The main links of iron ore crushing from coarse crushing to fine crushing are as follows:

Iron ore crushing

1. Primary crushing: the core choice of primary crushing equipment

In the primary crushing process of ore, jaw crusher and gyratory crusher are commonly used equipment. Jaw crusher is a traditional primary crushing equipment with the characteristics of stable structure and strong applicability, and is widely used in ore dressing plants of various sizes. Gyratory crusher is more suitable for large-scale mining scenes. It has strong processing capacity and can easily cope with high-output tasks. It can efficiently complete the initial crushing of ore, provide strong support for subsequent processing links, and ensure the smoothness and efficiency of the entire production process.

2. Secondary crushing: the balance between efficiency and cost of medium crushing equipment

Secondary crushing equipment mainly includes fine jaw crusher and cone crusher. Fine jaw crusher has low investment and easy maintenance, which is suitable for small selection sites, but the discharge particle size is relatively large. Cone crusher has a complex structure and high cost, but it can produce finer particle size, and the wear-resistant parts have a long life. The use of large selection sites can reduce the overall cost, which is an ideal choice for pursuing efficient production.

3. Fine crushing and screening: the key step to improve the dry selection rate

The secondary crushing materials are screened through the circular vibrating screen, and the materials below 10mm are directly dry selected, 10-40mm are finely crushed, and the materials above 40mm are re-crushed. There are various fine crushing equipments, and the hammer crushing has low cost but poor efficiency. New equipments such as high-efficiency fine crusher and vertical shaft impact super fine crusher can significantly improve the fine crushing efficiency and reduce the waste of resources, which is an important link in optimizing the crushing process.