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The critical speed of a ball mill in rpm whose diameter is 12 in. with grinding balls of diameter 1/2 in. is approximately b. 50 a. 60 rpm. d. 80 5. It is defined as the efficiency of technical grinding compared with that of laboratory crushing experiments. a. Grinding Efficiency b. Bond Work Index c. 90 c. Practical Energy Efficiency d. none of these

The critical speed of a ball mill in rpm whose diameter is 12 in. with grinding balls of diameter 1/2 in. is approximately b. 50 a. 60 rpm. d. 80 5. It is defined as the efficiency of technical grinding compared with that of laboratory crushing experiments. a. Grinding Efficiency b. Bond Work Index c. 90 c. Practical Energy Efficiency d. none of these

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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The critical speed of a ball mill in rpm whose diameter is 12 in. with grinding balls of diameter 1/2 in. is approximately b. 50 a. 60 d. 80 5. It is defined as the efficiency of technical grinding compared with that of laboratory crushing experiments. 4. a. Grinding Efficiency b. Bond Work Index rpm. c. 90 c. Practical Energy Efficiency d. none of these
Transcribed Image Text:The critical speed of a ball mill in rpm whose diameter is 12 in. with grinding balls of diameter 1/2 in. is approximately b. 50 a. 60 d. 80 5. It is defined as the efficiency of technical grinding compared with that of laboratory crushing experiments. 4. a. Grinding Efficiency b. Bond Work Index rpm. c. 90 c. Practical Energy Efficiency d. none of these
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