AN ELECTROSTATIC METHOD OF SEPARATING PARTICULATE MATERIALS

摘要

A method of separating particulate materials (5) of different properties has been developed. It consists of feeding a mixture of dry, powdered materials (5) to one end of the surface of a planar electrode (2), which is vibrating (7) to move the particles forward. At least one type (8) of the particulate materials (5) acquires a charge via conduction or triboelectrification. Those particles (8) that acquire charges of the same sign as that of the planar electrode (2) are lifted and collected at the V-shaped counter electrodes (3) installed above. The new separation method is particularly useful for removing unburned carbons from fly ash and any other conducting materials from nonconducting ones.