Centrifugal separators
Sinonine think that centrifugal separator is an important
gravity equipment in beneficiation plant. Heavy medium cyclone is a
centrifugal separator similar to the conventional hydrocyclone in principle of
operation. It provides a high centrifugal force and a low viscosity of the
medium. Much finer separations are achieved in Heavy medium cyclone than in gravity
separators. The ore or coal is suspended in a very fine medium of ferrosilicon or
magnetite, and is fed tangentially to the Heavy medium cyclone under pressure.
The
sink product leaves the cyclone at the apex and the float product is discharged
through the vortex finder. These cyclones are commonly installed with axes at
10–15° to the horizontal, thereby enabling the unit to be fed at comparatively
low inlet pressure, preferably from a steady head tank. Heavy medium cyclones are
widely used for beneficiation of coal in the size range of 13–0.5 mm in coal
washeries.
By giving a special shape to the cone, and to the
cylindrical part of the cyclone, it is possible to affect separation without
using heavy medium. Such a cyclone is known as water-only cyclone or water
washing cyclone. Vorsyl separator, LARCODEMS, Dyna Whirlpool and Tri-Flo
separator are some other centrifugal separators.
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