CENTRIFUGAL GRAVITATIONAL SEPARATOR Russian patent published in 2002 - IPC

FIELD: mining and concentration. SUBSTANCE: invention relates to devices for separation of grainy mixtures into fractions according to specific gravity and it can be used at concentration of ores containing rare-earth and precious metals. Proposed separator has vertical separation chamber in form of coaxially installed tubes with spiral in form of rectangular-section tube arranged in ring clearance between coaxially installed tubes. Rectangular-section tube forms screw channel. Upper surface of rectangular-section spiral is perforated. Separator is provided also with flow deflectors in form of steps over entire length of separation chamber. EFFECT: improved efficiency of separation of materials. 3 cl, 3 dwg