Title :
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
fDate :
3/1/2001 12:00:00 AM
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
