Mechanical design of a superconducting demonstrator for magnetic density separation

J. J. Kosse*, W. A.J. Wessel, C. Zhou, M. Dhallé, G. Tomás, H. J.G. Krooshoop, H. J.M.Ter Brake, H. H.J.Ten Kate

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)
91 Downloads (Pure)


The focus of this paper is on the mechanical design of a NbTi-based demonstrator magnet for magnetic density separation (MDS) that is being constructed at the University of Twente. MDS is a new recycling technology that allows the separation of non-magnetic particles based on their mass density, using a vertical magnetic field gradient and a ferrofluid. The unique mechanical design challenge for this type of magnet is the desired minimization of the distance between a sim1 m2 planar array of cryogenic racetrack coils and the ambient-temperature ferrofluid bath. The optimization of the magnet geometry results in a distance between the coils and ferrofluid of 50 mm. This is made possible by opting for conduction-cooling, for the inclusion of room-temperature rods that pass through the cold mass to support the cryostat, and for the geometry of the cassette that reacts to the Lorentz force.

Original languageEnglish
Article number115019
JournalSuperconductor science and technology
Issue number11
Publication statusPublished - Nov 2021


  • ferrofluid
  • magnet
  • magnetic density separation
  • mechanical
  • racetrack
  • superconductor
  • vertical magnetic field gradient
  • UT-Hybrid-D


Dive into the research topics of 'Mechanical design of a superconducting demonstrator for magnetic density separation'. Together they form a unique fingerprint.

Cite this