Download - HMA plant operation Power Point
HMA PLANT OPERATION
Types Of Plants
BATCH DRUM MIXER
NCAT 3
Basic Purpose Of HMA Plants
To produce a quality hot asphalt mixture that contains the desired proportions of asphalt and aggregate and meets all specifications.
Batch planttypical layout
Storage Silo
Batch TowerDryer
Conveyor BeltAggregate Bins
Burner
Asphalt Storage
Hot elevator
Drum Mixer Planttypical layout
Storage Silo
Dryer
Conveyor BeltsAggregate Bins
Burner
Asphalt Storage
NCAT 6
Common Plant Operations
• Cold aggregate storage and feeding
• Dust control and collection• Mix storage• Weighing and handling
NCAT 7
Common Plant Operations
• Cold aggregate storage and feeding
• Dust control and collection• Mix storage• Weighing and handling
NCAT 8
Aggregate Stockpile
NCAT 9
Stockpiling Operations
NCAT 10
Cold Feed BINS
Conveyor Belts
NCAT 11
Common Plant Operations
• Cold aggregate storage and feeding
• Dust control and collection• Mix storage• Weighing and handling
NCAT 12
Hma Mixing Plants Create Dust
NCAT 13
Centrifugal Dust Collector
NCAT 14
Baghouse Dust Collector
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
NCAT 16
Common Plant Operations
• Cold aggregate storage and feeding
• Dust control and collection• Mix storage• Weighing and handling
NCAT 17
Storage Stucture Typical Layout
HOT MIX
PLANTSurge
Bin
Conveyor
SURGE SILO
NCAT 19
Common Plant Operations
• Cold aggregate storage and feeding
• Dust control and collection• Mix storage• Weighing and handling
NCAT 20
Plants are computer controlled
TRUCK BEING LOADED FROM
A DIRECTLY FROM A BATCH
PLANT
Truck Being Loaded From A Surge Silo
NCAT 23
Truck Loading from a Surge Bin
BATCH PLANTtypical layout
Storage Silo
Batch TowerDryer
Conveyor BeltAggregate Bins
Burner
Asphalt Storage
Hot elevator
NCAT 25
Batch PlantBatch Tower
Pug Mill
NCAT 26
Burner - Batch Plant
NCAT 27
Schematic of a batch plant
NCAT 28
Screen Deck
HOT BINS
NCAT 29
Pug Mill
Drum Mixer Planttypical layout
Storage Silo
Dryer
Conveyor BeltsAggregate Bins
Burner
Asphalt Storage
Drum Dryer Mixer
NCAT 32
Temperature Profile in Drum Mixer
Dryer For Drum Dryer Mix Plant
Dryer For A Drum Mixer Plant
Aggregate Entry Point
NCAT 35
Controls
Small Drum Mixer Plant
Sometimes Things Go Wrong
NCAT 38
Questions - ?