______________________ balls capable of grinding the feed in a ball mill gives the maximum efficiency ?
Correct answer: B. Minimum size
- A. Cast iron
- B. Minimum size
- C. Maximum size
- D. Elliptical
Explanation
The most efficient charge uses the smallest balls that can still break the feed, because smaller balls provide more contact points and a larger grinding surface. Oversized balls are needed only when the feed is too coarse for the smaller balls to fracture.
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