The speed of urbanization is accelerating.，Construction waste production is increasing day by day，Aggravated urban land、A situation of resource constraints，It has seriously affected the coordinated development of social economy and ecological environment.。Construction waste can no longer be satisfied with landfill and stacking.，But should be proces into recycled road material.、Recycled wall materials、Recycled concrete aggregates and other different types of recycled products，Realization“Gorgeous transformation”。

From the construction site to the factory building is no longer“Rubbish”

In the past few decades,，The final destination of construction waste is open-air stacking or landfill.。But with the passage of time,，Land occupied by construction wastes、The problem of environmental pollution has become increasingly prominent.。And，Construction waste is not completely useless waste.，Its concrete blocks、Mountain Rocks、Brick、Reinforcement, etc，All can be reused after recycling.。

Instead of transporting construction waste from the construction site to the landfill for waste,，It is better to transport it to the construction waste treatment plant for recycling.。Generally speaking，Construction waste will be mixed with some domestic waste and other impurities.，The overall solution of the whole industry chain of construction waste recycling of Nanfang Road Machinery aims at this characteristic.，Multistage crushing is adopted、Screening、Impurity removal and other processes，Purify the aggregate，Make it meet the quality standards of back-end applications。

  

At the same time，In order to ensure that production does not affect the surrounding residents，Spray cleaning system is used as the overall solution of the whole industry chain of construction waste recycling of Nanfang Road Machinery.、Off-line ash cleaning pulse dust removal system、Silencing and noise reduction system and other environmental protection design，The concentration of dust particles in the production line does not exceed 10mg/m³，Noise not exceeding 55 decibels。

As long as each process is strictly implemented.，High-quality recycled aggregates with different particle sizes can be obtained.。

From Feeding to Discharging, Reshape and Get a New Life

The excavator pours the construction waste into the vibrating feeder，Conveying to crusher for coarse crushing。And then，Construction waste mixture passing through iron remover、Positive-pressure light substance separation equipment、Removal of reinforcement in manual picking table link、Plastic、Wood chips、Paper and other impurities。

In order to ensure that the impurity content of the finished aggregate is less than 1%，Nanfang Road Machinery Construction Waste Whole Industry Chain Overall Solution，The material screening system is set into three blocks according to the aggregate size required by most of the project.，And for greater than 5mmAggregate is subject to negative pressure impurity removal，The aggregate is further purified。At the same time for more than 25mmThe material is returned to the counterattack.，Become a high-quality recycled aggregate in repeated rotary beating.。

Aggregates of different sizes are used for different purposes.，The recycled aggregates enter the finished product storehouse respectively according to different grain sizes，The subsequent application shall be adjusted according to the proportion。

  

Transformation from factory building to construction site“A hot commodity”

In major construction projects，Sandstone is one of the indispensable materials.。Whether it is the paving of pavement base、Preparation of dry-mixed mortar，Or concrete and brick production?，Sand and stone aggregates are indispensable to play the role of skeleton and filling.。However, natural sandstone resources are limited.，Over-exploitation will bring ecological risks.。Recycled aggregate can be used in different fields instead of sand and stone on the premise of meeting technical standards.。

Most of the recycled aggregate can be directly used for the base course of permeable pavement.、Subbase course and leveling course, etc.。Recycled aggregate of construction waste with good water absorption、Reclaimed graded soil and organic soil can be applied to the reconstruction of micro-topography in the park.、Pile mountains to create scenery、Reclaimed soil, etc，Better serve“Urban Green Lung”Construction。

The brick and tile graded recycled aggregate can be directly used for the paving of the bottom cushion of some lake landscapes.，Achieve water absorption and seepage，Avoid differential settlement caused by foundation bearing and water absorption。Can also be use for processing water-stable mix material，The produced reclaimed water stabilizing material can be used for high-grade highways.、Urban roads、Square、Construction of stabilized soil for airport base course。

In addition，Recycled aggregate can be used in the production of commercial concrete，Recycled concrete can be widely used in most non-structural load-bearing projects.，For example：Roadbed、Pavement, etc；Recycled fine aggregate can also be used to prepare recycled mortar，Such as plastering mortar、Non-bearing masonry mortar and road base material。

With the disposal of construction waste as a resource, it has become the consensus of decision-makers.，Local policies on construction waste disposal have been issued frequently.。Since no one has been interested，To be hot，Construction waste recycling industry is becoming more and more standardized，It also has more and more bright development prospects.。