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Apparatus And Method For Triboelectrostatic Separation, John M. Stencel, John L. Schaefer, Heng Ban, James K. Neathery
Apparatus And Method For Triboelectrostatic Separation, John M. Stencel, John L. Schaefer, Heng Ban, James K. Neathery
Center for Applied Energy Research Faculty Patents
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.