Features 

The unique design of Cavex® Dewatering hydrocyclone is achieved by the use of the underflow regulator which automatically compensates for inevitable variation in feed solids concentration and addresses five key areas in wet cyclone operation.

1:  It delivers the same underflow density, regardless of uncontrolled variation in solids content in the feed.
2:  The design easily and readily handles unexpected tramp oversize in the feed, without plugging.
3:  The Cavex® Dewatering hydrocyclone produces a very high underflow density (essentially water and slime free) without being operated in ‘roping’ condition.
4:  The unique design of the hydrocyclone  allows adjustment to vary the underflow density as desire, without expensive mechanical or hydraulic adjustable spigot arrangements.
5:  The Cavex® Dewatering Hydrocyclone also requires much lower spigot maintenance than conventional cyclones.

How a dewatering hydrocyclone works

When fed with water only, the extended overflow pipe creates a siphon that in turn, creates a negative pressure at the bottom of the hydrocyclone. As a result of this the rubber discharge regulator is drawn closed, preventing leakage of water.

 When solids are introduced, they are classified to that underflow and when a sufficient “pressure” of solids builds up, the discharge regulator opens. The updraught removes excess water, resulting in an underflow density substantially higher than would be achieved by a normal cyclone.

 The air bleed assembly can be used to control the intensity of the siphon effect and hence the underflow density. Another major benefit of the hydrocyclone is that the discharge regulator permits the use of an oversized spigot. This in turn entails that the hydrocyclone can cope easily with surges in feed tonnage and with tramp oversize material.