The speed of a rotary drum vacuum filter may be about _____________ rpm?
Correct answer: A. 1
- A. 1
- B. 50
- C. 100
- D. 500
Explanation
Rotary drum vacuum filters rotate slowly so that cake formation, washing, dewatering, and discharge can occur during each revolution. A typical drum speed is about 1 rpm, not tens or hundreds of rpm.
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