# How to Calculate and Solve for Classifiers Efficiency | Mineral Processing

The image above represents classifiers efficiency. To calculate classifiers efficiency, two essential parameters are needed and these parameters are Mass of Underflow (U) and Mass of Feed (F).

### The formula for calculating classifiers efficiency:

R = U/F

Where:

R = Classifier Efficiency
U = Mass of Underflow
F = Mass of Feed

Let’s solve an example;
Find the classifier efficiency when the mass of underflow is 15 and mass of feed is 3.

This implies that;

U = Mass of Underflow = 15
F = Mass of Feed = 3

R = U/F
That is, R = 15/3
R = 5

Therefore, the classifiers efficiency is 5.

### Calculating the Mass of Underflow when the Classifier Efficiency and the Mass of Feed are Given

U = R x F

Where:

U = Mass of Underflow
R = Classifier Efficiency
F = Mass of Feed

Let’s solve an example;
Find the mass of underflow when the classifier efficiency is 20 and the mass of feed is 4.

This implies that;

R = Classifier EfficiencyÂ  = 20
F = Mass of Feed = 4

U = R x F
Then, U = 20 x 4
U = 80

Therefore, the mass of underflow is 80.

### Calculating the Mass of Feed when the Classifier Efficiency and the Mass of Underflow are Given

F = U / R

Where:

F = Mass of Feed
R = Classifier Efficiency
U = Mass of Underflow

Let’s solve an example;
Find the mass of feed when the classifier efficiency is 8 and the mass of underflow is 32.

This implies that;

R = Classifier Efficiency = 8
U = Mass of Underflow = 32

F = U / R
That is, F = 32 / 8
F = 4

Therefore, the mass of feed is 4.

### How to Calculate Classifiers Efficiency Using Nickzom Calculator

Nickzom Calculator â€“Â The Calculator Encyclopedia is capable of calculating the classifier efficiency.

To get the answer and workings of the classifiers efficiency using the Nickzom Calculator â€“ The Calculator Encyclopedia.Â First, you need to obtain the app.

You can get this app via any of these means:

You can also try theÂ demoÂ version viaÂ https://www.nickzom.org/calculator

Apple (Paid)Â â€“Â https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to theÂ Calculator Map,Â then click onÂ Materials and MetallurgicalÂ underÂ Engineering.

Now, Click on Mineral Processing underÂ Materials and Metallurgical

Now, Click on Classifiers Efficiency under Mineral Processing

The screenshot below displays the page or activity to enter your values, to get the answer for the classifiers efficiency according to the respective parameter which is the Mass of Underflow (U) and Mass of Feed (F).

Now, enter the values appropriately and accordingly for the parameters as required by the Mass of Underflow (U)Â isÂ 15 and Mass of Feed (F) is 3.

Finally, Click on Calculate

As you can see fromÂ the screenshot above,Â Nickzom Calculatorâ€“ The Calculator Encyclopedia solves for the classifiers efficiency and presents the formula, workings and steps too.