Patent ID: 7226537

Claim:
A method for the wet dynamic separation of a suspension in liquid phase, comprising microparticles comprising a magnetic material and a liquid medium in which said microparticles are in suspension, in which method: a) the suspension is confined in a chamber having a volume defined by at least a first dimension and a second dimention; b) at least one plurality of elementary magnetic fields is set up, these magnetic fields being distributed in a “Halbach semi-configuration”, whose respective ends facing the chamber generate a vector sum of said elementary magnetic fields, corresponding to a magnetic capture field passing through said chamber and exerting a magnetic attraction on the microparticles, and whose opposite respective ends generate no magnetic field, wherein a multiplicity of elementary magnetic fields is distributed in a plurality of rows along a third dimension wherein said third dimension is perpendicular to at least said first dimension or said second dimension of the chamber; and c) said capture magnetic field is generated, whereby a solid phase enriched with microparticles is captured in said chamber, and a liquid phase depleted in microparticles is extracted from said chamber.