Material separation by dielectrophoresis

Details Material separation by dielectrophoresis Material separation by dielectrophoresis

1980-11-24

1981-12-15

Prescott, Arthur C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204186, 204300R, 204302, 55 2, 55113, 55116, B03C 500

Patent

active

043057977

ABSTRACT:
An apparatus and method are provided for separating electrically neutral solid materials having different dielectric, shape, density or dipole moment properties by passing a mixture of such materials through a nonuniform electric field generated between an electrically charged arcuate surface and a flat horizontal grounded surface having a receiving end, a discharge end and two lateral edges, said arcuate surface being spaced above said horizontal surface and extending from about said receiving end to about said discharge end and from one of said lateral edges to at least midway between said lateral edges; a means for introducing said solid materials into the electric field near said receiving end and conducting said material through the field to said discharge end; and recovering one type of material from said lateral edge adjacent said arcuate surface and another type of material from said discharge end of the horizontal surface.

REFERENCES:
patent: 3893898 (1975-07-01), Candor
patent: 4033841 (1977-07-01), Candor
patent: 4100068 (1978-07-01), Jordan et al.
patent: 4101400 (1978-07-01), Pepping
patent: 4208807 (1980-06-01), Candor

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