The crushing ratio of a jaw crusher is a measure of how effectively the machine reduces the size of the feed material. It is calculated using the following formula:
\[ \text{Crushing Ratio} = \frac{\text{Size of the feed opening}}{\text{Size of the output material}} \]
Here’s a step-by-step method to calculate it:
Determine the Size of the Feed Opening: Measure the maximum size of the material that can be fed into the jaw crusher. This is typically the width and length of the opening at the top of the crusher.
Measure the Size of the Output Material: After the material has been crushed by the jaw crusher, measure the size of the output material. This can be determined by screening the crushed material to find the average size.
Calculate the Ratio: Divide the size of the feed opening by the size of the output material to get the crushing ratio.
For example, if the feed opening size is 500mm and the average output size is 50mm, the crushing ratio would be:
\[ \frac{500 \text{mm}}{50 \text{mm}} = 10 \]
This means that the jaw crusher has a crushing ratio of 10:1.
Keep in mind that the actual crushing ratio can vary based on several factors including the type of material being processed, the condition of the crusher, and the settings used during operation.
