Patent ID: 6329623
Filing Date: 2001-12-11
Classification: B03C

Abstract:
An apparatus for electrostatically separating a feed mixture of two types of particles comprising two rectangular charged electrodes positioned on opposite sides of a free-fall space for attracting oppositely electrically charged particles therefrom, each said electrode including a frame having a front plate, and a back plate joined to each other by two vertical end panels to at least partially enclose a thin box-shaped space with an open bottom, said front plate of each electrode being a perforated panel for passing feed particles therethrough, one said electrode being charged by an electrical charge opposite to that of another said electrode, and each said front plate and back plate of each said electrode being charged with the same electrical charge thereby creating zero electrostatic field gradient inside each space of each said electrode to permit feed particles inside each said electrode to freely fall by gravity through said open bottom of each said electrode.