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HMA PLANTOPERATION
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Types Of Plants
BATCH DRUM MIXER
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NCAT 3
Basic Purpose Of HMA
PlantsTo produce a quality
hot asphalt mixture
that contains thedesired proportionsof asphalt andaggregate and meets
all specifications.
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Batch planttypical layout
StorageSilo
BatchTowerDryer
Conveyor BeltAggregateBins
Burner
Asphalt Storage
Hotelevator
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Drum Mixer Planttypical layout
StorageSilo
Dryer
Conveyor BeltsAggregateBins
Burner
Asphalt Storage
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NCAT 6
Common Plant Operations
Cold aggregate storage andfeeding
Dust control and collection
Mix storage
Weighing and handling
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NCAT 7
Common Plant Operations
Cold aggregate storage andfeeding
Dust control and collection
Mix storage
Weighing and handling
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NCAT 8
Aggregate Stockpile
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NCAT 9
Stockpiling Operations
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NCAT 10
Cold Feed
BINS
ConveyorBelts
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NCAT 11
Common Plant Operations
Cold aggregate storage andfeeding
Dust control and collection
Mix storage
Weighing and handling
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NCAT 12
Hma Mixing Plants CreateDust
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NCAT 13
Centrifugal Dust Collector
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NCAT 14
Baghouse Dust Collector
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NCAT 15
Collector Efficiency
74 micron
30 micron
10 micron
5 micron
1 micron
Cylone (80-90%)
Multicone (80-90%)
Wet collector (90-96%)
Baghouse
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NCAT 16
Common Plant Operations
Cold aggregate storage andfeeding
Dust control and collection
Mix storage
Weighing and handling
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NCAT 17
Storage StuctureTypical Layout
HOTMIX
PLANT
SurgeBin
Conveyor
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SURGESILO
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NCAT 19
Common Plant Operations
Cold aggregate storage andfeeding
Dust control and collection
Mix storage
Weighing and handling
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NCAT 20
Plants are computercontrolled
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TRUCK BEINGLOADED FROM
A DIRECTLYFROM A BATCH
PLANT
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Truck Being Loaded From ASurge Silo
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NCAT 23
TruckLoadingfrom aSurge
Bin
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BATCH PLANTtypical layout
StorageSilo
BatchTowerDryer
Conveyor BeltAggregateBins
Burner
Asphalt Storage
Hotelevator
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NCAT 25
Batch Plant
Batch Tower
Pug Mill
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NCAT 26
Burner - Batch Plant
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NCAT27
Schematic ofa batch plant
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NCAT28
Screen Deck
HOT BINS
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NCAT29
Pug Mill
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Drum Mixer Planttypical layout
StorageSilo
Dryer
Conveyor BeltsAggregateBins
Burner
Asphalt Storage
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Drum Dryer Mixer
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NCAT32
Temperature Profile in Drum
Mixer
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Dryer For Drum Dryer MixPlant
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Dryer For A Drum Mixer Plant
AggregateEntry Point
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NCAT35
Controls
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Small Drum Mixer Plant
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Sometimes Things Go Wrong
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NCAT38
Questions - ?