A tube mill as compared to a ball mill__________________?
Correct answer: D. All A., B. and C.
- A. Employs smaller balls
- B. Gives finer size reduction but consumes more power
- C. Has larger length/diameter ratio (>2 as compared to 1 for ball mill)
- D. All A., B. and C.
Explanation
A tube mill has a larger length-to-diameter ratio, uses smaller grinding balls, and generally produces finer material at higher power consumption than a ball mill. Therefore, all three statements are correct.
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