With the promulgation of environmental protection policies and the implementation of sustainable development strategies, construction waste that was piled up and land filled in the past has been turned into treasure. Construction waste recycling and reuse projects have become a state-supported industry with broad prospects. Recycling and processing waste materials such as concrete and bricks with useful value in construction waste fully solves the problems of waste land occupation and stacking pollution, and at the same time reflects the environmental protection value and economic value of these waste materials through reuse. In recent years, there have been more and more applications of mobile crushing stations in the newly put into production of aggregate crushing projects and construction waste crushing treatment projects. Fixed crushing production lines and mobile crushing stations have their own advantages, but who can be better?
Fixed construction waste crushing station
As far as the current technological level is concerned, the technological process of processing construction waste mainly includes several key links such as pretreatment, crushing, screening and dust removal, and water washing.
1. Pretreatment generally uses iron remover to absorb steel bars, iron wires, nails, and manual picking of non-metallic materials such as rags, wood strips, and paper to prevent damage to the conveyor belt.
2. The material after the crushing pretreatment can generally be crushed. According to the process requirements, configure one crushing or two crushing. The feed is transported to the jaw crusher for primary crushing, and then transported to the impact crusher or cone crusher for secondary crushing, and then screened by a vibrating screen. Those that meet the standards will go to the next step, and those that do not meet the standards will be transported again to the mouth of the crusher, crush again, thus forming a closed loop.
3. Screening and dust removal Install fan ducts in crushers, vibrating screens and other places where dust is generated. The dust is drawn into a closed air duct by the fan, and a spray nozzle is installed to atomize the spray to clean the dust. It has been sprayed many times and completely removed, creating a green and environmentally friendly production plant area.
4. After being crushed and sieved, the washed materials will be cleaned by a wheel sand washer or a spiral sand washer. The coarse materials are discharged from the bottom by the screw rod, and the rest settle into fine materials in the sedimentation tank through overflow. Mud and organic matter have accurate levels and clear boundaries, forming sand and gravel aggregates of different specifications for use in different recycled aggregate plants.
Mobile construction waste crusher
The main difference between the mobile crusher and the fixed crushing production line is that the mobile crusher integrates all the equipment and is more systematic. According to the environmental conditions of the factory, the tire or crawler drive can be selected, which has significant effects and obvious advantages.
1. Unit integration. The set performance is strong, the combination is reasonable and compact, and the requirements for the work site are extremely low.
2. Strong maneuverability. The whole vehicle has a compact structure, a small turning radius, low requirements for road transportation and installation conditions, and convenient and quick conversion, entry and exit.
3. Energy saving and high efficiency. It can directly enter the raw material site for work, reducing the transportation of raw materials, thereby saving raw material transportation costs.
4. Various configurations. According to the different requirements of customers, provide a variety of personalized unit configurations. It can be operated in a single machine or in a combined operation of multiple units, so as to realize a combination of functions such as single-unit crushing, multi-unit combined grading crushing and screening.
5. Oil and electricity dual use. It can be equipped with a generator set to meet the normal operation requirements of complex situations such as no electricity or power failure, and continuous operation.
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