Chemical Engineering Mcqs

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

Submitted By: Ali Uppal

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