Resources Contact Us Home
Process control for recycled asphalt pavement drum plant

Image Number 19 for United States Patent #5322367.

A process for the production of hot mix asphalt (HMA) by the treatment of virgin material alone or adding reclaimed or recycled asphalt pavement (RAP) (up to 100% of the HMA). The HMA is first heated in either a parallel or a counter flow rotating drum which is supplied with hot combustion gases generated by a remote low NO.sub.x burner. The process is controlled by a micro-processor which controls RAP temperature, mixture gradation, emissions and production rate as a function of measured drum conditions such as temperature at the drum inlet, drum speed, drum slope, drum RPM, output hydrocarbons, drum gas outlet temperature, and amount of aggregate added.

  Recently Added Patents
Audio signal clip detection
Apparatus and method to simulate a power trip to a disk drive
RFID device using single antenna for multiple resonant frequency ranges
Multilevel directory assistance apparatus and method
Rapid glycopeptide optimization via neoglycosylation
Predicting popularity of electronic publications
Differentiated PSIP table update interval technology
  Randomly Featured Patents
Heat resisting steel
Automatic magnetic tape cartridge separator for tape drive systems
Apparatus for enlarging or reducing an image pattern
Clock face
Apparatus and process for ballistic aerosol marking
Fluid control system for steerable agricultural implement
Universal mounting system
Decelerating fluid actuator for snowplows and other heavy machinery
Erbium-doped fiber amplifier with automatic gain control
Hybrid drive train with torsional vibration damper