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Method and apparatus for separating material

United States Patent

7,124,968
October 24, 2006
View the Complete Patent at the US Patent & Trademark Office
An apparatus for sorting particles composed of a mixture of particles with differing physical and chemical characteristics. The apparatus includes a comminutor, a mechanism for removing particles from the inside of the comminutor which are intermediate in size between the feed to the comminutor and the product of comminution, a mechanism for either discharging particles taken from the comminutor to a reject stream or providing them to a size classification apparatus such as screening, a mechanism for returning the oversize particles to the comminutor or for discharging them to the reject stream, an electric mechanism for separating particles with an electrical force disposed adjacent to a magnet mechanism, a mechanism for providing the particles to the magnet mechanism and the electric mechanism and for providing triboelectric and capacitive charges to the particles, and a mechanism for returning one of the products of electric and magnetic separation to the comminutor while discharging the other to the reject stream. A method for sorting particles composed of a mixture of particles with differing physical and chemical characteristics.
Oder; Robin R. (Export, PA), Jamison; Russell E. (Lower Burrell, PA)
EXPORTech Company, Inc. (New Kensington, PA)
10/ 988,367
20050145732
November 12, 2004
This invention was made with Government support under Grant DE-FG05-94ER81764 awarded by the Department of Energy. The Government has certain rights in this invention.