Mobile Conveying Equipment for sale

One way to reduce the explosion of haulage costs is to use conveyor belts. The special need of a quarry operation, with a high frequency of relocating the mobile crusher, requires a mobile and flexible conveying system combined with a fixed conveying system. The mobile conveyors are assigned to haul the crushed material to the fixed system and equalize elongation between those two systems. These tracked mobile conveyors work over shorter distances than stationary ones, because they have to work as a flexible link between the track-mounted mobile crusher and the field conveying system.

The combination of mobile and fixed conveying can save up to 2/3 of the existing haulage costs. The use of dump trucks is in fact often very inefficient. Some of the largest dump trucks use over 50 percent of the energy to move themselves in spite of hauling blasted material. To make this clearer, a dump truck is empty for half of the operational cy cle. A conveyor is also empty half of the time, but it is not hard to guess which one consumes more energy. In addition to this, the haulage distance limits the transport ratio of a dump truck. The fur ther you need to transport the material, the less ef ficient it is to use a dump truck.

Contrary to the reduction of the haulage capacity of dump trucks, the transport distance does not affect the capacity of conveyor belts. The capacity of conveyor belts is limited by the belt drive speed, belt width and form. As shown belt drives are much more economical than dump trucks and they are not limited by haulage distance. In opencast mines lengths of more than 30 km are not uncommon. The belt width of mobile conveyors varies up to 1600 mm and a maximum particle size of 1/3 of the belt width is suggested. Depending on the feed material and the mobile crushing unit haulage of 2000 Mg/h can be performed.

The transfer from the mobile crusher to the mobile conveyor belt is done with a direct linked system. The mobile conveying system is able to discharge onto the stationary field conveyor by a discharge hopper on rails or on a skid. The hopper is mostly equipped with a conical adapter for easier positioning and a vibrating feeder to protect the belt. The radial wheel set of the mobile belt, always mounted between two belts, is steered hydraulically by a remote device. The maximum number of mobile conveyor belts, which are directly linked to a mobile crushing unit and which can be controlled by a single operator is three. Moreover there are conveying solutions with self propelled-, track mounted transfer conveyors, stackers and truck loading hoppers available for each special demand.