1
Akira Asada: Method for recovering reusable rare earth compounds. Santoku Metal, Keil & Weinkauf, March 17, 1998: US05728355 (5 worldwide citation)

A method for recovering reusable rare earth compounds such as rare earth oxides, rare earth fluorides, or rare earth metals from rare earth alloy scrap in an effective and safe manner. The method includes the steps of: (a) pulverizing rare earth alloy scrap at least by hydrogenating the alloy scrap ...


2
Akira Asada: Recovering method for compound containing rare-earth elements can be reused. Santoku Metal, YANG LIQIN, August 13, 1997: CN96114419

The invention is a method for recovering reusable rare earth compounds such as rare earth oxides, rare earth fluorides, or rare earth metals from rare earth alloy scrap in an effective and safe manner. The method includes the steps of: (a) pulverizing rare earth alloy scrap at least by hydrogenating ...