Choosing the right crusher can make big stones shrink in seconds. It's as simple as that

In the process of sand and gravel processing, most of the stones mined have relatively large particle sizes, some of which can reach around 1000mm. It is not an exaggeration to describe them as giant stones. Many people are worried about how large stones can be broken into small ones? What equipment is needed? Below is a detailed introduction for you.

1、 What are the types of large stone crushers?

Jaw crusher and heavy hammer crusher are common large stone crushers, but they differ in production capacity, applicable materials, and discharge conditions. Only by understanding them clearly can they be fully utilized.

1. Jaw crusher

Jaw crusher is the main operating equipment in the coarse crushing process of sand and gravel production lines. It can crush and process more than 200 types of materials, including various soft and hard materials with a particle size of ≤ 1000mm. The production capacity is up to 1200 tons per hour, and the finished product specifications are between 10-300mm. There are various types of jaw crushers, including PE jaw crushers, CSZ jaw crushers, and VESZ European version jaw crushers, which can meet different production needs.

Jaw crushers are often combined with impact crushers or cone crushers in production lines. When the raw material size is small, they can also be directly combined with sand making machines for operation. During operation, the electric motor drives the eccentric shaft to rotate through the pulley, and the moving jaw periodically approaches and leaves the stationary jaw, achieving multiple crushing processes such as extrusion, rubbing, and grinding of materials. Therefore, the main crushing principle of the jaw crusher is extrusion crushing.

2. Heavy hammer crusher

The heavy hammer crusher is a crushing equipment that crushes and shapes at once. It is more suitable for medium and brittle stone materials with compressive strength not exceeding 150MPa and particle size not exceeding 1200mm. In addition, the processing capacity of the heavy hammer crusher is also very strong. The hourly production capacity of large heavy hammer crushers can reach 800 tons.

The heavy hammer crusher is a cost-effective equipment. The force of one machine is basically equivalent to the two-stage crushing combination of jaw crusher and impact crusher, simplifying the production process. In addition, the heavy hammer crusher uses impact force for crushing. When the material enters the crusher, it first suffers from the impact of the hammer head, and then rushes to the baffle and screen inside the frame at high speed. In addition, the materials collide with each other, and after multiple repeated impacts, grinding, extrusion and crushing, the finished product has uniform particle size and good particle shape.

2、 Which of the two devices is better to use?

In summary, jaw crushers have a high crushing ratio and can crush rocks of different hardness, but can only achieve coarse crushing. To achieve finer processing, it is still necessary to use a fine crushing machine; The heavy hammer crusher has high production capacity and good particle size and shape of finished products, but it is only suitable for crushing medium and brittle materials, and impact crushing consumes a lot of wear and tear on vulnerable parts of the equipment, resulting in high maintenance and replacement costs in the later stage.