sand and aggregate production system using dry method

The sand and gravel aggregate production system integrates a number of advanced technologies, including sand shaping, particle optimization, stone powder control, grading adjustment and moisture content regulation, etc., which can not only provide high-quality sand and gravel aggregates, but also efficiently deal with stone powder, in line with the national standards for construction.
Sand and gravel aggregate production system can not only produce mechanism sand and crushed stone with excellent grain shape and reasonable grading, but also has the function of stone powder recycling, which is environmentally friendly and highly automated.

Characteristics of sand and gravel aggregate production system:

1. full and rounded sand grains: through the high-frequency “stone” impact shaping, rapid grinding and waterfall grinding brush three optimization process, sand grains show a full, rounded shape, more uniform particle size, particle size distribution is more reasonable. The proportion of 0.15mm to 0.6mm particles of fine sand is greatly increased, the proportion of 2.36mm to 4.75mm particles of coarse sand is decreased, and the powder content can be adjusted between 3% and 15%, which meets the different needs of construction.
2. high adjustable efficiency: adopting integrated screening system, integrated vibrating screen, material separation and air powder selection function. Users can flexibly adjust the grade and stone powder content of the finished sand by adjusting the negative pressure and distributor settings without replacing the screen, and the screening efficiency is high to ensure precise control of the production process.
3. excellent environmental performance: the system is equipped with negative pressure dust collector to ensure that the entire production process without dust. At the same time, the closed operating environment reduces dust leakage, dry production process avoids the generation of sewage and sludge, all environmental indicators are in line with national standards to ensure that the production process is green and environmentally friendly.
4. high degree of automation: the system is equipped with advanced electronic control system, real-time online monitoring and adjustment of equipment operation status. The system is equipped with one-key start-stop, abnormal alarm, emergency shutdown and other functions, which can automatically optimize the operating parameters to ensure stable production and effective control of the quality of the finished sand.

The working principle of sand and gravel aggregate production system:

Sand and gravel aggregate production system adopts dry process, and the whole process consists of several sub-systems, including feeding and conveying system, sand shaping and screening system, dust removal system, stone powder storage system and electrical control system.

1. Feeding system: Raw materials are sent to the top floor through bucket elevator, and then the gravel from 0mm to 40mm is sent to the impact breaker through conveying belt. Inside the impact crusher, the raw materials are optimized by high-frequency impact and grinding of stone hitting stone.
2. stone powder control and separation: after grinding the material into the stone powder separation room, the system by adjusting the air inlet and air volume of the powder control box to accurately control the content of stone powder. The stone powder is processed by dust removal system and collected to become high value-added fine stone powder.
3. Screening and sorting: The processed material enters the sorting screen, and the fine gravel, stone powder and quasi-finished sand are selected through the screening. The quasi-finished sand is evenly mixed by humidifying mixer to form standardized mechanism sand.
4. Environmental protection and waste gas treatment: the dust removal facilities in the system effectively collect dust, and the whole production process realizes zero pollution emission, which meets the requirements of environmental protection regulations.

Advantages of sand and gravel aggregate production system:

1. Efficient production: Adopting advanced impact crushing and screening technology, it can improve production efficiency and ensure product quality.
2. energy saving and environmental protection: fully enclosed design and negative pressure dust removal system, reducing energy consumption and environmental pollution.
3. flexible adjustment: according to the demand to adjust the sand and gravel particle size, powder content and grading, to adapt to the needs of different projects.
4. fully automated operation: highly automated control system, simplify the operation process, reduce labor costs and improve production stability.

Application areas of sand and gravel aggregate production system:

1. Construction industry: It can be used to produce coarse and fine aggregates (such as mechanism sand and gravel) for construction in accordance with national standards, and is widely used in concrete mixing stations, prefabricated components production and other fields.
2. Cement industry: the system can provide high-quality sand and gravel aggregates to meet the high standard requirements of cement enterprises for aggregates, and improve the strength and stability of the products.
3. Road construction: Provide various kinds of aggregates suitable for road construction to ensure the solidity and durability of road infrastructure.
4. Mining, sand and gravel quarry: It is suitable for upgrading of mines and sand and gravel quarries, improving production efficiency and aggregate quality, and increasing the recycling of stone powder.
5. environmental protection industry: dry production process avoids the problem of water pollution, suitable for areas with high environmental standards.
6. Applicable materials: It is suitable for ores, rocks and other raw materials with particle size less than 40mm and water content less than 2%.