How to calculate the productivity of a coal crusher?

To calculate the productivity of a coal crusher, you'll need to consider several key factors and perform some basic calculations. Here’s a step-by-step guide:

1. Determine the Input and Output

Measure the Feed Rate:

• Input (Feed) Capacity: The amount of coal fed into the crusher per unit time (typically measured in tons per hour, TPH).

Measure the Output:

• Output Capacity: The amount of crushed coal produced by the crusher per unit time (also measured in TPH).

2. Calculate the Crushing Efficiency

This includes the ratio of the amount of crushed coal produced to the amount of coal fed into the crusher.

\[ \text{Crushing Efficiency} = \left( \frac{\text{Output Capacity}}{\text{Input Capacity}} \right) \times 100 \]

3. Assess Work Input

Measure the work input in terms of energy consumed by the crusher using this formula:

\[ \text{Specific Power Consumption} = \frac{\text{Energy (kW)}}{\text{Output (TPH)}} \]

4. Evaluate the Particle Size Distribution

Determine the size reduction achieved by analyzing the size distribution of both feed and product.

5. Calculate Overall Productivity

Overall productivity is generally the output capacity of the coal crusher per unit time.

\[ \text{Productivity} = \text{Output Capacity (TPH)} \]

Example Calculation:

1. Input Capacity (Feed): 100 TPH of coal.
2. Output Capacity (Product): 95 TPH of crushed coal.

3. Energy Consumed: 200 kW.

   • Crushing Efficiency: \[ \text{Crushing Efficiency} = \left( \frac{95 \text{ TPH}}{100 \text{ TPH}} \right) \times 100 = 95\% \]

   • Specific Power Consumption: \[ \text{Specific Power Consumption} = \frac{200 \text{ kW}}{95 \text{ TPH}} \approx 2.1 \text{ kW/TPH} \]

   • Overall Productivity: \[ \text{Productivity} = 95 \text{ TPH} \]

By conducting these evaluations, you can assess and optimize the productivity of your coal crusher. Regular monitoring and adjustments based on operating conditions will further enhance efficiency and output.