Electrostatic separation of particles

Details Electrostatic separation of particles Electrostatic separation of particles

1998-06-12

2000-05-16

Walsh, Donald P.

Classifying, separating, and assorting solids

Electrostatic

Attracting and repelling

2091271, 2091274, 209129, B03C 700

Patent

active

060640227

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.

REFERENCES:
patent: 2782923 (1957-02-01), Cook, Jr. et al.
patent: 2786575 (1957-03-01), Roberts
patent: 5251762 (1993-10-01), Taylor et al.
patent: 5494171 (1996-02-01), Kazamoto et al.
patent: 5687852 (1997-11-01), Raschka et al.
patent: 5938041 (1999-08-01), Stencel et al.
patent: 5967331 (1999-10-01), Katyshev et al.

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