Development of Bi-2223 magnetic separation system

Author

Kumakura, H. ; Ohara, T. ; Kitaguchi, H. ; Togano, K. ; Wada, H. ; Mukai, H. ; Ohmatsu, K. ; Takei, H. ; Okada, H.

Author_Institution

Nat. Res. Inst. for Metals, Ibaraki, Japan

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

2519

Lastpage

2522

Abstract

A prototype of a cryocooler cooled Bi-2223 magnet system for magnetic separation was constructed. The magnet system has 200 mm room temperature bore and generates fields higher than 1T in 11-liter room temperature space. The magnet was tested at various temperatures and excitation speeds. The magnet was cyclically excited up to 1.7 T at the speed of 1.7 T/min with various periodic times. The temperature gradually increased with the number of excitations, however, the temperature saturated at 28-38 K for the periodic times longer than 9 min, and stable operation of the magnet was obtained. A demonstration of magnetic separation of aquatic slurry containing fine α-hematite paramagnetic particle was performed by using ferromagnetic stainless steel fibers as a magnetic filter. Almost 100% of hematite particles were successfully separated from the slurry

Keywords

bismuth compounds; calcium compounds; copper compounds; lead compounds; magnetic separation; strontium compounds; superconducting device testing; superconducting magnets; α-hematite paramagnetic particle; (BiPb)₂Sr₂Ca₂Cu₃O ₁₀; (BiPb)₂Sr₂Ca₂Cu₃O ₁₀ magnetic separation system; 1 T; 1.7 T; 200 mm; 28 to 38 K; aquatic slurry; cryocooler cooled Bi-2223 magnet system; ferromagnetic stainless steel fibers; hematite particles; magnetic filter; Magnetic fields; Magnetic separation; Metals industry; Paramagnetic materials; Prototypes; Saturation magnetization; Slurries; Superconducting magnets; Superconductivity; Temperature;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.920378

Filename

920378