Study on magnetic separation system using high Tc superconducting bulk magnets for water purification technique

Tetsuo Oka, H. Kanayama, K. Tanaka, S. Fukui, J. Ogawa, T. Sato, M. Yamaguchi, M. Ooizumi, K. Yokoyama, K. Noto

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The application of superconducting bulk magnets to the magnetic separation techniques has been investigated for the Mn-bearing waste water drained from the university laboratories. The research has been conducted in comparison with the electromagnets, and the cryo-cooled superconducting solenoid magnet. The separation ratios of ferrite precipitates including Mn element in the waste slurry were estimated by means of the high gradient magnetic separation method with ferromagnetic iron filters in the water channel and open gradient magnetic separation without them. As the magnetic force acting on the particles is given by the product of a magnetization of particles and a gradient of magnetic field, and a superconducting bulk magnet shows a sharp gradient of the magnetic field on the surface, the performances of the bulk magnet system were almost equivalent to those of the superconducting solenoid magnet with wide bore with respect to the magnetic separation ratios. The separation ratios for Mn have reached over 80 % for HGMS and 10 % for OGMS under the flow rates less than 3 liter/min.

Original languageEnglish
Article number012031
JournalJournal of Physics: Conference Series
Volume156
DOIs
Publication statusPublished - 2009 Jan 1
Externally publishedYes

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water treatment
magnets
gradients
solenoids
waste water
electromagnets
magnetic fields
ferrites
precipitates
flow velocity
filters
iron
magnetization
cavities
products
water

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Study on magnetic separation system using high Tc superconducting bulk magnets for water purification technique. / Oka, Tetsuo; Kanayama, H.; Tanaka, K.; Fukui, S.; Ogawa, J.; Sato, T.; Yamaguchi, M.; Ooizumi, M.; Yokoyama, K.; Noto, K.

In: Journal of Physics: Conference Series, Vol. 156, 012031, 01.01.2009.

Research output: Contribution to journalArticle

Oka, Tetsuo ; Kanayama, H. ; Tanaka, K. ; Fukui, S. ; Ogawa, J. ; Sato, T. ; Yamaguchi, M. ; Ooizumi, M. ; Yokoyama, K. ; Noto, K. / Study on magnetic separation system using high Tc superconducting bulk magnets for water purification technique. In: Journal of Physics: Conference Series. 2009 ; Vol. 156.
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