Patent ID: 9073060
Filing Date: 2015-07-07
Classification: B03C,Y10T

Abstract:
1. A device for separating material in a high-gradient magnetic field, the device comprising: two permanent magnets, each of the permanent magnets having an upper side, a lower side, and a lateral side with the lateral sides of the permanent magnets joined together, the permanent magnets having directions of magnetic field polarity being opposite to one another, a magnetic anisotropy of the permanent magnets essentially exceeding the magnetic induction of a material of the permanent magnets, wherein the permanent magnets are mounted on a common base comprising a soft magnetic material that is connected to the lower sides of the permanent magnets, wherein, on the upper side of the permanent magnets, magnetic soft plates that are substantially thinner across a length thereof than each of the two permanent magnets are placed to form a narrow gap located immediately above upper edges of the joined lateral sides of the permanent magnets, wherein a thickness of the magnetic soft plates is 0.01-1.0 mm, and wherein, above the narrow gap, is a non-magnetic substrate for the material being separated.