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Regrind Ball Mill Design Calculations
Model Input
Model Output
Feed F
80
(μm)
Total work required to P80 (kwh/short ton)
Product P
80
(μm)
Total kW to P80
(raw-unajusted)
Work index Kwh/short ton
Total HP to P80 (raw-unajusted)
Reduction ration
if < 6 then ->
EF2 (Table VIII)
Feed rate to regrind mill MTPH
EF5
Feed rate to regrind mill STPH
EF7 (Common of Regrinds)
Suggested L/D Ratio (Table VI)
1.75-2.0
D (m) (Table VII) (inside liners)
L (m) (Table VII)
Ball Size (mm) (Table VII)
40
% Ball Charge (Table VII)
Power (HP) (Table VII)
S
S,
HP
?
Ball Charge (MT) (Table VII)
HP Loss for small balls
Power, HP (calc from Table VII data)
Power, HP (calc from efficiency factors)
L Updated (m) (Table VII)
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