Electrostatic separation of particles
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United States of America Patent
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May 16, 2000
Grant Date -
N/A
app pub date -
Jun 12, 1998
filing date -
Jun 12, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus and a process for subjecting a free falling stream of particles to an electrostatic field, between two rows of oppositely charged electrostatic rotating electrodes to effect a separation between particles of different electrostatic properties; the electrodes and cleaning brushes being suspended vertically and driven from their upper ends and having free lower ends. The electrode bearings are gently flushed with air from inside the electrodes and brushes to minimize the accumulation of dust thereon. The feed stream is baffled to minimize any lateral movement of the feed particles. The electrodes are fitted with commutator mechanisms to permit efficient and unchanging electrical charging of the electrodes without a separate connection from the power source to each electrode, i.e., the charging is from one to the next adjacent electrode.
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