Patent ID: 6681938
Filing Date: 2004-01-27
Classification: B03C,C04B,Y02W

Abstract:
A process for removing organic and inorganic particles, based on their electric charge and size, from a dry mixture comprising:a) sizing the mixture into a plurality of particle fractions; b) isolating the fractions from each other; c) transporting the particles through a venturi feed system; d) contacting the particles to a plurality of charge inducing substrates selected from the group consisting of copper, polytetra-fluoroethylene, Nylon, and aluminum, to create charged and uncharged particles; e) subjecting the particles to an electric field comprising a first set of positively charged plates arranged colinearly with each other and wherein each of the plates of the first set are spaced from each other to define a plurality of channels, and a second set of negatively charged places arranged colinearly with each other, wherein each of the plates of the second set are spaced from each other to define a plurality of channels, and wherein the second set is juxtaposed to the first set to define a passage between the first set and the second set; and f) collecting the separated particles.