The image above represents the specific power of mill. To calculate the specific power of mill, three essential parameters are needed and these parameters are Work Index of Ground Material (wi), 80% Product Size (P80)Â and 80% Feed Size (F80).
The formula for calculating the specific power of mill:
E = wi(10/√(P80) – 10/√(F80))
Where:
E = Specific Power of Mill
w = Work Index of Ground Material
P80Â = 80% Product Size
F80Â = 80% Feed Size
Let’s solve an example;
Find the specific power of mill when the work index of ground material is 10, the 80% product size is 14 and the 80% feed size is 8.
This implies that;
w = Work Index of Ground Material = 10
P80 = 80% Product Size = 14
F80 = 80% Feed Size = 8
E = wi(10/√(P80) – 10/√(F80))
That is, E = 10(10/√(14) – 10/√(8))
E = 10(10/3.741Â –Â 10/2.82)
E = 10(2.67 – 3.535)
So, E = 10(-0.86)
E = -8.629
Therefore, the specific power of mill is – 8.629 W.
Read more:Â How to Calculate and Solve for Shaft Power | Ball Mill Sizing
How to Calculate Specific Power of Mill Using Nickzom Calculator
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the specific power of mill.
To get the answer and workings of the specific power of mill using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.
You can get this app via any of these means:
Web – https://www.nickzom.org/calculator-plus
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To get access to the professional version via web, you need to register and subscribe for NGN 2,000 per annum to have utter access to all functionalities.
You can also try the demo version via https://www.nickzom.org/calculator
Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Materials and Metallurgical under Engineering.
Now, Click on Ball Mill Sizing under Materials and Metallurgical
Now, Click on Specific Power of Mill under Ball Mill Sizing
The screenshot below displays the page or activity to enter your values, to get the answer for the specific power of mill according to the respective parameters which is the Work Index of Ground Material (wi), 80% Product Size (P80)Â and 80% Feed Size (F80).
Now, enter the value appropriately and accordingly for the parameter as required by the Work Index of Ground Material (wi) is 10, 80% Product Size (P80) is 14 and 80% Feed Size (F80) is 8.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the specific power of mill and presents the formula, workings and steps too.
