| 摘要 |
<p>An asphalt recycling system (11) and process are incorporated into an existing batch type asphalt plant (10). The existing asphalt plant (10) has an aggregate dryer (15) and air discharge ducts (26) connected to a filtering system (27). A recycling dryer (34) has input ducts (32) connected to the existing aggregate dryer discharge ducts (26) and output ducts (35) connected from the recycling dryer back to the existing ducts (33) to the filtering system (27). A recycle feeder bin (37) for feeding reclaimed asphalt pavement to the recycle dryer (34) is connected to the recycle dryer. A recycle booster burner (43) is operatively connected to the recycle dryer (34) through the input duct (32) to the dryer for providing additional heat to the recycle dryer (34) so that the waste heat from the existing aggregate dryer (15) and the booster burner (43) provide a predetermined heat to the recycle dryer (34) for heating the asphalt material. A recycling storage bin or silo (53) is connected to receive the heated recycled asphalt from the recycle dryer (34). A hammermill (36) or other means may be provided for breaking up the old asphaltic materials, such as old paving materials prior to entry of the material into the recycle dryer (34). Dampers are provided for directing heated gases from the existing batch type asphalt plant to the recycling system, as needed, and temperature controls (47, 51, 46, 50) are utilized to control the recycle booster burner (43) to provide the right combination of exisiting waste and added heat for the recycle dryer (34). The stored recycled asphalt materials may be fed to an exisiting plant batching tower (12) for batching and loading into vehicles.</p> |
