#### PDF Chapter 20: Size Reduction Equipment for Size Reduction, Care and ...

p Size reduction ratio • Coarse grinding has RRs below 8:1 • Fine grinding can exceed 100:1 • Grinding of coarse particles in which the increase in surface area per unit mass is relatively small, Kick's Law is a reasonable approximation ... • When the ball mill is rotated, the balls are carried by the mill wall nearly to the top ...