| 摘要 |
PCT No. PCT/GB93/01995 Sec. 371 Date Jun. 9, 1995 Sec. 102(e) Date Jun. 9, 1995 PCT Filed Sep. 23, 1993 PCT Pub. No. WO94/07688 PCT Pub. Date Apr. 14, 1994A compaction apparatus (2) has a screw conveyor (4) for conveying waste material through a passage (6) and compacting it therein. An exit nozzle (10) is arranged to communicate with the passage (6). The nozzle (10) defines a duct which enlarges and contracts response to increasing and decreasing material pressure, respectively.
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