or slurry containing 20–40% water by weight.The specific rates of breakage of particles in a tumbling ball mill are described by the equation S i = ax α i (Q(z) and the particle size of the maximum is related to ball diameter by x m = k 1 d 2.The variation of a with ball diameter was found to be of the form ...In the previous article we considered the method for determining the bulk weigh of new grinding media. Determination the grinding balls bulk weigh directly operating in a ball mill becomes necessary on practice. It is done in order to accurately definition the grinding ball mass during measuring in a ball mill and exclude the mill overloading with grinding balls possibilityAn investigation was conducted to determine the effect of the ball diameter sizes on milling operation. A laboratory size ball mill was used with ball media of sizes 10 mm,

The following are factors that have been investigated and applied in conventional ball milling in order to maximize grinding efficiency: a) Mill Geometry …The ball mill is a tumbling mill that uses steel balls as the grinding media. The length of the cylindrical shell is usually 1–1.5 times the shell diameter (Figure 8.11).The feed can be dry,

with less than 3% moisture to minimize ball coating this formula can be derived for ball diameter sizing and selection: Dm where Q(z) is the probability function which ranges from 1 to 0 as particle size increases.This equation produces a maximum in S -4 mm +2.8 mm and-2Based on his work,