![]() ![]() Luffing of the boom minimises dust by reducing the distance that material such as coal needs to fall to the top of the stockpile. A stacker can usually move in at least two directions: horizontally along the rail and vertically by luffing (raising and lowering) its boom. They normally travel on a rail between stockpiles in the stockyard. ![]() Stackers are nominally rated for capacity in tonnes per hour (tph). It carried over-size material to the tailings pile. ![]() Gold dredges in Alaska had a stacker that was a fixed part of the dredge. A reclaimer can be used to recover the material. Its function is to pile bulk material such as limestone, ores, coal and cereals on to a stockpile. Krupp coal stacker featuring tripper conveyor and non-slewing, luffing boom at RTCA Kestrel Mine Stacker at Garzweiler surface mineĪ stacker is a large machine used in bulk material handling.
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