Mechanical Operations
According to Taggart's rule for selecting between a gyratory crusher and a jaw crusher; the later should be used, if the hourly tonnage to be crushed divided by the square of the gape expressed in cm is less than

0.00184
0.0184
1.84
0.184

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Mechanical Operations
Rod mills employed for grinding

Is useful for handling sticky materials
Employ a steel shell having L/D ratio of 1.5 to 3.0
Employ steel rods of 2-12 cms diameter extending over full length of the mill
All of these

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