Grinding efficiency of a ball mill is of the order of _______________ percent?
Correct answer: A. 1-5
- A. 1-5
- B. 40-50
- C. 75-80
- D. 90-95
Explanation
Only a small fraction of the energy supplied to a ball mill produces new particle surface; most is lost through friction, heat, and deformation. Its grinding efficiency is therefore commonly of the order of 1 to 5 percent.
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