## Ball Mill Design/Power Calculation

The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 and maximum ‘chunk size’, product size as P80 and maximum and finally the type of circuit open/closed

## What is Utilization + How do You Calculate Utilization

Assuming everyone has 2,000 available hours, you can calculate their billing rate like this: (100,000 + 20,000 + 24,000) / 2,000 = 144,000 / 2,000 = 72 Leslie's company would need to charge $72 an hour to cover their expenses and realize a 20% profit

## Ball Mill Design/Power Calculation

The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 and maximum ‘chunk size’, product size as P80 and maximum and finally the type of circuit open/closed

## What is Utilization + How do You Calculate Utilization

Assuming everyone has 2,000 available hours, you can calculate their billing rate like this: (100,000 + 20,000 + 24,000) / 2,000 = 144,000 / 2,000 = 72 Leslie's company would need to charge $72 an hour to cover their expenses and realize a 20% profit