Belt conveyors are used for conveying materials on a continuous basis. The materials usually handled are coal, mineral ores and stone. They are commonly installed near cement plants, thermal power stations, ports for handling bulk cargo and stone crushers. The components of the system are :
(a) belts which are continuous
(b) idlers, which are rollers on which the belt moves
Figure gives a sketch of the system.
Figure : Belt and Idlers in a Conveyor Belt System