Equipment in Primary Crusher - Jaw Crusher

A jaw crusher is a type of primary crushing equipment commonly used in mining and aggregate processing plants. It is designed to reduce large rocks into smaller ones by means of compression. The basic working principle of a jaw crusher is that it uses two plates, one fixed and one moving, to crush the material between them. The moving plate is powered by a motor and travels relative to the fixed plate, thus breaking the material into smaller pieces.

Here are some key points about jaw crushers:

1. **Primary Crushing**: Jaw crushers are often the first stage in the reduction process of hard materials. They are used to reduce the size of large rocks into smaller rocks, gravel, or stone dust.

2. **Feeding**: The jaw crusher takes in the raw material through an opening at the top. The material is then subjected to compression between the moving (machine) side of the jaw and the fixed (stationary) side of the jaw.

3. **Swing Jaw**: The moving part of the jaw crusher is known as the swing jaw. It moves in a back-and-forth motion, creating the necessary compression to break the material.

4. **CSS (Closed-Side Setting)**: The distance between the fixed and moving jaws is known as the CSS. This determines the size of the final product.

5. **Cone Crusher**: In some cases, the jaw-crushed material may pass through a secondary crusher, such as a cone crusher, for further reduction.

6. **Capacity**: Jaw crushers are available in various sizes and capacities, depending on the application and desired output.

7. **Material**: Jaw crushers can handle various materials, including granite, basalt, limestone, and others.

8. **Safety and Maintenance**: Proper operation and regular maintenance are crucial for the safe and efficient functioning of jaw crushers.

Jaw crushers are essential in the mining and construction industries, as they enable the efficient processing of raw materials into usable forms. They are widely used in the extraction of metals and minerals, as well as in construction projects that require crushed stone aggregate.