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Rod Mill Design Calculations
Model Input
Model Output
Feed rate to mill MTPH
Power Draw/Mill, HP (Table V),
Purple Cell
**
Feed rate to mill STPH
Number of Mills required (Table V)
Feed F
80
(
μm)
3.66
Rod Mill diameter (m) (Table V)
Product P
80
(
μm)
Rod Mill inside shell diameter (m) (Table V)
Work index Kwh/short ton
EF3
Diameter efficiency (Table iX)
Total work required to produce the product (kWh/s. ton)
Total Power required (updated), HP
Ratio of reduction
Rr
Per Mill Power Required (updated), HP
Optimum feed size (
μm)
Base Rod Length (m) (Table V)
Efficiency factor,
EF4
Rod Mill Length to Draw
Power in Gray Cell
(m) (Table V)
HPh/metric tonne
EF8
Total Power required, HP
Rod Mill Length (m) (updated)
Rro
Rod Length (m) (updated)
EF6
Total Power Required/Mill (updated Rod Length), HP
This is a Wet open-circuit grinding application.
**Select Nearest Mill with 40% Charge
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