Device for high gradient magnetic separation

Details Device for high gradient magnetic separation Device for high gradient magnetic separation

1980-07-18

1985-07-09

Spear, Jr., Frank A.

Liquid purification or separation

Magnetic

B01D 3506

Patent

active

045280967

ABSTRACT:
A device for high gradient magnetic separation contains, between two pole pieces, an ordered filter structure with parts of magnetic material, which are arranged perpendicular to the direction of a magnetic field and the flow direction of a medium to be filtered, the filter structure comprising flat ribbons with a thickness of less than 100 .mu.m of a material with a coercitive field strength H.sub.c less than 0.2 Oe, which are arranged so that their axes and the normals of their flat sides are approximately perpendicular to the direction of the magnetic field, requiring only a very small field strength for magnetizing the filter structure in order to obtain high flux density gradients.

REFERENCES:
patent: 2959287 (1960-11-01), Daus et al.
patent: 3126924 (1964-03-01), Kirkpatrick
patent: 3136720 (1964-06-01), Baermann
patent: 3567026 (1971-03-01), Kolm
patent: 3581898 (1971-06-01), Tyrrell
patent: 4116829 (1978-09-01), Clark
"Physics Today", May 1975, John J. Gilman, pp. 46-53.
"IEEE Transactions on Magnetics," vol. MAG-12, No. 6, Nov. 1976, L. I. Mendelsohn et al., pp. 924-926.

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