| 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 of the cylinder (2), a dried material outfeed section (8) connected to the other end and an insertion section (24) for inserting recycled cut material into the cylinder (2), the insertion section being connected to an intermediate portion of the cylinder (2). The insertion section (24) comprises a plurality of radial openings (31 ) distributed circumferentially on the cylinder (2) inner surface (18) and covered by a covering structure (33) which also comprises a plurality of separator plates (34) circumferentially distributed along the cylinder (2) inner surface (18) so that between each pair of adjacent separator plates (34) there is at least one radial opening (31 ), the separator plates forming a plurality of first channels (35) for guided insertion of the cut material into the cylinder (2). There are also means (32) for feeding the cut material to the openings (31 ), said means being located on the outside of the cylinder (2). The covering structure (33) is fastened to the cylinder (2) inner surface upstream of the openings (31 ), extending in the material feed direction and is distanced from the cylinder (2) inner surface (18) downstream of the openings (31 ) for putting the openings (31 ) in communication with the inside of the cylinder (2).</p> |
