Ideas - Economics of Construction Waste Disposal
Most of the construction waste can be reused as a renewable resource after crushing, screening, culling, or crushing. It is mainly used for construction backfill, park soil, building recycled aggregate, road cushion aggregate, construction waste recycled brick, concrete, And some high value-added products for construction.
Southern Road Mobile Crusher
According to the economic analysis of the use of finished products after construction waste disposal, the value of construction waste for construction backfills and park-based construction wastes is almost zero, and ordinary waste used as substitutes for land reclamation and dam construction is valued at RMB 5/ton. about. After the construction waste was broken down and sieved and used as aggregate, the value of the CIF in the first-tier cities in October 17 was 50 yuan/ton.
Aggregate price (Shanghai October): 58 yuan
Other use methods Price: 3-5 yuan
Proportion: 20:1 - 12:1
Ideas - Convenience of construction waste disposal
Southern road mobile crushing and screening equipment is not very concentrated in the accumulation of construction waste, or is divided into several areas. Because of the convenience of mobile equipment, equipment can be quickly transferred to construction, reducing the large-scale fixed construction waste processing equipment The investment in the capital site will save a lot of transportation and transportation costs resulting from the loading, trans-shipment, and dumping of a large amount of construction waste, thus saving comprehensive costs. At the same time, zero-value construction waste will be broken down into basic raw materials that are in short supply on the market, and the economic value and social benefits generated by the mobile crushing station are clearly visible.
The South China Mobile crawler type mobile crushing station adopts self-driven method, advanced technology and complete functions is a high-efficiency crushing equipment. The combined equipment of the South Road mobile crushing and crushing station is based on the main process of gravel processing and has been rationally designed and realized. The integrated combination of crushing and screening equipment can achieve the function of integrated mobile operation through the track drive system. The construction site can be flexibly selected and the materials can be processed in a timely manner, which greatly reduces the transportation and processing costs of materials and improves production efficiency.
Thinking! South Roads Mobile Crushing Station - Application of White-to-Black Project
The southern road machine NFI1111 crawler mobile counterattack crusher was applied in the municipal road white to black project. Due to the long service life of the local cement road surface and the dense traffic flow, heavy road vehicles were rolled back and rolled, causing severe road damage and affecting the appearance of the city.
Southern Road Mobile Crusher
The traditional construction method is to use a hydraulic excavator with a hydraulic hammer to break the old concrete pavement into concrete blocks of different sizes, transport it out of the construction site with a dump truck and discard it or landfill it, and then clean up the roadbed, and then purchase new aggregates for laying. Roadbed and road surface. The equipment builder of this project used the southern road machine NFI1111 crawler impact crusher to crush the abandoned concrete blocks removed from the crusher at the site. The mixture after crushing directly serves as a cushion for the road surface, shortening the construction period quickly, greatly saving the cost of renovation of the concrete surface, realizing waste utilization, saving time and environmental protection.
Thinking! South Road Mobile Crushing Station - Application of Waste Stone Recycling
NFI1111RS tracked mobile counterattack broken with NFS350+ tracked mobile tilt screen. This group of equipment is currently being used at a site in an airport in southwestern China to recycle waste stones generated during the development of real estate. The stone is primary crushed and sieved by NFI1111RS. The ultra-grit material larger than 31.5mm is returned to the crusher by the return system and then broken. The material less than 31.5mm is transported by the main belt conveyor into the NFS350+ for fine grading, and the sifting is 0- 5mm, 5-10mm, 10-20mm and 20-31.5mm four types of building aggregates.
Southern Road Mobile Crusher
Aggregate size
As the construction site is close to the airport and under construction of aircraft takeoff and landing routes, the environmental protection requirements of the equipment are extremely demanding, while the southern road machine equipment meets such high environmental protection requirements. The NFI1111RS crawler counterattack is broken with multiple atomized spray dust collectors. The device ensures dust removal. Because of the dust falling from the spray, the moisture content of the material increases. The self-cleaning screen of the lower screen of the NFS350+ crawler-moving inclined screen machine acts as an anti-blocking material and ensures the efficient and stable production of the equipment.
Thinking! South Road Mobile Crushing Station - Application of Construction Waste Treatment in Urban Village Reconstruction
The installation mode of the mobile crushing and screening equipment integrated unit avoids the complicated site infrastructure construction and installation operations, reduces the installation cost and saves man-hours. After the mobile screening crushing equipment screening equipment site is in place, it can be turned on and put into production. . The NFI1313 tracked mobile impact crusher was put into production immediately after arriving at a construction site in North China from the beginning of the month. It mainly dealt with construction waste consisting mainly of brick and concrete after demolition and produced aggregates below 70mm.
Southern Road Mobile Crusher
Raw materials and finished products
The disposal of construction waste on-site at the demolition site saves the transfer costs of construction waste. After processing and classifying the construction waste, it turns waste into treasure, improves the utilization of resources, beautifies the environment, and reduces the environmental damage caused by construction waste. At the same time, it brings good economic benefits to customers. The average construction waste per ton can recover 1 kg of waste steel bars, the selling price of waste steel bars is 1.2 yuan per kilogram, 350 tons of construction waste is broken according to the equipment every hour, and it is calculated every day for 10 hours. A single customer who recycles waste steel bars has 4200 yuan per day ( 350x10x1.2) revenue, this income basically outweighs all operating costs of the equipment. The produced finished mixture of 70mm or less is mainly used for the cushion of the water stable layer during road construction. The selling price per ton of finished material is about 20 yuan (excluding freight), and the profit per ton is about 17 yuan, if the annual processing The amount of 500,000 tons, a year's profit of 850 million.
According to the customer's report, the same amount of construction waste was removed and transported, and the broken construction waste was higher than the un-crushed construction waste. The cost of comprehensive transportation can be reduced by 40%. Such as: the same amount, the previous customer's total cost of removal of 4 million each year, now only 2.4 million, can save 1.6 million for the customer's expenses.
Thinking! South Road Mobile Crushing Station - Application of Building Waste Treatment in the Demolition of a Factory Building
The southern road mobile crushing and screening equipment adopts an integrated unit installation mode, eliminating the installation of complex site infrastructure and reducing the material and man-hours consumed. The crawler mobile crushing and screening equipment facilitates the driving of rough roads in the crushing plant area and saves time in the construction site. It is ready to enter the crushing area at any time, providing more flexible space and reasonable layout for the overall crushing process.
The coarse crushing mobile crushing station directly performs on-site crushing of materials, which eliminates the intermediate links where the materials are removed from the site and is broken again, which greatly reduces the transportation costs of the materials. The integrated mobile crushing station can be used independently, and can also provide more flexible process configuration to meet customers' requirements for material types and product requirements in the process. It can meet various requirements such as mobile crushing, mobile screening and other requirements, making logistics transshipment more direct. Effectively, the cost is reduced to a maximum.
The customer's existing Southern road machine equipment includes crawler moving jaw crushing station NFJ1175, crawler mobile cone crushing station NFC1000, crawler moving heavy duty peeling and screening machine NFS550, tracked mobile double-sieving sieving machine NFS330. From the front end peeling screening, crushing to the product grading a complete set of production process.
At present, these equipments serve the demolition and reconstruction of an old large-scale factory building in the area, and are mainly used for the recycling and crushing of the foundation of the plant. The broken materials are used for concrete and water stabilization. Among them, the NFS550 heavy-duty screening machine was used as a stripping screen for the crushing front. It stripped the higher soil (more than 20% of mud content) from the raw material, and the stripping screening capacity exceeded 400 tons/hour.
The stripped material from the NFS550 heavy-duty screening machine in turn enters the NFJ1175 crawler moving smasher and the NFC1000 crawler moving conical breaker. The iron remover located on NFJ1175 removes the reinforcing bar from the raw material and deposits it on the side of the equipment. The NFS330 crawler mobile screening machine is equipped with two screens (13mm and 5mm) and screens out 0-5mm, 5-13mm, and +13mm finished products. The entire production line has a capacity of 200 tons per hour (based on the stock density of 1.6t/m3).
Due to the stable operation of the southern road machine equipment on site, the low price and easy availability of raw material sources, coupled with policy support, subsidies, and a higher selling price of finished products (over RMB 70/ton), this brings great return to the customer. .
New Ideas - Future Prospects for Building Waste Recycled Aggregates
The use of construction waste has undergone great changes in the past half century. From pure landfill dumping to partial recycling for construction backfill, park building, and sea reclamation, it is now used as a building aggregate for processing. It can be said that the recycling rate of construction waste is getting higher and higher, and the added value of its reprocessed products is also getting higher and higher. In summary, the construction waste reserve is abundant, the production speed is quick at this stage, the cost is low, and the transportation is convenient. It can also reduce the waste of resources, reduce the environmental damage, and replace part of the traditional mines. These advantages make construction waste making aggregates have a unique advantage. (This article comes from South Roads)