Process for producing dysprosium-iron alloy and neodymium-dyspro

Details Process for producing dysprosium-iron alloy and neodymium-dyspro Process for producing dysprosium-iron alloy and neodymium-dyspro

1986-12-12

1988-04-12

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

C25C 336

Patent

active

047372486

ABSTRACT:
A process and an apparatus for producing a dysprosium-iron alloy or a neodymium-dysprosium-iron alloy by electrolytic reduction of dysprosium fluoride or neodymium fluoride and dysprosium fluoride in a bath of molten electrolyte, consisting essentially of 20-95% by weight of dysprosium fluoride or a mixture of neodymium fluoride and dysprosium fluoride, 5-80% by weight of lithium fluoride, up to 40% by weight or barium fluoride and up to 20% by weight of calcium fluoride, conducted between one or more iron cathode and one or more carbon anode. The apparatus comprises an electrowinning cell of refractory materials coated inside with a lining resistive to the bath, the carbon anode of constant transverse cross-sectional shape over its length, immersed in the electrolyte bath at its free end, the iron cathode of constant transverse cross-sectional shape over its length, immersed in the electrolyte bath at its free end, a receiver placed on the bottom of the cell for collecting the produced dysprosium-iron alloy or neodymium-dysposium-iron alloy in a liquid state on the tip of the iron cathode, siphoning means for withdrawing the molten alloy pooled in the receiver out of the cell, and feeding means for feeding the iron cathode into the electrolyte bath so as to apply the direct current to the iron cathode with a predetermined current density.

REFERENCES:
patent: 1196699 (1916-08-01), Keyes et al.
patent: 3524800 (1970-08-01), Morrice et al.
patent: 3586013 (1971-06-01), Stewart
patent: 3928935 (1975-12-01), Henrie et al.
"Fused Salt Electrowinning--of Rare Earths-" Morrie et al, Minerals Sci., vol. 11, #3, Jul. 1979, pp. 125-136.
"Direct Electrolysis of Rare-Earth Oxides to Metals and Alloys in Fluoride Melts", Bureau of Mines, Report of Investigations, 7146 (1968).

Affiliated with

Also associated with

Rating

Process for producing dysprosium-iron alloy and neodymium-dyspro does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing dysprosium-iron alloy and neodymium-dyspro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing dysprosium-iron alloy and neodymium-dyspro will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1427875