Process for the preparation of mother alloys of iron and neodymi

Details Process for the preparation of mother alloys of iron and neodymi Process for the preparation of mother alloys of iron and neodymi

1988-04-04

1989-05-09

Valentine, Donald R.

Chemistry: electrical and wave energy

Processes and products

204212, 204243R, 204245, 204247, 204272, 204284, 204292, 204294, C25C 336, C25C 300, C25B 1112

Patent

active

048286583

ABSTRACT:
The invention concerns a process for the electrolytic preparation of a mother alloy of iron and neodymium by the reduction of a mixture comprising at least one reactive oxygen-bearing compound of neodymium in a bath of molten halides with at least one metallic cathode, preferably of iron, and a carbon anode. In accordance with the invention, the bath is primarily formed by a mixture of molten fluorides whose decomposition potential is close to that of NdF.sub.3 or more negative, such as for example NdF.sub.3, MgF.sub.2, ScF.sub.3, CeF.sub.3, LaF.sub.3, BaF.sub.2, CaF.sub.2 and SrF.sub.2, and permitting solubilization of the oxides by a complexing effect, the solute to be reduced is formed by a mixture of salts primarily containing a reactive oxygen-bearing compound of neodymium which is very rapidly soluble in the molten electrolyte. The working temperature is in a range of from 640.degree. to 1030.degree. C., the anodic current density is from 0.1 to 1.5 A/cm.sup.2, and the cathodic current density is between 2 and 30 A/cm.sup.2.

REFERENCES:
patent: 3383294 (1968-05-01), Wood
patent: 3524800 (1970-08-01), Morrice, Jr. et al.
patent: 3729397 (1973-04-01), Goldsmith et al.
patent: 4235692 (1980-11-01), Townsend
patent: 4684448 (1987-08-01), Itoh et al.
patent: 4747924 (1988-05-01), Itoh et al.

Affiliated with

Also associated with

Rating

Process for the preparation of mother alloys of iron and neodymi 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 the preparation of mother alloys of iron and neodymi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of mother alloys of iron and neodymi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-87715