Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Verfahren zur Wiedergewinnung von Neodym oder Neodymoxid aus einem Ausgangsgemisch

METHOD FOR RECLAIMING NEODYMIUM OXIDE FROM A STARTING MIXTURE
 
: Tegel, Marcus

:
Frontpage ()

DE 102012017418 A1: 20120830
Deutsch
Patent, Elektronische Publikation
Fraunhofer IFAM, Institutsteil Pulvermetallurgie und Verbundwerkstoffe Dresden ()

Abstract
The invention relates to a method for reclaiming Nd2O3 from starting mixtures/scrap containing NdFeB. The aim of the invention is to specify possibilities for effectively reclaiming neodymium oxide in order to recover a high proportion from unsorted waste/scrap at reduced cost. In the method according to the invention, a hydrometallurgical breakdown process is performed, in which acid is added, while the volumetric flow rate of hydrogen released during the hydrometallurgical breakdown process or the entire released hydrogen volume is simultaneously determined. The volumetric flow rate of hydrogen released or the entire hydrogen volume is used as a controlled variable for the amount of added acid and/or to determine the end of the hydrometallurgical breakdown process.

: http://publica.fraunhofer.de/dokumente/N-311018.html