Electrostatic sorting apparatus

Details Electrostatic sorting apparatus Electrostatic sorting apparatus

1981-05-27

1983-02-22

Hill, Ralph J.

Classifying, separating, and assorting solids

Electrostatic

209128, B03C 704, B03C 708

Patent

active

043747272

ABSTRACT:
An electrostatic sorting apparatus having a multistage sorting unit including a plurality of sorting conveyor belts on sorting plates aligned vertically within a cover housing. Each sorting conveyor belt or plate has a trough-like channel formed thereon for sorting a mixture of insulating particles and conductive particles. The particles of the mixture are subjected to repeated cycles of charging with a negative polarity, being attracted to a high voltage electrode, discharging, and dropping downwardly into sorting and recovering hoppers. Thus, the particles are vigorously elevationally moved between the sorting conveyor belt or plate and the electrode up and down and are finally collected in hoppers. The particles are accordingly uniformly agitated in the channel of the sorting conveyor belt or plate. Thus, the mixture is separated into the hopper with an enhanced quality of compost while fine foreign materials mixed therewith are removed from the compost.

REFERENCES:
patent: 288068 (1883-11-01), Kuhnmunch
patent: 2247596 (1941-07-01), Boel
patent: 2306105 (1942-12-01), Grave
patent: 4116822 (1978-09-01), Webb

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