| 摘要 |
<p>A rotary drier for plants for the production of bituminous macadams with the use of recycled materials comprises a hollow rotary cylinder (2), heating means (9) connected to one end (4) of the cylinder (2), an aggregates infeed section (7) connected to one end (3), (4) of the cylinder (2), and a dried material outfeed section (8) connected to the other end (3), (4), an insertion section (24) for inserting recycled material into the cylinder (2), the insertion section being connected to an intermediate portion of the cylinder (2). The inside of the cylinder (2) is axially divided into a first, convection heat exchange zone (12), equipped with material tipping blades (14), and into a second, radiation and conduction heat exchange zone, and the cut material insertion section (24) is positioned inside the first heat exchange zone (12). A first group (25) of tipping blades (14) is mounted circumferentially inside the cylinder (2) between the insertion section (24) and the second heat exchange zone (13).</p> |
