BWi Bond Work Index of Mills

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SITUATION
Based on Net Power Available.
Feed Size, F80, microns
Product Size, P80, microns
Total Plant Throughput, ton/hr
Specific Energy, kWh/ton
Ratio of Net Power Available/Actual Plant Capacity (Cells in Yellow)
Net Power Available, kW
Number of Mills for the Task
Net kW / Mill
Available Net Power/Mill (Copied from the other Blue Cell)
MILL DIMENSIONS AND OPERATING CONDITIONS :
Eff. Diameter (ft)
Mill Diameter, inside liners.
Eff. Length (ft)
Effective Grinding Lenght.
Mill Speed % Critical
Rotational Mill Speed, expressed as a percentage of the critical centrifugation speed of the mill.
Mill rpm
L/D
Effective Length to Diameter Ratio.
% Solids in the Mill
Ore Density, ton/m3
Slurry Density, ton/m3
Balls Density, ton/m3
Charge % Filling
A
Balls % Filling
B
Interstitial Slurry Filling,%
C
Lift Angle, (°)
D
Mill Charge Weight, tons
Apparent Density ton/m3
Corresponds to the ratio between the Total Charge Weight and its Apparent Volume (including interstitial voids).
Charge Volume m3
Ball Charge
Slurry Interstitial
Slurry above Balls
Mill Power, kW KiloWatts
 Balls
Fraction of the Total Mill Power Draw contributed by the Ball Charge.
 Overfilling
Fraction of the Total Mill Power Draw contributed by the Overfilling Slurry on top of the "kidney".
 Slurry
Fraction of the Total Mill Power Draw contributed by the Interstitial Slurry in the ball charge.
 Net Total
"Tune this" to the known installed Power/Mill value by properly adjusting the Cells in Gray
 % Losses
 Gross Total Mill Draw (kW)
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