There are many stones that can be broken in the crushing production line, such as limestone, marl, granite, diabase, basalt and so on. The stones are classified into two categories: hard rock and soft rock, the hardness of hard rock is basically above 150Mpa, and the hardness of soft rock is below 150Mpa. Because the crushing difficulty of hard rock is higher, the wear of the crusher is large, there is a significant difference in the processing of hard rock and soft rock.
Whether it is soft rock or hard rock, the basic goal of crushing is to break large pieces of rock into the small particles or aggregates that meet the requirements for subsequent processing or use. The processes involved in both types are similar, usually including loading, coarse crushing, medium crushing, fine crushing, and screening.
1, The jaw crusher and cone crusher are commonly used for crushing hard rock. The cone crusher is suitable for treating highly hard rocks by laminating principle for crushing. Additionally, the impact crusher (sand making machine) is commonly used to shape hard rocks and eliminate needle-like fragments and internal cracks generated during the stone crushing process, thereby enhancing the quality of the final product.
2, The jaw crusher and impact crusher are commonly used for crushing soft rock. The impact crusher adopts the impact crushing, which is suitable for processing medium and low hardness rocks. The processed sand and stone materials have a uniform particle size, low content of needle flakes, reasonable grading, and high quality finished products.
Recommended configuration for materials with different hardness
1, Medium and brittle materials: feeder + jaw crusher + impact crusher + sand making machine + sand washing machine + vibrating screen + belt conveyor
2, Hard materials: feeder + jaw crusher + cone crusher + sand making machine + sand washing machine + vibrating screen + belt conveyor
When selecting a crusher, it is essential to make a decision based on the rock’s hardness characteristics. Cone crushers are suitable for hard rocks, while impact crushers and hammer crushers are more appropriate for soft rocks. If you want to know more about the crusher machine, please feel free to contact the Online Service at any time.