Cylindrical shell thickness of rotary drier is generally _______________ mm?
Correct answer: C. 6-8
- A. 2-3
- B. 18-22
- C. 6-8
- D. 12-15
Explanation
Rotary dryer shells must be thick enough to resist mechanical loads and deformation while remaining economical; a typical shell thickness is about 6 to 8 mm. Values near 2 to 3 mm are generally too thin for the rotating shell.
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