Conveyor Dynamics, Inc. >> INNOVATIONS

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Invented by Conveyor Dynamics, Inc (CDI) in 1992, to run a high strength conveyor belt up the Palabora curved haul road from the pit bottom along a 250m turning radius. Although this earliest concept did not proceed, the Power Strip was later installed in 2001 at an ESKOM property in South Africa, by Technical Services International (RSA) to haul coal fired boiler ash.

Principle: Fabric or low strength cord belt holds ore stream and rest on narrow high strength power strip, show in the red riding carry side center troughing idler. The power strip engages the trough carry side belt along it's full length except at load point. Bulk material is carried by the troughed belt but require little tension. Power Strip is the main tensile member. Intermediate drives can be applied to maintain a lower tension rating without transfer stations.

Benefits:

Reduces capital and operating costs by >20%
Reduces power consumption by 20%-30% by minimizing belt cover thickness and maximizing low rolling resistance viscoelastic indentation efficiency
Eliminates transfer stations
Belts can be extended for greater lengths without increasing strength
Belts can lift greater loads on inclines without increasing strength
Transfer station maintence and wear repair minimized
Smaller horizontal curves (<300m) can be negotiated allowing for more complex terrain geometries
Power strips rubber and steel cord tension member components are optimized to minimize rolling resistance (belt tension and power). Worn replacement belts are less expensive.
Improves belt tracking in straight and curve zones
Allows for greater loading due to better tracking - Eliminates DIN/ISO/CEMA extra belt width for tracking error; about 6% of width.

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