The image above represents passing reduction ratio. To calculate passing reduction ratio, two essential parameters are needed and these parameters are 80% Passing Size of Feed (F80) and 80% Passing Size of Product (P80).
The formula for calculating passing reduction ratio:
Pr = F80 / P80
Where:
Pr = Passing Reduction Ratio
F80 = 80% Passing Size of Feed
P80 = 80% Passing Size of Product
Let’s solve an example;
Find the passing reduction ratio when the passing size of feed is 21 and the passing size of product is 3.
This implies that;
F80 = 80% Passing Size of Feed = 21
P80 = 80% Passing Size of Product = 3
Pr = F80 / P80
So, Pr = 21 / 3
Pr = 7
Therefore, the passing reduction ratio is 7.
Calculating the Passing Size of Feed when the Passing Reduction Ratio and the Passing Size of Product are Given
F80 = Pr x P80
Where:
F80 = 80% Passing Size of Feed
Pr = Passing Reduction Ratio
P80 = 80% Passing Size of Product
Let’s solve an example;
Find the passing size of feed when the passing reduction ratio is 3 and the passing size of product is 9.
This implies that;
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Pr = Passing Reduction Ratio = 3
P80 = 80% Passing Size of Product = 9
F80 = Pr x P80
Then, F80 = 3 x 9
F80 = 27
Therefore, the passing size of feed is 27.
Read more:Â How to Calculate and Solve for Crusher Reduction Ratio | Mineral Processing
Calculating the Passing Size of Product when the Passing Reduction Ratio and the Passing Size of Feed are Given
P80 = F80 / Pr
Where:
P80 = 80% Passing Size of Product
Pr = Passing Reduction Ratio
F80 = 80% Passing Size of Feed
Let’s solve an example;
Find the passing size of product when the passing reduction ratio is 12 and the passing size of feed is 36.
This implies that;
Pr = Passing Reduction Ratio = 12
F80 = 80% Passing Size of Feed = 36
P80 = F80 / Pr
So, P80 = 36 / 12
P80 = 3
Therefore, the passing size of product is 3.
Read more:Â How to Calculate and Solve for Capacity of Jaw Crusher | Mineral Processing
How to Calculate Passing Reduction Ratio Using Nickzom Calculator
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the passing reduction ratio.
To get the answer and workings of the passing reduction ratio 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
To get access to the professional version via web, you need to register and subscribe 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 Mineral Processing under Materials and Metallurgical
Now, Click on Passing Reduction Ratio under Mineral Processing
The screenshot below displays the page or activity to enter your values, to get the answer for the passing reduction ratio according to the respective parameter which is the 80% Passing Size of Feed (F80) and 80% Passing Size of Product (P80).
Now, enter the values appropriately and accordingly for the parameters as required by the 80% Passing Size of Feed (F80) is 21 and 80% Passing Size of Product (P80) is 3.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the passing reduction ratio and presents the formula, workings and steps too.
