The crushing system of a Molybdenum concentrator used three stages and one closed-circuit process, in which PXZ1200/160 gyratory crusher was used for coarse crushing, P890 cone crusher for medium crushing and P895 cone crusher for fine crushing. In 2017, the ore crushing process was reformed by adding a high-pressure roller mill between the original crushing and grinding systems, and expanding the particle size of the original crushing products from 12 ~ 0 mm to 25 ~ 0 mm, so as to enlarge the processing capacity of the original crushing system.

The main workshop Grinding System Adopts 1 section closed circuit grinding process, 1 #, and 2 # ball mills are MQY4.87 type and form a closed circuit with Fx710-gt 5 cyclone group, 3 # is MQY3.66 type ball mill and fx610-gt 4 cyclone group. After the high-pressure Roller Mill was put into operation in 2017, adding grinding steel balls was optimized in cooperation with the Kunming University of Science and Technology. The determined filling rate of steel balls was 43%, and the mass ratio of 80 mm, 70 mm, and 60 mm steel balls was 5∶3∶2.