Black sand magnetic separator

  • US 9,358,550 B2
  • Filed: 06/30/2015
  • Issued: 06/07/2016
  • Est. Priority Date: 11/03/2014
  • Status: Active Grant
First Claim
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1. A magnetic separation device to separate non-magnetic particles from magnetic particles in a wet or dry mixture containing precious and valuable metal ores, said device comprising:

  • a non-magnetic cylindrical housing defining an inner longitudinal cylindrical channel, an outer surface, a closed end tool section and a handle section defining an opening to said inner longitudinal channel;

    a non-magnetic radial hilt applied along said outer surface upon said cylindrical housing;

    a handle section grommet having a central aperture, said handle section grommet inserting within said opening of said open handle section;

    a drive shaft defining a tool end, a cylindrical neck and a drill attaching end;

    a strong cylindrical bipolar magnet attaching to said tool end of said drive shaft, said bipolar magnet encased within a friction reducing, non-conductive slip sleeve, said slip sleeve slidably engaged within said inner longitudinal cylindrical channel, said drill attaching end extending through said central aperture beyond said handle section grommet with said cylindrical neck in sliding engagement within said central aperture, said drill attaching end further secured to a rotary drive apparatus delivering rotation to said drive shaft, said bipolar magnet upon said magnetic end rotating within said cylindrical housing and being movable between said tool section and said handle section as said drive shaft is extended or withdrawn within said longitudinal cylindrical channel, said rotating bipolar magnet producing a strong alternating and rotating magnetic field around said outer surface of said cylindrical housing, attracting and spinning said magnetic particles within said mixture of magnetic and non-magnetic particles upon said outer surface of said cylindrical housing, said spinning and rotation casting away said non-magnetic particles for collection as said magnetic particles remain bound to said outer surface of said tool section of said cylindrical shaft, said magnetic particles released from said tool end by withdrawal of said bipolar magnet from said tool end into said handle end.

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