| 摘要 |
The invention relates to a recycling system for blast works, comprising at least one elongated, essentially horizontal trough 1, which is open at the top and is disposed below the bottom of a floor grate 10, and a vertically movable, elongated lid member 4, which is disposed on top of the said trough, and members 16 for vertical positional displacement of the lid member, which trough 1 and lid member 4 form between them a drainage channel 7 for the blast material, the side edges of the lid member, when the lid member 4 is in the raised position, being at a distance from the side edges of the trough, thereby forming two elongated suction gaps for the introduction of blast material into the drainage channel 7. <IMAGE>
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