| 摘要 |
In a dryer apparatus including an elongated rotatable drum having an input end and an output end, a burner for directing hot gases into the input end of the drum, and an aggregate feed mechanism for supplying aggregate particles into the drum adjacent the input end and for conveying the aggregate particles toward the output end, an assembly adapted to introduce reclaimed asphalt pavement particles into the dryer includes an inner drum for introducing reclaimed asphalt pavement particles into the elongated drum at a position adjacent the output end of the elongated drum and for moving the recycled asphalt pavement particles within the elongated drum in a direction counter to the direction of flow of the hot gases so that the hot gases heat the recycled asphalt pavement particles during travel of the recycled asphalt pavement particles within the inner drum assembly. The inner drum is mounted for rotation with the elongated drum and has an inlet end, an outlet end, and flighting for moving the recycled asphalt pavement along the inner drum from the inlet end toward the outlet end such that recycled asphalt pavement falls from the outlet end of the inner drum into the elongated drum and mixes with aggregate particles which are introduced into the drum adjacent the input end. The particles are heated by the hot gases moving in and around the inner drum as well as by conduction heating carried out via the flighting within the inner drum.
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