A Method for Recovery of Nd2Fe14B Grains from Bulk Sintered Nd-Fe-B Magnets and / or Magnet Scraps by Electrochemical Etching | Project and Innovation Support
15/01/2021

A Method for Recovery of Nd2Fe14B Grains from Bulk Sintered Nd-Fe-B Magnets and / or Magnet Scraps by Electrochemical Etching

Publication Number: EP3660174A1
Application Date: 27. 11. 2018
Assignee/Applicant: Jožef Stefan Institute [SI]
Inventor: Xuan Xu, Sašo Šturm, Kristina Žužek Rožman
Title: A Method for Recovery of Nd2Fe14B Grains from Bulk Sintered Nd-Fe-B Magnets and / or Magnet Scraps by Electrochemical Etching
Description: The invention relates to a method for recovery of Nd2Fe14B grains from bulk sintered Nd-Fe-B magnets and / or magnet scraps. In this method the Nd-Fe-B magnets (1) and / or magnet scraps are anodically oxidized using a non-aqueous liquid electrolyte (5), said anodic oxidation releasing the Nd2Fe14B grains (6) in said Nd-Fe-B magnets (1) and/or magnet scraps. The released Nd2Fe14B grains (6) are collected during and/or after said anodic oxidation. The proposed method allows a more environ- mental friendly and cost-effective way for recycling EOL Nd-Fe-B magnets/ Nd-Fe-B magnet scraps.
Drawings:
Category: Nanotechnology and New Materials
Technology application codes: Industrial manufacturing, material and transport, Other industrial technologies, Physical and exact sciences,
Market application codes: Industrial products, Other
www: https://worldwide.espacenet.com/patent/search/family/064500217/publication/EP3660174A1?q=EP3660174A1
Patent offices: EPO

 

Extended patent application


Publication Number: CN111223657A
Application Date: 17. 11. 2019
Assignee/Applicant: Jožef Stefan Institute [SI]
Inventor: Sašo Šturm, Xuan Xu, Kristina Žužek Rožman
Title: A Method for Recovery of Nd2Fe14B Grains from Bulk Sintered Nd-Fe-B Magnets And / Or Magnet Scraps by Electrochemical Etching
www: https://worldwide.espacenet.com/patent/search/family/064500217/publication/CN111223657A?q=EP3660174A1

 

Extended patent application


Publication Number: JP2020084331A
Application Date: 4. 6. 2020
Assignee/Applicant: Jožef Stefan Institute [SI]
Inventor: Sašo Šturm, Xuan Xu, Kristina Žužek Rožman
Title: A Method for Recovery of Nd2Fe14B Grains from Bulk Sintered Nd-Fe-B Magnets And / Or Magnet Scraps by Electrochemical Etching
www: https://worldwide.espacenet.com/patent/search/family/064500217/publication/CN111223657A?q=EP3660174A1

 

Extended patent application


Publication Number: US2020168395A1
Application Date: 19. 11. 2019
Assignee/Applicant: Jožef Stefan Institute [SI]
Inventor: Sašo Šturm, Xuan Xu, Kristina Žužek Rožman
Title: Method for Recovery of Nd2Fe14B Grains from Bulk Sintered Nd-Fe-B Magnets And / Or Magnet Scraps by Electrochemical Etching
www: https://worldwide.espacenet.com/patent/search/family/064500217/publication/US2020168395A1?q=EP3660174A1