### show that critical speed of a ball mill=1/2*g/r r

show that critical speed of a ball mill=1/2*g/r r. effect of milling environment on the breakage rates in dry and wet in ball milling the rates of breakage vary primarily with the size distribution of powder in the mill lizenithne and copper ore show time dependent breakage rates under both dry and wet grinding conditions . g; + h; —.