Process characteristics: the whole line has the characteristics of smooth discharge, reliable operation, convenient operation, high output and energy saving.
Applicable materials: concrete aggregate, steel slag, slag, cement clinker, limestone and other materials
The construction waste recycling process uses special equipment such as construction waste crushers, vibrating screens, and vibrating feeders to crush and screen construction waste to obtain recycled aggregates, and reuse waste resources. The sorted construction waste is removed by special iron removal equipment (dry magnetic separator) to remove iron substances contained in it, and then processed into recycled sand and gravel aggregates of a certain size after being crushed by coarse crushing, medium crushing and even fine crushing equipment. , and finally applied to roadbed stones, non-burning bricks, cement admixtures and many other aspects.
According to the production process of sand and gravel, the concrete, waste bricks, stones, etc. in the construction waste are processed and processed, so as to realize the reuse of resources.
- The first stage: The sorted concrete waste is transported to the vibrating feeder, the feeder performs preliminary pre-screening, and the unnecessary waste is screened as necessary, and then evenly transported to the jaw crusher Crushing to obtain semi-finished aggregate;
- The semi-finished aggregate obtained in the first stage is sent to the vibrating screen for screening, and the waste of about 0-5mm is obtained, and the regenerated semi-finished material after screening is sent to the impact crusher for secondary crushing, and the cycle is repeated until Obtain finished recycled aggregates required by users.
Method of crushing construction waste
Because the crushing methods are different and the properties of the materials handled are also very different, in order to meet the needs of actual work, the types of crushers are various.
There are two methods of crushing construction waste: mechanical crushing and physical crushing. Mechanical crushing is the crushing of solid waste with the help of various crushing machines.
The main crushing machines are jaw crusher, mobile crusher, impact crusher and cone crusher. The basic principle of crushing construction waste is to use the strong external force generated by the crusher on the construction waste block to force the waste block to break and break into smaller blocks. According to the characteristics of the force applied to the crushed materials, the crushing methods of the materials can be divided into impact, shearing, extrusion, grinding, shredding and other categories.
Description of commonly used crushing equipment for construction waste
The crusher used in construction waste treatment can be distinguished according to its operation object or structure and working principle. According to the work object, it can be divided into the following three types.
① Coarse crusher. It is used for the first crushing of bulk materials, and the maximum material block diameter that can be processed is allowed to be more than 1m. It is mainly crushed by crushing method. The crushing ratio is not large, generally less than 6.
②In the crusher. The particle size of the processed material is usually not more than 350mm, and it is mainly crushed by crushing. Since this type of crusher usually includes fine crushing operations, the crushing is relatively large, generally 3-20, and individual can reach more than 30.
③ Fine grinder. It is used for grinding material particles with a particle size of 2 – 60mm, the product size is not more than 0.1 – 0.3mm, the smallest can be less than 0.1mm, and the crushing ratio can reach more than 1000.
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