how to granite rocks in double toggle jaw crusher

Using a double-toggle jaw crusher to crush granite involves several key steps. Here's a detailed guide to ensure optimal performance and safety:

Steps for Using a Double-Toggle Jaw Crusher with Granite:

1. Preparation:

   • Safety Gear: Wear appropriate personal protective equipment (PPE) including gloves, safety glasses, and ear protection.
   • Inspection: Examine the crusher for any signs of wear or damage. Make sure all safety guards and devices are in place.
   • Material Check: Ensure that the granite rocks to be crushed are free of debris and contaminants that could damage the machine.

2. Setting Up the Crusher:

   • Positioning: Place the crusher on a solid surface to avoid vibrations and ensure stability.
   • Settings Adjustment: Adjust the size settings of the jaw crusher to match the desired output size of the crushed granite. This typically involves setting the gap between the fixed jaw and the toggle plate.

3. Feeding the Crusher:

   • Loading: Use suitable equipment (such as a conveyor belt or a loader) to feed the granite rocks into the crusher’s hopper. Ensure a consistent flow to avoid overloading.
   • Distribution: Spread the granite evenly across the crusher chamber to ensure uniform crushing.

4. Crushing Operation:

   • Start the Crusher: Engage the power to start the crusher. Double-toggle jaw crushers have two toggle plates and two jaws. The first toggle plate moves up and down while the second moves back and forth.
   • Initial Crush: The large chunks of granite are initially crushed by the upward and downward movement of the first jaw.
   • Secondary Crush: The crushed material falls lower into the jaws where the second toggle plate applies additional force for finer crushing.

5. Monitoring:

   • Observation: Continuously monitor the crusher’s operation. Listen for unusual noises and observe the output for any irregularities.
   • Adjustments: If the output size is not as desired, stop the crusher and adjust the settings accordingly.

6. Finishing:

   • Stop the Crusher: Once the desired crushing is complete, turn off the machine following the prescribed shutdown procedure.
   • Inspection and Maintenance: Inspect the machinery for any potential issues that need addressing. Clean the crusher and perform any required maintenance.

Tips for Optimal Crushing:

• Regular Maintenance: Schedule regular maintenance checks to ensure the machine stays in good working condition.
• Lubrication: Keep all moving parts well-lubricated to reduce wear and tear.
• Feed Control: Maintain a steady and controlled feed rate to prevent overloading and to ensure consistent output quality.
• Use Quality Materials: Only use high-quality, tough, and durable toggle plates and jaws to withstand the hardness of granite.

Safety Considerations:

• Emergency Stops: Always know the location of emergency stop buttons and ensure that all operators are trained in using them.
• Clear Surroundings: Keep the area around the crusher clear of unauthorized personnel to avoid accidents.
• Training: Ensure all operators are adequately trained in operating the double-toggle jaw crusher and are aware of the safety protocols.

By following these steps and considerations, you can effectively and safely crush granite rocks using a double-toggle jaw crusher.