Electromagnetic drum for cleaning ferromagnetic scrap of medium and large size
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United States of America Patent
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Oct 25, 2016
Grant Date -
Oct 15, 2015
app pub date -
Oct 31, 2013
filing date -
Nov 8, 2012
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Abstract
An electromagnetic drum for magnetic separator comprises a cylindrical structure (6) of ferromagnetic material provided with a plurality of solenoids (2a, 2b) wound on pole bodies (1a, 1b) having pole shoes (3a, 4a; 3b, 4b) arranged at the radially distal end thereof, said pole bodies (1a, 1b) and the solenoids (2a, 2b) wound thereon being all arranged on a same side of a longitudinal midplane of the drum, the solenoids (2a, 2b) having their axes substantially perpendicular to the longitudinal drum axis and each pole body (1a, 1b) extending mainly in a plane substantially perpendicular to said drum axis and substantially parallel to the planes of the other pole bodies (1a, 1b). Such a drum can provide a magnetic field suitable to draw even very large and heavy ferromagnetic scrap without having to face polarity changes along the circumferential path and while retaining cost and size similar to conventional drums.
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