To break granite rocks in a double toggle jaw crusher, you need to understand the working mechanism of the crusher and the properties of granite. Here’s a detailed explanation:
Working Mechanism of a Double Toggle Jaw Crusher
A double toggle jaw crusher operates with two toggle plates and two jaws. The mechanism is more complex than a single toggle jaw crusher but offers several advantages:
- Two Toggle Plates: The double toggle mechanism has two toggle plates, one on each side of the crusher. These plates are connected to the moving jaw and the frame of the crusher.
- Crushing Action: The crushing action is achieved by the movement of the moving jaw, which is pivoted at the top. The toggle plates push the moving jaw towards the fixed jaw, crushing the material in between.
- Movement: The movement of the moving jaw is a combination of vertical and horizontal strokes, which provides a more effective crushing action compared to a single toggle jaw crusher.
Properties of Granite
Granite is a hard and tough rock with high compressive strength. It requires significant force to break it down into smaller pieces. The properties of granite that affect the crushing process include:
- Hardness: Granite is very hard, which means it requires a crusher with a high crushing force.
- Brittleness: Despite its hardness, granite is brittle, which means it can be broken down by applying sufficient force.
- Density: Granite has a high density, which means it is heavy and requires a robust crusher to handle the load.
Steps to Break Granite Rocks in a Double Toggle Jaw Crusher
- Feed the Granite Rocks: The granite rocks are fed into the crusher through the feed opening. The size of the feed opening should be large enough to accommodate the size of the granite rocks.
- Adjust the Crusher Settings: Adjust the settings of the crusher to ensure that the gap between the moving jaw and the fixed jaw is appropriate for the size of the granite rocks. The gap should be small enough to crush the rocks but large enough to allow the crushed material to pass through.
- Start the Crusher: Start the crusher and allow it to reach its operating speed. The double toggle mechanism will start moving the jaws, creating the crushing action.
- Monitor the Crushing Process: Monitor the crushing process to ensure that the granite rocks are being broken down effectively. Adjust the settings if necessary to achieve the desired size of the crushed material.
- Collect the Crushed Material: Once the granite rocks are crushed, the material will pass through the discharge opening and can be collected for further processing or use.
Safety Considerations
- Wear Protective Gear: Always wear appropriate protective gear, including safety glasses, gloves, and ear protection, when operating the crusher.
- Follow Manufacturer’s Instructions: Follow the manufacturer’s instructions for operating and maintaining the crusher to ensure safe and efficient operation.
- Regular Maintenance: Perform regular maintenance on the crusher to keep it in good working condition and to prevent any potential hazards.
By understanding the working mechanism of a double toggle jaw crusher and the properties of granite, you can effectively break granite rocks into smaller pieces for further processing or use.
