Grinding Media Pattern & Charge Calc

GRINDING MEDIA PATTERN

Mill Diameter Mill speed

5m 14.69 rpm Comp. 1 Comp 2

Comp. length eff. m Lining thickness mm Torque factor Media bulk weight t/m Degree of filling q Diameter eff. m Critical speed % Compartment volume Media weight t

5.64 95 0.73 4.3 26.9 4.81 76.16 102.5 119

8.63 42 0.69 4.5 27.7 4.92 77.00 163.8 204

Ball Charge Calculations Compartment 1 ball size ball dia MT Balls Correction 90 mm 80 mm 70 mm 60 mm sum

90 80 70 60

27 38 25 28 119

3 4 2 3 12

gm/ball

m2/mt

2989 2099 1406 886

8.51 9.58 10.95 12.77 M2/MT

Compartment 2 ball size 25 mm 20 mm 17 mm Sum

MT Balls 25 20 17

82 82 41 204.2

Correction 8 8 4 20.4

gm/ball 64 33 20

m2/mt 30.65 38.31 45.07 M2/MT

m2 232 363 273 363 1,231 10.39

m2 2,503 3,129 1,841 7,473 36.60