| 摘要 |
A hot-mix asphalt manufacturing system for recycled asphalt coated aggregate (RAP) has a rotary dryer and burner operable to heat the dryer to create a maximum gas temperature at a location between first and second ends of the dryer. A first inlet is upstream and a second inlet is downstream of the maximum temperature. A first coarse aggregate is introduced through the first inlet, fine RAP is introduced through the second inlet, and the aggregates are heated and mixed forming a mixture outputted at an outlet. For 100% RAP processes, the first and second aggregates can consist of RAP. For less than 100% RAP processes, virgin aggregate can be introduced through the first inlet, located adjacent the first end of the rotary dryer, and a third inlet can be located between the maximum temperature and the first inlet, with fine and coarse RAP introduced through the second and third inlets. |
