Which sand-making machine is most efficient for crushing pebbles

Pebbles are a common raw material for sand production, and the resulting sand is frequently utilised as high-quality aggregate in infrastructure projects. Presently, numerous machines are capable of processing pebbles into sand. Based on the properties of pebble material, OCP Heavy Industry offers two distinct equipment options for pebble sand production. Which pebble sand-making machine demonstrates superior efficiency?

The impact sand-making machine is a specialised piece of equipment for processing pebbles. Not only does it offer high operational efficiency, but it also produces well-shaped output particles. Many large and medium-sized pebble sand-making plants would first consider using these two types of equipment. Detailed introductions to the equipment are as follows.

1. Pebble Impact Crusher

The pebble impact crusher performs dual functions of sand production and shaping, with a throughput range of 16-550 tonnes per hour and finished sand output between 5-150 tonnes per hour. Featuring a simple vertical structure, it employs stone-on-stone and stone-on-iron principles to achieve material crushing and shaping. The new sand-making machine introduced by OCP Heavy Industry features a deep-cavity rotor design, boosting hourly output by over 30%. Its stone-on-iron crushing chamber maximises inter-particle interactions, reducing needle-like and flake-shaped particles while minimising irregular polyhedral content. This enhances concrete workability and flow retention, lowering water consumption per cubic metre of concrete and thereby reducing costs.

2. Pebble Sand Maker

The working principle involves material entering the high-speed rotating impeller via the feed hopper. Accelerated to 50–70 m/s, it is ejected from uniformly distributed guide vanes and flow channel liners, impacting the counter-plate within the crushing chamber. Fragmented and rebounded, the material changes direction and collides with further ejected particles. Through repeated collisions and frictional crushing, the material is discharged via the lower outlet. The sand produced exhibits excellent particle shape—cubic in form—with well-graded size distribution and adjustable fineness modulus, meeting high-quality specifications.

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