EP 0548498 A1 19930630 - Process for electrolysis of molten salts containing neodymium compounds.
Title (en)
Process for electrolysis of molten salts containing neodymium compounds.
Title (de)
Verfahren zur Elektrolyse von Neodymverbindungen enthaltenden Schmelzen.
Title (fr)
Procédé d'électrolyse de composés de néodyme en milieu fondu.
Publication
Application
Priority
DE 4142160 A 19911220
Abstract (en)
[origin: US5346608A] Neodymium and neodymium-iron alloys are obtained by electrolysis of a neodymium salt melt using magnetite as the anode material. The cathode is non-consumable or is made of iron to be consumed and form a neodymium-iron alloy. The electrolysis is preferably carried out under a protective atmosphere.
Abstract (de)
Bei der Herstellung von Neodym und Neodym-Eisen-Vorlegierungen für Dauermagnet-Werkstoffe durch Elektrolyse von Neodymoxid enthaltenden Fluorid-Schmelzen werden Verunreinigungen vermieden, wenn anstelle sich verbrauchender Anoden aus Kohlenstoff Magnetit-Anoden verwendet werden. Die Elektrolyse erfolgt vorzugsweise unter Schutzgas.
IPC 1-7
IPC 8 full level
C25C 3/34 (2006.01)
CPC (source: EP US)
C25C 3/34 (2013.01 - EP US)
Citation (search report)
- [A] EP 0289434 A1 19881102 - PECHINEY ALUMINIUM [FR]
- [A] WO 9001078 A1 19900208 - MASSACHUSETTS INST TECHNOLOGY [US]
- [A] Section Ch, Week 8833, 11. Juli 1988 Derwent Publications Ltd., London, GB; Class M28, AN 88-232370 & JP-A-63 166 987 (ASAHI CHEMICAL IND. KK)
Designated contracting state (EPC)
AT DE FR
DOCDB simple family (publication)
US 5346608 A 19940913; AT E127539 T1 19950915; AU 3028892 A 19930624; AU 654419 B2 19941103; DE 4142160 C1 19930311; DE 59203579 D1 19951012; EP 0548498 A1 19930630; EP 0548498 B1 19950906; JP 2577172 B2 19970129; JP H0688279 A 19940329
DOCDB simple family (application)
US 99269192 A 19921218; AT 92118082 T 19921022; AU 3028892 A 19921218; DE 4142160 A 19911220; DE 59203579 T 19921022; EP 92118082 A 19921022; JP 33859192 A 19921218