HMA PLANT OPERATION Types Of Plants BATCH DRUM MIXER 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 NCAT Batch plant typical layout Asphalt Storage Conveyor Belt Aggregate Bins Dryer Burner Hot elevator Batch Tower Storage Silo Drum Mixer Plant typical layout Asphalt Storage Aggregate Bins Conveyor Belts Dryer Burner Storage Silo Common Plant Operations • Cold aggregate storage and feeding • Dust control and collection • Mix storage • Weighing and handling NCAT Common Plant Operations • Cold aggregate storage and feeding • Dust control and collection • Mix storage • Weighing and handling NCAT Aggregate Stockpile NCAT Stockpiling Operations NCAT Cold Feed BINS Conveyor Belts NCAT 10 BATCH PLANT typical layout Asphalt Storage Conveyor Belt Aggregate Bins Dryer Burner Hot elevator Batch Tower Storage Silo Batch Plant Batch Tower Pug Mill NCAT 25 Burner - Batch Plant NCAT 26 Schematic of a batch plant NCAT 27 Screen Deck HOT BINS NCAT 28 Pug Mill NCAT 29 Drum Mixer Plant typical layout Asphalt Storage Aggregate Bins Conveyor Belts Dryer Burner Storage Silo Drum Dryer Mixer Temperature Profile in Drum Mixer NCAT 32 Dryer For Drum Dryer Mix Plant Dryer For A Drum Mixer Plant Aggregate Entry Point Controls NCAT 35 Small Drum Mixer Plant Sometimes Things Go Wrong Questions - ? NCAT 38 [...]...Common Plant Operations • Cold aggregate storage and feeding • Dust control and collection • Mix storage • Weighing and handling NCAT 11 Hma Mixing Plants Create Dust NCAT 12 Centrifugal Dust Collector NCAT 13 Baghouse Dust Collector NCAT 14 Collector Efficiency 74 micron 30 micron Cylone (80-90%) Multicone (80-90%) 10 micron 5 micron 1 micron Wet collector (90-96%) Baghouse NCAT 15 Common Plant Operations... Typical Layout Conveyor HOT MIX PLANT Surge Bin NCAT 17 SURGE SILO Common Plant Operations • Cold aggregate storage and feeding • Dust control and collection • Mix storage • Weighing and handling NCAT 19 Plants are computer controlled NCAT 20 TRUCK BEING LOADED FROM A DIRECTLY FROM A BATCH PLANT Truck Being Loaded From A Surge Silo Truck Loading from a Surge Bin NCAT 23 BATCH PLANT typical layout Asphalt... Storage Silo Batch Plant Batch Tower Pug Mill NCAT 25 Burner - Batch Plant NCAT 26 Schematic of a batch plant NCAT 27 Screen Deck HOT BINS NCAT 28 Pug Mill NCAT 29 Drum Mixer Plant typical layout Asphalt Storage Aggregate Bins Conveyor Belts Dryer Burner Storage Silo Drum Dryer Mixer Temperature Profile in Drum Mixer NCAT 32 Dryer For Drum Dryer Mix Plant Dryer For A Drum Mixer Plant Aggregate Entry... Dryer Burner Storage Silo Drum Dryer Mixer Temperature Profile in Drum Mixer NCAT 32 Dryer For Drum Dryer Mix Plant Dryer For A Drum Mixer Plant Aggregate Entry Point Controls NCAT 35 Small Drum Mixer Plant