Cement is a hydraulic binding material. After cement and water are mixed, through a series of physical and chemical actions, the plastic slurry becomes a hard rock. As far as the hardening conditions are concerned, the cement can harden not only in the air, but also better harden in water, maintain and continue develop its strength. Therefore, cement materials can be used in both ground engineering and underground engineering. The cements commonly used in roads and bridges include: Portland cement, ordinary Portland cement, slag Portland cement, pozzolanic ash Portland cement, fly ash Portland cement and composite cement. In addition, in some special projects, high alumina cement, expansive cement, rapid hardening cement, etc. are also used, and Portland cement and ordinary Portland cement are still used in engineering construction.

The wide use of cement has increased the demand for cement production and has high requirements for cement technology. Adding an impact crusher to the cement grinding process has been widely used in modern cement enterprises. Its technological process mainly adopts the material sieve dust removal and crushing system, and its technological process mainly includes: clinker, slag and gypsum enter the sieve together, and the sieve is vibrated by the eccentric block of the motor, and the material less than 6mm enters the sieve. Cement vertical mill, materials larger than 6mm all enter the impact crusher.

In order to avoid the on-site problems of the impact crusher and affect the normal production of the cement vertical mill, a bypass pipe, a slide screen switch, and an electric limit control are adopted. Once there is a problem with the crusher, open the slide screen immediately to let the material enter the bypass, and at the same time overhaul the impact crusher to ensure the normal operation of the cement vertical mill. Matters needing attention in the production process of impact crusher. When the impact crusher is working, it is required to open all the rod valves to make the feeding port the largest so that all the working surfaces of the rollers are evenly stressed; when feeding through the bypass, it is required to close all the rod valves, and special attention should be paid to prevent crushing When the machine is not working normally, the material enters the roller chamber of the crusher; stop the crusher after all the materials are crushed, otherwise the crusher cannot be started normally.

The application of the impact crusher, to a certain extent, guarantees the operation of the vertical mill, improves the cement process requirements more perfectly, increases the cement output, and satisfies the needs of different customers to a greater extent.