Actual operating speed of a ball mill may vary from 65 to 80% of the critical speed. Which of the following duties would require the ball mill to be operated at maximum percentage of critical speed? (A) Wet grinding in low viscous suspension (B) Wet grinding in high viscous suspension (C) Dry grinding of large particles (upto 1.25 cms) (D) Dry grinding of large particles in un-baffed mills

Actual operating speed of a ball mill may vary from 65 to 80% of the
critical speed. Which of the following duties would require the ball mill to
be operated at maximum percentage of critical speed?
(A) Wet grinding in low viscous suspension
(B) Wet grinding in high viscous suspension
(C) Dry grinding of large particles (upto 1.25 cms)
(D) Dry grinding of large particles in un-baffed mills
by

1 Answer

Answer :

(D) Dry grinding of large particles in un-baffed mills
by

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