To crush river pebbles into small stones, you'll typically need a combination of the following machines:
Jaw Crusher: Used for the primary crushing stage, breaking large river pebbles into smaller, more manageable pieces.
Cone Crusher or Impact Crusher: These are used for secondary crushing. A cone crusher crushes further by squeezing the material between a gyrating spindle and a concave hopper. An impact crusher uses impact force to break down materials.
Vibrating Feeder: Ensures a consistent feed of the raw river pebbles into the crushers.
Vibrating Screen: Separates crushed materials into different sizes. The larger particles are sent back to the crusher for further crushing.
Sand Making Machine (Vertical Shaft Impact Crusher): If you need finer particulate material or sand from the crushed stones, this machine is used in the tertiary stage.
Belt Conveyor: For transporting materials between different stages of the crushing process.
In setting up the crushing line, you would configure these machines to work in conjunction to efficiently crush and sort the river pebbles into the desired small stones.