What machine can turn stones into sand?

The machine that can turn stones into sand is commonly referred to as a crusher or a grinder, depending on the size of the stones and the desired particle size of the sand. Here are the types of machines that can perform this task:

1. **Jaw Crusher**: This is a type of crusher that breaks down materials using a fixed jaw and a moving jaw. It is suitable for stones of various sizes and can be used in both primary and secondary crushing stages.

2. **Cone Crusher**: A cone crusher is similar to a jaw crusher but is designed to handle harder materials. It uses a spinning bowl with a concave surface to crush the stones into smaller particles.

3. **Impact Crusher**: This machine uses high-speed impact to crush stones. It is often used for materials that are difficult to crush or for stones that need to be reduced to a fine particle size.

4. **Hammer Crusher**: A hammer crusher uses rotating hammers to crush stones. It is suitable for softer materials and can produce a fine particle size.

5. **Roll Crusher**: This crusher uses rollers to crush stones. It is often used for materials that are not too hard and for production of medium-sized sand.

6. **Vibrating Screen**: After the stones are crushed, a vibrating screen can be used to separate the crushed material into different particle sizes, including sand.

7. **Sand Maker**: Also known as a vertical shaft impact crusher, this machine is designed specifically for producing sand from stones. It uses high-speed rotation and crushing to produce fine sand particles.

These machines can be used individually or in combination to achieve the desired sand particle size and production capacity. The choice of machine depends on the specific requirements of the project, including the type of stone, the desired output, and the availability of the equipment.