Boom stacker

Stackers with fixed or movable booms (which can be raised and lowered) are used for covered as well as for outdoor blending beds. For reasons of cost it is not a good idea to install permanently mounted belt conveyer systems over outdoor stockpiles. A drawback associated with fixed-boom stackers is that dust nuisance may arise, and the attachment of telescopic discharge spouts or similar devices to... 

Fig.14 Boom stacker with fixed boom (longitudinal stockpile) 78...

Fig. 23 Boom stacker with fixed boom and telescopic belt...

Fig. 25 Boom stacker with movable (luffing and slewing) boom...

A drawback of the windrow stacking technique is that it requires several throw-off positions, necessitating expensive slewing boom stackers. 

Type (a) has the disadvantage that the material falls from a great height, just as it does from a belt conveyor mounted under the ridge of the roof of a building. With a boom stacker of type (b) the height of fall can be keptdown to a minimum. Finally, type (c) is a universal machine, which is more particularly suitable where two... 

Fig. 26 Boom stacker with luffing boom and telescopic belt conveyor for a circular stockpile...

Either a slewing stacker or a stacker with two booms is needed. 

Alternatively, stacker belt conveyors mounted on booms which can be raised and lowered may be used for stockpiling the clinker. In such installations the boom movements are automatically controlled by means of sensors responding to the height of the pile. A storage system of this kind is shown in Fig. 15. 

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