Dry bulk handling

Dry bulk handling

When material is allowed to free fall uncontrolled, it accelerates, and as the velocity increases dust particles within the material separate and are ejected by the fast moving air-stream created.

Ship loading represents a major challenge since the material must be delivered to the vessel’s hold from a boom conveyor, often at heights of 20 metres or more above the hold floor, generating high material velocity and extreme dust hazard.

The company Cleveland Cascades Ltd has the solution that overcomes this problem by directing the material flow down a series of inclined cones, which limits the flow velocity to a controlled speed. The shape of the cone holds the dry bulk in such a way that prevents particulate separation and minimises material degradation. The significantly reduced product velocity creates a “mass flow”. A stream of material moving as a single mass through the chute and onto a stockpile with minimised segregation.

A Gebuwin manual winch with two compartments on the drum is used for lowering what they call the shroud (green sleeve in the photos). In normal operation the shroud would be up enclosing the cones. But for maintenance work the shroud can be released and then wound back up with a Gebuwin worm gear manual winch.

 

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