This is How to Convey Coal Skillfully

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Conveyor Dynamics, Inc

Conveyor Dynamics, Inc.

Conveyor Belt Maintenance

Walkways substantially increase the weight of conveyor galleries. To eliminate this additional weight, CDI designed and provided detail drawings for a triangular maintenance trolley that allows maintenance personnel access to the conveyor.

How to Deal With Dust and Wind

Coal dust generation was a major concern at Dahej, particularly where the conveyor passes through Lakhigam village. Instead of enclosing the entire gallery with cladding, the belt trough-stringer-hood cover was designed to form a single aerodynamic section that shields the coal from wind. The design was validated using computational flow dynamics. Installing side cladding on the gallery would have made idler inspection from the trolley very difficult.

The low profile hood cover prevents personnel from viewing the top side of the belt. Alignment of the conveyor can be visualized from the underside of the belt. Heat detection systems are critical as it is not possible to see a fire on the belt outside of the transfer towers. To further reduce dust, a Dry Fog Dust Suppression (DFDS) system was installed at each conveyor discharge point to control dust generated in the chutes.

Erecting the Conveyor System

Since the conveyor system passes through both residential and industrial areas, minimizing the inconvenience and disruptions to the local community was an important consideration. PMC created a strategic plan for each and every gallery, mapping the approach through the village to ensure fast safe erection of the galleries.

The Indian Speciality

In India, acquiring land is challenging and conveyor systems often must allow local populations to freely pass through the conveyor corridor. Free movement is best facilitated by elevating the conveyor system, but this can become cost prohibitive. A triangular gallery with a motorized maintenance trolley is a practical structure for economically supporting elevated conveyors. In addition to the light weight structure, high speed conveying and horizontal curves offers further reduce capital investment costs.

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* All authors of Conveyor Dynamics

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