PURIFYING QUARTZ RAW MATERIAL BY ELECTROSTATIC SEPARATION.

In this paper results are given of laboratory studies and experimental tests of an electrostatic separation method for purifying quartz raw material from mineral impurities. For this, single-section drum electric separators in which an electrostatic field was created between a grounded rotating drum and a system of deflecting electrodes (8 pieces) were used. A negative voltage was placed on the electrodes through a divider in the range fom 5 to 30 kV. The material was charged before it was fed into the electrostatic field by rubbing cold or heated particles of quartz and minerals against the surface of the vibration trough.