Drum for magnetic separator and relevant production method
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United States of America Patent
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Jun 28, 2016
Grant Date -
Nov 26, 2015
app pub date -
Oct 29, 2013
filing date -
Nov 8, 2012
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Abstract
In a drum for magnetic separator comprising a cylinder (C) of ferromagnetic material on the outside of which there are formed a plurality of longitudinal grooves (6) housing permanent magnets (7) arranged in longitudinal rows along a magnetic arc of 130°-160° with alternate N-S polarity, the cylinder (C) being located within a shell (M) of nonmagnetic material, the length (D) of the single dipole of the magnetic circuit is comprised in a range between 100 and 150 mm so as to provide a substantially homogeneous magnetic field along the whole magnetic arc, thanks to the limited length (D) of the dipole which results in a sinusoidal pattern of very limited amplitude and therefore with nominal values of the magnetic field that are present over almost 100% of the magnetic arc.
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