Skip to Content
Find More Like This
Return to Search

Recovering rare earth metals from magnet scrap

United States Patent Application

20170016088
A1
View the Complete Application at the US Patent & Trademark Office
A method is provided for treating a rare earth metal-bearing scrap material by melting an extractant selected from the group consisting of bismuth (Bi) and lead (Pb) and contacting the melted extractant and the scrap material at a temperature and time to recover at least one of the light rare earth metal content and the heavy rare earth metal content as a metallic extractant alloy, which can be subjected to vacuum distillation or sublimation to recover the rare earth metal(s). The method can be practiced to recover the light rare earth metal content and the heavy rare earth metal content concurrently in a one-step process or separately and sequentially in a two-step process.
Ott, Ryan T. (Ames, IA), McCallum, Ralph W. (Santa Fe, NM)
14/ 999,802
June 28, 2016
CONTRACTUAL ORIGIN OF THE INVENTION [0002] This invention was made with government support under Grant No. DE-AC02-07CH11358 awarded by the U.S. Department of Energy. The government has certain rights in the invention.