Electrostatic separators triboelectric

R. Kohnlechner, Triboelectric charging and electrostatic separation of diverse, non-conductive mixed waste, especially plastic, employs enclosed vibro-conveyor followed by in-flight separation influenced by non-linear electrostatic field, DE Patent 19 901 743, assigned to Hamos GmbH Recycling und Separ, July 20, 2000. 

FIG. 19-57 Triboelectric separators. V-Stat electrostatic separator for silica removal from industrial minerals. Courtesy ofCarpco, Inc.)... 

FIG. 19-58 Triboelectric separators. Belt-type electrostatic separator for separation of carbon from fly ash. Courtesy of Separation Technolo es, Inc.)... 

Hamos GmbH of Penzberg, Germany, has developed triboelectric separation systems for plastic/plastic separations, and electrostatic separators for plastic/metal separation. ... 

The electrostatic separation is presently arising great expectations. By exploiting the characteristics of the triboelectrical charge, two mixed pol5aners obtain opposite charges. The particles, which are allowed to fall in electromagnetic... 

Electrostatic-type separation is being tested as an alternative to the presently used process of flotation of pebble phosphates for coarser-size fractions. Advantages sought include reduced reagent costs, a lower water requirement, and fewer tailings-disposal problems when a part of the flotation circuit is eliminated. The largest application of triboelectric separation is in the salt industry where sodium and potassium salts are separated after preconditioning. 

ELECTROSTATICS Plastic Separation technologies that use electrostatic charging of the particle surface are in commercial use [87, 88]. Methods based on triboelectric... 

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