The counterattack crusher uses high-speed impact to crush materials. When the material enters the action area of the plate hammer from the feeding port, it is subjected to high-speed impact by the plate hammer and undergoes the first crushing. The strong impact force throws the material onto the counterattack plate and crushes it again. The material bounced back by the counterattack plate falls back into the action area of the plate hammer and continues to repeat the above process until it is crushed to a size smaller than the discharge port, and is discharged from the discharge port due to its own weight.
product details
Application: It is used in building materials, mineral processing, chemical industry and electric power and other industrial sectors, mainly used to crush medium hardness and brittle materials.
Operational advantages
The replacement cost of consumable parts of an impact crusher is comparable to the maintenance cost of an expensive cone crusher or jaw crusher. Taking into account the choice of operating conditions, the use of more modern and technologically advanced materials makes it possible to increase service intervals and reduce maintenance costs by up to 30%.
Our company pioneered the integral liquid quenching process for high-chromium alloy plate hammers, overcoming the heat treatment defects of air-cooled uneven and impermeable, the material is made of eutectic high-chromium cast iron, the carbide structure M7C3 exceeds 50%, and the overall hardness reaches more than HRC61, which is more than 1.5 times the wear resistance of ordinary BTMCr26.
The new invention patent product of our company is based on the ultra-high chromium alloy plate hammer, and the ceramic alloy particles are inlaid in the striking part, and the ceramic hardness reaches more than HRC70, which more than doubles the wear resistance of the product on the original basis, and is widely used in sand making and river pebbles, granite and other crushing conditions with high silicon content and very fast wear and tear consumption.
How it works
The impact crusher uses high-speed impact action to crush materials. When the material enters the action zone of the hammer from the inlet and receives the first crushing by the high-speed impact of the hammer, the strong impact force throws the material to the impact plate and crushes again, and the material that bounces back by the impact plate falls to the action area of the hammer and continues to repeat the above process until the material is broken to less than the size of the discharge port, and is discharged from the discharge port due to its own weight.
Situation on the spot
The crushing raw material is limestone CaCO3, with a hardness of more than 120Mpa. The rough stone is mined by open-pit blasting, with a particle size of less than 800mm and a mud content of more than 10%. The raw materials after blasting are transported to the feeding platform by double-axle transport vehicles, and the loading capacity of each vehicle is about 25 square meters.
The transport vehicle transports the blasted raw materials from the feeding table, which is poured into the silo. It is fed into the jaw crusher PEV950X1250 ZSW1860 feeder by the feeder for crushing, and the jaw crusher discharge is controlled within 250mm. After the initial breaking, the semi-finished material is entered into the intermediate silo by the conveyor belt for stacking, and has been prepared for processing.
The feeder uses a grate design, through the grate in the second half of the feeder, the stone and soil less than 200mm in the raw materials are separated, and the conveyor belt is input to a 2YK2170 for powder screening to separate the soil and gravel. The sorted gravel is fed into the intermediate silo for stacking, and the soil part is treated as roadbed material or waste.
According to the site situation, the design reserve of the intermediate silo is about 1000 square meters, and a ZZG2020 vibrating feeder is designed at the bottom of the intermediate silo. The crushed semi-finished raw materials are fed into a large impact crusher PF1520 by a conveyor belt through the feeder for crushing. The crushed stone is input into the vibrating screen 3YK3075 by the conveyor belt for finished product screening. The finished products after screening are stacked separately by the conveyor belt according to different specifications.
