Hold up of material in a operating rotary drier is in the range of___________________?
Correct answer: A. 0.05 to 0.15
- A. 0.05 to 0.15
- B. 0.25 to 0.50
- C. 0.5 to 0.8
- D. 0.8 to 0.9
Explanation
Rotary dryers normally operate with a small fraction of their internal volume occupied by solids, commonly about 0.05 to 0.15. Excessive holdup reduces gas-solid contact and can overload the dryer.
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