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HMA PLANT OPERATION Slide 2 Types Of Plants BATCHDRUM MIXER Slide 3 Batch plant typical layout Storage Silo Batch Tower Dryer Conveyor Belt Aggregate Bins Burner Asphalt Storage Hot elevator Slide 4 Drum Mixer Plant typical layout Storage Silo Dryer Conveyor Belts Aggregate Bins Burner Asphalt Storage Slide 5 NCAT 5 Common Plant Operations Cold aggregate storage and feeding Dust control and collection Mix storage Weighing and handling Slide 6 NCAT 6 Common Plant Operations Cold aggregate storage and feeding Dust control and collection Mix storage Weighing and handling Slide 7 NCAT 7 Aggregate Stockpile Slide 8 NCAT 8 Stockpiling Operations Slide 9 NCAT 9 Cold Feed BINS Conveyor Belts Slide 10 NCAT 10 Common Plant Operations Cold aggregate storage and feeding Dust control and collection Mix storage Weighing and handling Slide 11 NCAT 11 Hma Mixing Plants Create Dust!! Slide 12 NCAT 12 Centrifugal Dust Collector Slide 13 NCAT 13 Baghouse Dust Collector Slide 14 NCAT 14 Collector Efficiency 74 micron 30 micron 10 micron 5 micron 1 micron Cylone (80-90%) Multicone (80-90%) Wet collector (90-96%) Baghouse Slide 15 NCAT 15 Common Plant Operations Cold aggregate storage and feeding Dust control and collection Mix storage Weighing and handling Slide 16 NCAT 16 Storage Structure Typical Layout HOT MIX PLANT Surge Bin Conveyor Slide 17 SURGE SILO Slide 18 NCAT 18 Common Plant Operations Cold aggregate storage and feeding Dust control and collection Mix storage Weighing and handling Slide 19 NCAT 19 Plants are computer controlled Slide 20 TRUCK BEING LOADED FROM A DIRECTLY FROM A BATCH PLANT Slide 21 Truck Being Loaded From A Surge Silo Slide 22 NCAT 22 Truck Loading from a Surge Bin Slide 23 BATCH PLANT typical layout Storage Silo Batch Tower Dryer Conveyor Belt Aggregate Bins Burner Asphalt Storage Hot elevator Slide 24 NCAT 24 Batch Plant Batch Tower Pug Mill Slide 25 NCAT 25 Burner - Batch Plant Slide 26 NCAT 26 Schematic of a batch plant Slide 27 NCAT 27 Screen Deck HOT BINS Slide 28 NCAT 28 Pug Mill Slide 29 Drum Mixer Plant typical layout Storage Silo Dryer Conveyor Belts Aggregate Bins Burner Asphalt Storage Slide 30 Drum Dryer Mixer Slide 31 NCAT 31 Temperature Profile in Drum Mixer Slide 32 Dryer For Drum Dryer Mix Plant Slide 33 Dryer For A Drum Mixer Plant Aggregate Entry Point Slide 34 NCAT 34 Controls Slide 35 Small Drum Mixer Plant