Trapped field enhancement of five-aligned superconducting bulk magnetized by pulse field for magnetic separation

Abstract Five-aligned superconducting bulk magnet system has been improved and the trapped field characteristics have been investigated by the pulse field magnetization (PFM). The trapped field B T ( z  = 0 mm) is enhanced to 2.7 T at the bulk surface because of the lowering temperature T s and the enhancement of the applied field B ex , compared with those for the proto-type system [Physica C 445–448 (2006) 399]. The operating fields, B T (2 mm) at the vacuum sheath surface and B T (9 mm) at the surface of the rotating membrane in water-treatment system, are also enhanced because of some structural improvement, and the multi-bulk magnet system available for the magnetic separation is realized.