Discussion
Comparison of four conveyors for a 60 m horizontal grain run at 100 t/h.
| Conveyor | Power (kW) | Breakage (per cent) | Enclosed |
|---|---|---|---|
| Belt | 6.5 | 0.05 | No |
| Drag | 11.0 | 0.15 | Yes |
| Screw | 19.5 | 0.60 | Yes |
| Pneumatic | 42.0 | 0.90 | Yes |
Which conveyor best suits a dusty product where enclosure matters and breakage must stay low?
Answer: A
Correct answer: Drag conveyor
Enclosure rules out the belt, which is the only one of the four that is open. Among the three enclosed options the drag conveyor has both the lowest power at 11 kW and much the lowest breakage at 0.15 per cent, against 0.60 for the screw and 0.90 for pneumatic. It is the obvious choice once enclosure is a requirement.
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