Pick out the wrong statement pertaining to the roll crushers?
Correct answer: C. Both the rolls run necessarily at the same speed
- A. Maximum feed size determines the required roll diameter
- B. For hard material's crushing, the reduction ratio should not exceed 4
- C. Both the rolls run necessarily at the same speed
- D. Reduction ratio and differential roll speed affect production rate & energy consumed per unit
- E. of surface produced
Explanation
Roll crushers need not operate at the same speed; differential speed is deliberately used to influence crushing, capacity, and energy consumption. Therefore, statement c is the wrong one.
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