Magnetic drum separator with an electromagnetic pickup magnet having a core in a tapered shape
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United States of America Patent
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Oct 22, 2013
Grant Date -
Jun 13, 2013
app pub date -
May 3, 2012
filing date -
Dec 9, 2011
priority date (Note) -
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Abstract
A magnetic drum separator, for separating ferrous and non-ferrous materials from a material stream. The magnetic drum separator comprising an outer shell that is rotatable around a central axis by a drive mechanism. The outer shell having a tubular length parallel to the central axis and a circular cross-section perpendicular to the central axis. An electromagnet pickup magnet positioned at a fixed location within the circular cross-section has a cross-section perpendicular to the central axis. The pickup magnet has a first end closest to the inner circumference of the outer shell and a second end located near the central axis. The pickup magnet comprises a core, with a backbar abutting it at the second end. The core comprises a plurality of blocks of different widths, in a cross-section perpendicular to the central axis, with the narrowest block at the first end and the widest block abutting the backbar.
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