What machinery is better for breaking rocks?

The type of machinery used for breaking rocks depends on the size and hardness of the rocks, as well as the desired end product. Some common machinery used for breaking rocks include:

1. **Jaw Crusher**: Jaw crushers are often used for primary crushing, as they are designed to break large rocks into smaller sizes. They work by using a moving jaw to compress the rock, and are suitable for hard and abrasive materials.

2. **Cone Crusher**: Cone crushers are another type of primary crusher, ideal for crushing medium-hard and hard rocks, such as basalt, granite, and dolomite. They work by using a rotating cone to compress the rock, and are known for producing high-quality aggregate and gravel.

3. **Impact Crusher**: Impact crushers are designed to crush soft and medium-hard rocks, like limestone and shale. They work by using high-speed rotors to collide with the rocks, breaking them into smaller pieces. Impact crushers are often used in secondary and tertiary crushing stages.

4. **Hammer Crusher**: Hammer crushers are designed to crush brittle and soft materials, like coal, salt, and plaster. They work by using high-speed rotating hammers to smash the material into smaller pieces. Hammer crushers are often used in secondary and tertiary crushing stages.

5. **Roll Crusher**: Roll crushers are designed to crush materials like coal, limestone, and clay. They work by using two rotating cylinders to compress the material, and are suitable for medium-hard and soft materials.

Ultimately, the best machinery for breaking rocks depends on the specific requirements of your project, including the type and size of the rocks, and the desired end product. It's recommended to consult with a professional engineer or equipment supplier to determine the most suitable machinery for your needs.