AGGREGATE DRYER FOR ASPHALT PLANT

摘要

Disclosed is a dryer-heater for drying and heating aggregate material prior to its mixing with other ingredients in the production of asphalt paving materials. Drying of the aggregate is accomplished as it moves vertically through an open bin, heat being provided by sinuous passes of tubes carrying hot combustion gases from fuel burners to exhaust stacks; the combustion gases are kept separate from the aggregate so that no dust or fines are discharge from the stack and the sinuous combustion gas tubes are placed so as to efficiently utilize the heat from the burners to dry and elevate the temperature of the aggregate.