High gradient magnetic separation for weakly magnetized fine particles [for geothermal water treatment]

Author

Okada, Hidehiko ; Tada, Tomohiro ; Chiba, Akihiko ; Mitsuhashi, Kazunari ; Ohara, Takeshi ; Wada, Hitoshi

Author_Institution

Iwate Ind. Promotion Center, Adv. Sci. & Technol. Inst. of Iwate, Morioka, Japan

Volume

12

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

967

Lastpage

970

Abstract

We measured the removal efficiency of hematite (Fe₂O₃) and iron (III) hydroxide (Fe(OH)₃) fine particles suspended in water in a high gradient magnetic separation (HGMS) system. Fe₂O₃ and Fe(OH)₃ have relatively small magnetic relative susceptibilities (MKS) near 10^-3 and average particle diameters near 1 μm. We demonstrated that HGMS is able to effectively separate weakly magnetized particles.

Keywords

geothermal power; magnetic particles; magnetic separation; superconducting magnets; suspensions; water treatment; Fe(OH)₃; Fe₂O₃; arsenic removal; flow velocity effect; geothermal water; high gradient magnetic separation; higher efficiency purification; ion-exchange resin; membrane filter; removal efficiency; superconducting magnet; weakly magnetized fine particles; Biomembranes; Geothermal power generation; Iron; Magnetic field measurement; Magnetic materials; Magnetic separation; Magnetization; Superconducting filters; Superconducting magnets; Water heating;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.1018561

Filename

1018561