Can construction waste be made into sand, and what procedures are required for construction waste sa

The accumulation of construction waste in China is increasing day by day, in order to better reuse construction waste, many people in the sand and gravel industry choose to use construction waste as a raw material for sand making, what is the process of construction waste used to make sand? How is it different from ordinary stone sand?

The first is crushing, crushing large concrete materials and stones, crushing to the appropriate particle size, in order to increase the uniformity of the shape of the raw materials, so as to increase the fluidity and improve the efficiency of the follow-up work. In the crushing stage, the main equipment is the crusher, the crusher includes coarse crushing and medium and fine crushing, of which the coarse crushing is often represented by the jaw crusher, and the medium and fine crushing is represented by the cone crusher and impact crusher. Each type is divided into multiple models according to the different production capacity, power and raw material particle size, and the specific equipment model configuration should be determined according to specific needs.

After crushing, it is sand making, and the crusher crushes the raw stone to the size that can enter the sand making machine, because the feed port of the sand making machine is generally below 5 cm, and more than 5 cm needs to go through the front-end crushing equipment, and then processed by a professional sand making machine can obtain rounded material and reasonable gradation of machine-made sand.

In addition, in addition to the configuration of the basic production line, environmental protection issues should also be paid special attention to, such as construction waste in the first utilization and reprocessing, try to choose the plant crushing and recycling process rather than the local recycling process, the use of stationary equipment in the closed workshop for processing, can reduce all kinds of pollution, low emissions. In addition to the selection of process, noise reduction, dust removal, sewage treatment, etc. are also environmental protection issues that need to be treated, so when configuring the production line, we must configure a reasonable and environmentally friendly production line according to our own needs. If you have any questions about the specific production line configuration of construction waste sand making, you can consult it.

Construction waste is familiar to everyone, its main components are muck, concrete blocks, gravel blocks, brick and tile blocks, asphalt blocks, etc., construction waste can be made of sand, not **.

1. After the treatment of construction waste sand making machine equipment, 85% can be used to make sand, 10% impurities, 5% scrap metal, now the most expensive sand, many places are used to make sand from construction waste, to achieve waste utilization, but the finished particle size, wear resistance, moisture content and so on should meet the national construction sand parameter standards.

2. After sand making from construction waste, it can be used as recycled aggregate, recycled inorganic mixture, recycled brick, recycled concrete, etc., and applied to construction projects, building aggregates, gardens and other fields.

3. Not only the investment prospects are good and the profits are considerable, on the other hand, the project has many policies, such as: you can enjoy the preferential land use policy for public welfare undertakings, and the garbage disposal cost compensation of 55 yuan - 140 yuan per ton (different regions, slight differences), and the water and electricity consumption is calculated at cost price ......

Is it ** to crush construction waste and make sand? 1. Construction waste has great potential for sand making

The development of infrastructure is in full swing, and the demand for sand and gravel aggregates is sharp, but the shortage of environmental protection inspectors and natural sand resources has caused the machine-made sand to skyrocket, and the supply exceeds demand. A large number of accumulation of construction waste not only pollutes the environment, but also consumes manpower and material resources to deal with it, which shows that construction waste has great potential for development, and it is used in the construction industry after crushing and making sand, which can effectively alleviate the situation of aggregate tension.

2. Sand making from construction waste is not the best

The construction waste crushing and sand making machine project has been encouraged and promoted by the state, and relevant policies have been introduced to support construction waste sand making and rational use of waste resources. In addition, many users have built a construction waste sand production line and obtained a lot of benefits, therefore, it is not valid to say that construction waste is the best.

3. Construction waste sand making has national policy subsidies

Construction waste crushing and sand making has national policy subsidies, for example, the construction waste disposal subsidy in Guangzhou can be subsidized according to the actual utilization of construction waste, and the standard is 2 yuan per ton. For the factory land that meets the subsidy conditions, it should be subsidized in combination with the production scale of the enterprise, and the standard is 3 yuan per square meter.

To sum up, construction waste crushing and sand making is not only not the best, but has great market potential. Construction waste can be made into machine-made sand aggregate after sorting, crushing, screening and sand making, alleviating the shortage of construction sand in the sand and gravel industry.

The hammer crusher can be used to crush and treat construction waste, which can be used to make stones or sand, and can process cement products, build walls, pave floors, etc.

The investment in construction solid waste sand making machine is lower than that of traditional process equipment of the same scale 35 50, and the output efficiency is higher than that of traditional process equipment of the same scale by 35 50 (taking limestone as an example: the particle size of a finished product of 5mm accounts for more than 90, and the particle size of a finished product of river pebble is 5mm or more than 80).

Construction waste can be made from sand at all.

After crushing, 85% of construction waste can be used to make sand, 10% impurities, and 5% scrap metal.

Now the most expensive sand, many places are made of sand from construction waste, turning fertilizer into treasure, and waste can be utilized.

Construction waste sand making machine, mobile construction waste sand making machine.

Construction waste can be used to produce recycled sand and gravel aggregates, and this aggregate can be used in many industries, for example, to produce concrete, mortar or to prepare building materials such as blocks, wall panels, floor tiles, etc.

Construction waste is processed by crushing, screening, iron removal, light matter separation and other processes to produce sand and gravel aggregates. In addition to the finished sand and gravel aggregate, the muck in the production process can be used for road construction, pile foundation filling, foundation foundation, etc. Scrap steel, scrap steel and other scrap metal materials can be directly reused or recycled.

In the whole production process, all resources are comprehensively utilized.

Construction waste sand making generally uses movable sand making station, because the distribution of construction waste is different, there are many types, and mobile construction waste sand making equipment can adopt a multi-machine combination mode, according to different requirements, combined with the actual situation, can be a single machine operation, can also be a multi-machine combination operation, generally configured by the sand making machine + vibrating screening equipment + conveyor belt + auxiliary dust removal and noise removal equipment.

OK. 1. Construction solid waste can be used to make sand The national level has issued a development document "Opinions" specifically for the machine-made sand and gravel industry, encouraging the use of tailings tailings, stone powder, mud powder, construction waste and other research and development of new building materials, encouraging local materials, and reducing long-distance transportation of foreign sand and gravel. Construction waste can be used for brick-making, recycled aggregate, recycled concrete, recycled mortar, recycled components, recycled water stabilized materials and other building materials products after sand making, screening, sorting and other processes, and studies have shown that through particle shaping and strengthening, the performance of recycled aggregate has been significantly improved, and the performance of high-quality recycled coarse aggregate can be comparable to that of natural gravel.

Therefore, it is not difficult to see that construction waste can indeed be used to make sand, and the finished product is widely used after machine treatment, so that it can not only solve the pollution problem, benefit mankind, but also bring huge economic benefits to itself, which can be described as a good project that kills two birds with one stone. It can be seen that construction waste is nominally garbage, but in fact it is the treasure of sand making, in addition to the construction waste sand making is a real case, Jiading District, Haishi City, let the large "construction waste" into a uniform size of building aggregates, the annual processing capacity of 1.2 million tons, the crushed sand and gravel aggregate is used for recycled blocks, etc., and the marketization rate of recycled products is more than 95%. 2. What can the sand and gravel aggregate made of construction solid waste be used for?

After professional crushing equipment to the construction waste screening, removal, iron removal, crushing, screening and other processing, the construction waste in the useful seepage flushing source into recycled aggregate, applied to: 1, the production of the corresponding strength grade of concrete, mortar or the preparation of building materials such as blocks, wall panels, floor tiles and other building materials. 2. Production of recycled bricks, blocks, wall panels, floor tiles and other building materials.

Hello, the legal hand fiber dismantling of the sand plant: 1, the industrial and commercial department verification 2, the Bureau of land and resources issued the mining license 3, the safety management bureau review and approval 4, the environmental protection bureau evaluation 5, the industrial and commercial department to deal with the business license procedures 6, go to the tax department to roll and issue the tax registration certificate Thank you for your consultation, I wish you a happy life.

Summary. Hello, construction waste disposal can be broken stone and sand permitted by law, but not in the urban area, can not cause noise pollution and environmental pollution.

Hello, construction waste disposal can be broken stone and sand permitted by law, but not in the urban area, can not cause noise pollution and environmental pollution.

Construction waste disposal can be broken stone and sand to decay, this law does not prohibit it, as long as it complies with the procedures for the disposal of construction waste. However, it generally needs to be carried out in a special place in the suburbs far away from the urban area to avoid the impact of the noise bridge car on the surrounding people. At the same time, it is also necessary to ensure that the dust generated cannot exceed the standard, and if it causes environmental pollution, it will be punished by the relevant functional departments.

At the same time, in the process of transportation, stones and sand should be transported and disposed of in strict accordance with the regulations of the local city-type shantytown people's ** city appearance and environmental sanitation department, as well as the regulations of the local transportation and lead bird urban management departments, so as to resolutely prevent pollution from polluting the environment!

Sand making from construction waste is a kind of machine-made sand.

Manufactured sand is a type of sand (sand), which mainly refers to the sand formed by crushing by machines. What is the raw material of manufactured sand? Generally speaking, as long as it is a stone of comparable hardness, it is fine.

To be precise, igneous rocks, metamorphic rocks, and aqueous rocks whose compressive strength meets the requirements are selected. When the construction area of water conservancy projects is mostly in the field, the use of machine-made sand should first consider local materials to save costs, and it is better if it can be combined with the waste slag excavated by the stone. The compressive strength of the parent rock used for processing machine-made sand should comply with the provisions of GB T14685-2001 "Pebbles and Gravel for Construction", that is, saturated compressive strength:

Igneous rocks should not be less than 80MPa, metamorphic rocks should not be less than 60MPa, and aqueous rocks should not be less than 30MPa.

Manufactured sand is relative to natural sand such as river sand. Natural sand is mainly formed by the impact of natural forces, such as river sand, sea sand, etc. However, due to environmental protection and other reasons, the cost of natural sand is getting higher and higher, and its profits are getting lower and lower, and the market is getting smaller and smaller.

Therefore, manufactured sand is becoming more and more popular in the market, and the market share is getting higher and higher!

Machine-made sand is also artificial sand, which is not naturally formed sand, and the concrete poured with this sand is machine-made sand concrete.

2. Comparison between machine-made sand and natural sand.

With the increasing reduction of natural sand and the protection of policies, the market of machine-made sand (that is, sand and gravel materials crushed by professional sand making equipment such as sand making machines and impact crushers) has shown great potential and vitality. Especially in recent years, the huge demand in the construction market has promoted the rapid development of the sand and gravel market. The machine-made sand produced by the high-efficiency sand making machine has gradually replaced the market with unique advantages and has become one of the best building materials.

1. Robustness and durability test. The sturdiness of manufactured sand is slightly worse than that of river sand, but it still meets the excellent product index of the GB T 141684293 standard, and there is no problem in the use of ordinary concrete. However, in the concrete components that are often subjected to friction impact, in addition to the admixtures, the gray-sand ratio of the concrete, the crushing index of the sand and the stone powder content should also be controlled.

2. Effect of machine-made sand and gravel powder content on the properties of cement mixture. Through the cement test, mortar test, concrete test, the preparation of concrete with machine-made sand and natural sand is not much different, generally speaking, under the premise of the same slump, the water consumption of machine-made sand should be slightly larger, but according to the construction conditions and the structure and transportation and other factors. But the strength of the concrete is basically unchanged; When using machine-made sand to prepare and pump concrete and other special concrete, pay attention to the sand rate should not be too high, so as to prevent the reduction of concrete strength and durability and other engineering quality.

3. The granularity of machine-made sand is more irregular, and when using cement and other structures for bonding, it often has better adhesion, more compressive resistance, and longer service life.

There is no big difference between the two. Machine-made sand is generally made of pebbles, basalt, and granite, which are processed by crushers and sand making machines. After the processing of construction waste by these equipment, the finished product can also meet the requirements of the particle size of machine-made sand and is used to make machine-made sand.

Machine-made sand is a general term, and the finished product of construction waste sand making is also called machine-made sand. The quality of machine-made sand mainly depends on the quality of raw materials and the quality of sand making equipment, there are many raw materials that can be used to make sand, such as common mountain stones, pebbles, limestone, construction waste, slag, etc.

There must be a difference, first of all, the sand produced by the stone through crushing, screening, and powder selection is collectively called machine-made sand. The sand made from weathered stone is also called machine-made sand, and the sand produced from construction waste is also called machine-made sand. The quality of the machine-made sand produced by ordinary stone is definitely better than that of the machine-made sand produced from construction waste.

The quality of the sand directly affects the strength of the cement.