High gradient magnetic separation using superconducting bulk magnets

K. Yokoyama, T. Oka, H. Okada, K. Noto

Research output: Contribution to journalConference articlepeer-review

32 Citations (Scopus)


We aim to apply the superconducting bulk magnets to high gradient magnetic separation technique. Two bulk magnets are face-to-face arranged and a pipe stuffed magnetic filters composed of ferromagnetic wires is placed between the magnetic poles. We setup the magnetic separation system and test it using slurry mixed with hematite particles (Fe2O3). Y123 bulk superconductors are magnetized by the "IMRA" method (pulsed-field magnetization), and consequently a magnetic field of 1.59 T is generated at the center of 20 mm gap between the magnetic poles. As a result of experiment on the magnetic separation, hematite particles of over 90% were removed from slurry at the flow rate of 2 l/min.

Original languageEnglish
Pages (from-to)739-744
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue numberPART 1
Publication statusPublished - 2003 Oct 1
Externally publishedYes
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: 2002 Nov 112002 Nov 13


  • High gradient magnetic field
  • Magnetic separation
  • Magnetization
  • Superconducting bulk magnet

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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