In 2020, ＂mobile crushing station＂ will help the reuse of construction waste to become a hot spot
With the continuous acceleration of urbanization in my country, the production of construction waste continues to increase, accounting for 30% to 40% of urban waste, causing serious harm to the ecological environment. For a long time, due to the lack of unified and perfect construction waste management methods and the lack of economically feasible, scientific and effective disposal technologies, most construction wastes have been transported to the suburbs for open storage or simple landfills without any treatment. more than 20 billion tons. A lot of waste of resources has been formed. At present, in response to the needs of environmental protection, relevant departments continue to issue policy support, and the reuse of construction waste has become a hot spot in the market.
1. What are the advantages of recycling construction waste?
01. Metals such as scrap steel bars, scrap iron wires, and scrap wires can be reprocessed into various specifications of steel after being sorted, concentrated and returned to the furnace;
02. Bricks, stones, concrete and other wastes can be used as sand instead of sand after being crushed and used for masonry mortar, plastering mortar, and concrete cushioning; waste concrete blocks can be mixed with standard sand after being finely crushed to form mortar fine bones It is used for wall and floor plastering, roofing mortar leveling layer, masonry mortar, making floor tiles, etc;
03. The waste bricks are crushed and used as the aggregate of building boards to manufacture partition wall boards, which are not only light in weight and high in strength, but also in sound insulation and small in expansion coefficient. The cost of the board is greatly reduced due to the easy acquisition and cheap material ;
04. After crushing, the waste concrete blocks can be used as aggregates in cast-in-place concrete or prefabricated components for non-load-bearing parts of buildings. This not only saves construction funds, but also does not reduce the strength of structures;
05. The recycled bricks that can be produced include partition wall bricks, modular bricks, pavement bricks, permeable bricks, thermal insulation bricks, grass-planting bricks, sound barrier panels, etc. There are more than 100 types, and their performance indicators have reached or exceeded the national Related standards.
Studies have shown that every 100 million tons of construction waste can produce 24.3 billion standard bricks and 36 million tons of mixed materials, reduce soil borrowing or replace natural sand by 10 million cubic meters, save 2.7 million tons of coal, and increase the output value of 8.46 billion yuan , creating huge economic benefits.
2. Construction waste recycling "mobile crushing station" to help
Mobile crusher is a new type of crushing equipment. It adopts vehicle-mounted mobile technology to realize mobile operation. Combination of crushing, screening, feeding and other equipment is installed on the ship-shaped steel frame to form an independent production line, which can crush construction waste into With suitable particle size, it can also screen out different particle sizes to meet the various production needs of users, reuse in other industries, realize the regeneration and utilization of construction waste, and reconfigure resources.
Construction waste mobile crusher is a kind of mechanical equipment that is used for urban waste recycling and recycling. It can process construction waste, convert it into renewable resources, and reuse it. Its advent can not only solve the problem The historical problem left by the rapid development of the city - construction waste, but also can further help promote the green development of the city.
3. How much economic benefits can be produced by crushing recycled aggregates from construction waste?
The conversion rate of construction waste into aggregate can reach 85%. 1 ton of construction waste can produce 0.85 tons of recycled aggregate, 0.01 tons of scrap steel, and the rest are other wastes. The sales price of recycled aggregate is about 60% of the price of natural sand and gravel materials, which can effectively reduce the construction cost by more than 40%, and has a great advantage in cost. According to the current market price standard, it is about 30 yuan/ton.
In addition, the use of construction waste recycled aggregate can produce recycled concrete with strength below C30 (compressive strength of concrete), recycled environmentally friendly permeable bricks and blocks, and recycled dry-mixed mortar. The recycled products can not only meet the strength requirements, but also have higher water permeability. It has a high cost-effective advantage.