Method of decalcifying rare earth metals formed by the reduction

Details Method of decalcifying rare earth metals formed by the reduction Method of decalcifying rare earth metals formed by the reduction

1990-08-09

1991-10-15

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

B22F 100

Patent

active

050571486

ABSTRACT:
Mixtures of a rare earth and an intermetallic compound comprising the rare earth and a ferromagnetic metal selected from the group consisting of iron and cobalt which are formed by the reduction-diffusion process are decalcified by reacting the product of the reduction-diffusion reaction with neodecanoic acid and dissolving the calcium neodecanoate formed thereby in an organic solvent to remove it from the metallic components of the reaction product.

REFERENCES:
patent: 3625779 (1971-12-01), Cech
patent: 3748193 (1973-07-01), Cech
patent: 3912554 (1975-10-01), Arendt et al.
patent: 4917724 (1990-04-01), Sharma
U.S. patent application Ser. No. 07/256,011 filed 10/11/88 (abandoned).

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