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Left: Asphalt Plant, Brisbane.
This is a large capacity asphalt plant
operated by Brisbane City Council.
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Right: Aggregate Storage Bins,
Brisbane Plant.
The production of asphalt begins with the
metered discharge of various sized
aggregates and sands from storage bins,
onto a conveyor belt.
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Left: Rotating Drier and Vertical
Conveyor, Toowoomba Plant.
The aggregate and sand mix is passed
through a rotating drier where all
moisture is removed and the particles
heated. The mix is then lifted by a
vertical conveyor.
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| Right: Batching Plant, Toowoomba.
The mix falls through a series of inclined
vibrating screens and the various size
fractions are stored in hot storage bins.
The plant operator then weighs out the
correct proportions of each size for a
single batch. The sizes are mixed and then
the required amount of hot bitumen
is added and mixing continued. The batch
is then discharged from the mixer into a
waiting truck, and the batching process
repeated.
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Left: Hot Storage Bins, Brisbane Plant.
In the Brisbane plant, the batches of
hot mix are stored in insulated storage
bins, and this means that arriving trucks
can be filled more rapidly.
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