How to Calculate and Solve for Crusher Reduction Ratio | Mineral Processing

October 5, 2021 Loveth Idoko

Last Updated on May 17, 2024

The image above represents crusher reduction ratio. To calculate crusher reduction ratio, two essential parameters are needed and these parameters are Gape Size (G) and Set Size (S).

The formula for calculating crusher reduction ratio:

R_r = ^G / _S

Where:

R_r = Crusher Reduction Ratio
G = Gape Size
S = Set Size

Let’s solve an example;
Find the crusher reduction ratio when the gape size is 20 and the set size is 10.

This implies that;

G = Gape Size = 20
S = Set Size = 10

R_r = ^G / _S
So, R_r = ²⁰ / ₁₀
R_r = 2

Therefore, the crusher reduction ratio is 2.

Calculating the Gape Size when the Crusher Reduction Ratio and the Set Size are Given

G = R_r x S

Where:

G = Gape Size
R_r = Crusher Reduction Ratio
S = Set Size

Let’s solve an example;
Find the gape size when the crusher reduction ratio is 8 and the set size is 4.

This implies that;

R_r = Crusher Reduction Ratio = 8
S = Set Size = 4

G = R_r x S
That is, G = 8 x 4
G = 32

Therefore, the gape size is 32.

Calculating the Set Size when the Crusher Reduction Ratio and the Gape Size are Given

S = ^G / _{R_r}

Where:

S = Set Size
R_r = Crusher Reduction Ratio
G = Gape Size

Let’s solve an example;
Find the set size when the crusher reduction ratio is 10 and the gape size is 30.

This implies that;

R_r = Crusher Reduction Ratio = 10
G = Gape Size = 30

S = ^G / _{R_r}
Then, S = ³⁰ / ₁₀
S = 3

Therefore, the set size is 3.

How to Calculate Crusher Reduction Ratio With Nickzom Calculator

Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the crusher reduction ratio.

To get the answer and workings of the crusher 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 Crusher Reduction Ratio under Mineral Processing

The screenshot below displays the page or activity to enter your values, to get the answer for the crusher reduction ratio according to the respective parameter which is the Gape Size (G) and Set Size (S).

Now, enter the values appropriately and accordingly for the parameters as required by the Gape Size (G) is 20 and Set Size (S) is 10.

Finally, Click on Calculate

As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the crusher reduction ratio and presents the formula, workings and steps too.