ELECTROSTATIC SEPARATION OF PLASTIC MATERIALS

摘要

An apparatus and associated method of separating mixed fragments of different plastic materials (2), in which the material (2) to be separated are capable of carrying different electrostatic charges. The charges are induced in the mixed fragments by a precharging hopper (3, 32) or by tumbling in drum (53). The charged fragments are then exposed to at least one electrostatic field in which they are separated by migration under the influence of the field. The field can be along an inclined sheet (4) or a free fall path. The separated material fragments are then collected.