Dense medium cyclones used for very accurate separation of particles of different density. Particles smaller than 0.5mm are removed from the mixture before it enters the cyclone. Magnetite is added to the water/particle mixture to allow precise control of density. The dense medium cyclone is mounted at a 15° angle. The lighter particles (coal) come out the upper end and the heavier particles (shale) the lower.
Derek Parnaby Cyclones International Ltd
Co Reg. 1124062 (England)
Registered Office
Chilton Industrial Estate
Chilton nr Ferryhill
County Durham
DL17 0SH (UK)
TEL +44 (0)1388 720849
FAX +44 (0)1388 721415
enquiries@parnaby.co.uk
In cyclones, the small particles are separated by centrifugal and vortex action (the cyclone itself does not move). The water/particle/magnetite mixture is pumped into the side of the cyclone tangentially (1) and swirls around creating a vortex in which the lighter particles are drawn out through the central vortex tube (2). The heavier particles are thrown by centrifugal force to the wall of the cyclone and are discharged at the opposite end (3).