Metallothermic reduction or rare earth metals

Details Metallothermic reduction or rare earth metals Metallothermic reduction or rare earth metals

1989-06-09

1991-02-12

Sheehan, John P.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75597, 75610, 420405, 420416, C22B 2622, C22B 5900

Patent

active

049920960

ABSTRACT:
In a metallothermic process for reducing rare earth metal salts to produce pure rare earth metals and metal alloys, e.g. neodymium or neodymium/iron alloy for use in manufacturing neodymium/boron/iron permanent magnets, including adding pure metallic iron, such as iron flake, to a mixture of metal salt, such as neodymium chloride, and a reducing metal source, such as calcium/magnesium alloy, heating in a crucible in a preheated high temperature furnace with stirring to a temperature of 900 degrees C. under a flow of argon, separating the metal from the salt formed, and purifying the metal via distillation.

REFERENCES:
patent: 4636353 (1987-01-01), Seon et al.

Affiliated with

Also associated with

Rating

Metallothermic reduction or rare earth metals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metallothermic reduction or rare earth metals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metallothermic reduction or rare earth metals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-18296