US Patent Number
A triboelectrostatic separation apparatus includes a separator with an inlet, a separation chamber, first and second electrodes, a variable voltage source for applying respective positive and negative voltage potentials to the electrodes, a pair of separated particle outlets and a curtain gas flow generation system. The curtain gas flow generation system includes a source of curtain gas at positive pressure, a metering valve for matching curtain gas flow velocity to particle flow velocity and flow straighteners for eliminating eddy currents. A method for separating electrostatically charged particles is also described.
University of Kentucky Research Foundation, Lexington, Ky.
Stencel, John M.; Schaefer, John L.; Ban, Heng; and Neathery, James K., "Apparatus and Method for Triboelectrostatic Separation" (1999). Center for Applied Energy Research Faculty Patents. Paper 30.