DEVICE FOR ELECTROSTATIC CLASSIFICATION OF FINELY-DISPERSED MATERIALS Russian patent published in 2017 - IPC B03C7/12 

FIELD: electricity.

SUBSTANCE: device comprises a cylindrical housing with a wide inlet in its upper part connected to a vacuum lock, passing into an annular throat in the lower part, a high-voltage power source located inside a hollow cylinder - a charging electrode housing installed in the upper part on the classifier housing axis, a charging electrode spiraled on the surface of the hollow cylinder mounted on insulators, an inlet of a vacuum pump equipped with a filtre placed in the lower part of the classifier housing, a vacuum system placed outside the housing; a system of precipitating electrodes installed on the inner cylindrical surface of the classifier housing and made in the form of open truncated cones which inputs are taken by a net, with outer edges passing into launders connected by nozzles to the receiving containers having outputs with valves for connection to the vacuum locks. The housing of the device is vacuumized, and vacuum locks are used for the continuous supply and selection of classified materials.

EFFECT: efficiency of classification by size of finely-dispersed materials is increased.

1 dwg