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Gradient interface magnetic composites and systems therefor

  • US 6,001,248 A
  • Filed: 06/07/1995
  • Issued: 12/14/1999
  • Est. Priority Date: 08/25/1994
  • Status: Expired due to Term
First Claim
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1. A separator for separating a first type of particle, comprising a transition metal particle having a first magnetic susceptibility, from a second type of particle having a second magnetic susceptibility, comprising:

  • a first material having a first magnetism;

    a second material having a second magnetism, wherein said first and second materials are arranged to form a microstructured magnetic composite material;

    said microstructured magnetic composite material comprising a plurality of boundaries between the first and second materials that are adapted to provide paths through the microstructured magnetic composite material, each of said plurality of boundaries having a magnetic gradient within said plurality of paths, wherein, when said microstructured magnetic material is placed in a region containing the first and second types of particles, the magnetic gradients cause at least some of the first type of particles to be separated from said region while inhibiting the separation of a majority of the second type of particles from said region.

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