The roller crusher is also called the roller crusher or the roller sand maker. It is a relatively old-fashioned crushing equipment. After countless upgrades and transformations, the manufacturing process is more mature. The device has a simple structure and less over-crushing. The tooth profile, size and arrangement on the roller surface can be changed with the nature of the material.

Medium-hard and soft ore can be crushed to medium and fine. For example, in sulfuric acid plants, the pyrite ore is usually crushed by a roller crusher to make the diameter reach 20~30mm, and then enters the double-roll crusher for the second time. The secondary crushing makes the ore diameter less than 5mm, which meets the requirements of the boiling furnace.
The double-roller rock crusher can be used to finely crush various high and medium hardness ores and rocks in the industrial sectors such as mineral processing, chemical industry, cement, refractory materials, abrasives, and construction materials, especially for the production of guar and mung beans in the construction material industry Products such as sand have better effects than general crushing machinery.
The working principle of the roller rock breaker:
The crushed material is dropped between the two rollers through the feeding port and crushed, and the finished material falls naturally. When encountering over-hard or unbreakable objects, the rollers can automatically retract by the action of hydraulic cylinders or springs to increase the gap between the rollers, and over-hard or unbreakable objects fall down, thereby protecting the machine from damage. There is a certain gap between the two rollers rotating in opposite directions, and the granularity of product discharge can be controlled by changing the gap.