A transport system for the transport of combustion waste, comprising:—a belt conveyor for transporting the waste, arranged at the bottom of a combustion chamber and apt to transport the waste onto a transport surface (311) movable along a longitudinal direction of advancement; and—side boards (81, 82) for containing the waste in a transport region (80), arranged above said transport surface, ratably connected to a casing of the conveyor and bearing wearable members (811, 812) apt to establish a sliding seal with lateral fins (312, 313) of the movable transport surface of the conveyor belt, so that the transported material be confined in the transport region defined by said movable transport surface and by said boards bearing the wearable members.
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