ELECTROSTATIC SEPARATOR Russian patent published in 2020 - IPC B03C7/02 

FIELD: technological processes.

SUBSTANCE: invention relates to separation of fine granular materials by means of electrostatic separation and can be used both for dressing of minerals in mining industry, and in other fields. Proposed device comprises loading hopper secured at said case accommodating grounding depositing drum equipped with drive to rotate said drum about horizontal axis and brush to clean drum from settled particles of nonconducting fraction. In housing there are two high-voltage electrodes, corona and receiving electrodes. Receiving electrode is placed by means of a holder on an arc-shaped guide fixed on the body. Housing is equipped with vibration feeder with vibration drive. Unloading end of vibration feeder is located above depositing drum. Receivers of conducting and non-conducting fractions and industrial product are placed in the lower part of the housing. Loading hopper is equipped with heating elements to maintain temperature of the supplied product, as well as a gate with a unit for regulating the size of the outlet hole from the bin. Above the vibrating feeder in the form of vibratory stripe there is a unit of infrared radiation lamps, which additionally heat the product on the vibratory stripe. Corona-forming electrode is located by means of the holder on the arc-shaped guide, and in front of it at the output of the vibratory stripe there is a protective casing, which prevents charging of the product with ions created by the corona-forming electrode. Inside precipitation drum there is an electric heater. Brush for cleaning drum from non-conductive fraction is equipped with drive, which is connected with drive of depositing drum. Receivers of conducting and non-conducting fractions and industrial product are equipped with dividers of swept-out shape, which are made with possibility of rotation around their axis.

EFFECT: higher efficiency of separation of fine material into conducting and non-conductive fractions.

1 cl, 1 dwg