cathode and 80 pct with a mg-cd cathode. The mg-cd cathode was easily separated from the electrolyte. In contrast, the mg-zn cathode tended to mix with the electrolyte, making separation difficult. The cathode metals were separated from the neodymium by distillation at 1,100 deg. C under a vacuum of 10-3 torr. Neodymium metal of 99.9 + Purity was recovered from the mg-cd alloy cathode after 30 min distillation time. The neodymium recovered from the mg-zn system contained almost 2 pct zn after vacuum distillation. Continuous operation using the mg-cd alloy cathode was demonstrated." - NIOSHTIC-2 NIOSHTIC no. 10011011
  • Document Type:
  • Main Document Checksum:
  • File Type:
  • Supporting Files:
    No Additional Files
No Related Documents.

You May Also Like: