Electrolytic process for producing neodymium metal or neodymium

Details Electrolytic process for producing neodymium metal or neodymium Electrolytic process for producing neodymium metal or neodymium

1989-06-09

1992-06-02

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204 71, C25C 300

Patent

active

051183960

ABSTRACT:
A process based on molten salt electrolysis for producing pure rare earth metals is disclosed. This process is the direct electrolytic deposition of a rare earth metal such as neodymium, from a molten salt cell containing a mixture of electrolytes and a salt of neodymium, onto a liquid magnesium cathode forming an intermediate alloy. The intermediate alloy is distilled to isolate the neodymium metal. Also disclosed is a process for producing a pure neodymium/iron alloy wherein pure iron is added to the intermediate neodymium/magnesium alloy during the distillation step.

REFERENCES:
patent: 2961387 (1960-11-01), Slatin
patent: 3729397 (1970-09-01), Goldsmith et al.
patent: 4002502 (1977-01-01), Bainbridge et al.
patent: 4828658 (1989-05-01), Bertaud
patent: 4853094 (1989-08-01), Horders et al.
Morrice et al., Fused-Salt Electrowinning and Electrorefining of Rare-Earth and Yttrium Metals, Minerals Science Engineering, vol. 11, No. 3, Jul. 1979.

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