General introduction
The Atairac sand production line integrates feeding, crushing, screening, and conveying devices into one unit, which enables the raw material manager to operate in an assembly line and eventually become sand or stone with different particle sizes. The entire process flow of the stone production line is fully automated, and no manual operation is required except for starting and shutting down, and the production efficiency is higher. The processing capacity is large, the crushed product is cube-shaped, the pin-shaped content is low, there are no internal cracks, and the compressive strength is high.
There are two types of machine sand systems: dry and wet. Here we introduce the wet sand system.
Features
- good-shape granularity
- Consecutive grade of granularity
- Controllable stone powder content
- Reduced dust emission, low noise and small vibration
Application site:
- Sandmaking plant + Sand washer + Fine sand recycling system
2. Crushing plant + Sandmaking plant + Fine sand recycling system + Sewage recycling system
3. Sandmaking plant + Fine sand recycling system + Sewage recycling system
Crushing stage
At present, the two kinds of crushing methods with wide application scope are impact crushing and vertical impact crushing respectively. The impact crushing production mechanism has more sandy angularity, poorer grain shape but better sand gradation. The sand particles of the production mechanism are round-shaped, and the grain type is good, but the gradation has the characteristics of "more at the two ends and less at the middle". Combining the characteristics of the two types of crushing methods, using a combination of impact and vertical impact crushing methods to obtain grain type, better graded sand.
Screening stage
Another important factor controlling the grading of machine sand products is the sieving link. The shape and size of the screen holes of the vibrating screen and the inclination of the screen surface are the key parameters that affect the quality of machine sand. Stone powder particles, and high grading requirements, generally use square square hole sieve, rectangular and circular sieve should not be used. In order to achieve a good screening effect and throughput of the material, according to the experience of shaker manufacturers, it is advisable to control the inclination of the screen surface at about 20 degrees.
The mesh size of the vibrating screen directly affects the fineness modulus, gradation and stone powder content of the machined sand. The larger the sieve hole size, the larger the fineness modulus of the machined sand. The particle content above 2.36 in the gradation also increases. According to the experimental results, the actual size of the sieve hole is controlled between 3.5 and 4.5. The particle gradation, stone powder content and fineness modulus can meet the production requirements. In the actual production process of Xinfu high-speed machine sand, the screen size of the vibrating screen is 3.8rnm. After sieving, the content of the obtained machine sand gradation above 2.36 is between 13.6% and 14.8%. The particle size gradation of the machined sand is reasonable and can meet the needs of practical engineering.
Sand washing and recycling process:
XH series fine sand recycling device is designed and manufactured by our company based on the international advanced technology and domestic processing technology. It is widely used to recycle fine sand(<0. 16mm)which has been washed away in wet type sandstone aggregate processing system to decrease the sand loss By adding appropriate amount of recycled fine sand, finished sand grading can be adjusted to get the required fineness module. Therefore, to improve sand quality and economic return, meanwhile, the reduced emission of fine sand also avoid causing the secondary disaster to the environment. XH series fine sand recycling device consists of motor, slurry pump, hydro-cyclone, ZSD linear vibrating screen, rinse tank and material return box, etc.
ATAIRAC Wet type sand making plant
1.Sand Making Plant Popular Solutions:
1.1:Jaw Crusher-Cone Crusher-Vibration Screen-Sand Making machine- Vibrating Screen (Dry Type Normal Sand Production Plant)
1.2:Jaw Crusher-Cone Crusher-Vibration Screen-Sand Making machine- Vibrating Screen-Sand Washing Machine (Economic Wet Type High Quality Sand Production Plant)
1.3:Jaw Crusher-Cone Crusher-Vibration Screen-Sand Making machine- Vibrating Screen-Sand Washing Machine-Fine Sand Washing System -Sewage treatment System( Environmentally friendly Wet Type High Quality Sand Production Plant)
Selection principle
(1) Improve the reliability of the long-term operation of the sand and gravel system. The key equipment adopts new technologies, reliable quality and Dahua heavy machinery products with large single machine production capacity.
(2) Equipment production capacity, product particle size meets process and quality requirements, and can adapt to changes in concrete gradation.
(3) Use equipment of the same specifications and models as much as possible to simplify the size and facilitate maintenance.
(4) Try to replace the product with proper operation, reliable work, reasonable cost performance, feasible and low consumption, and reduce production and operation.
Difference between dry sandmaking and wet sandmaking
At present, the commonly used artificial sand making methods can be divided into two types: dry sand making and wet sand making. The dry sand making process starts later than the wet process. The dry sand making process is further promoted on the basis of the wet sand making process. The wet production process is suitable for areas with abundant rainwater resources in the south. In the south, the temperature is high, the rainfall is high, the amount of red soil contained in the sand and gravel raw material is high, and the weathering degree is relatively high. Compared with the sand and gravel in the northern region, the same material has less hardness, and it is easy to be processed into fine powder, which is wrapped on the surface of sand and aggregate. , Affecting the quality of sand and aggregate.
Dry sand making process: 1) can use large size crushed stones below 40mm as raw materials; 2)crushed by large ultra-fine sand making machine, easy to control the generation of stone powder; 3) using air separation equipment, no need for spiral stone washing machine and other equipment; 40 The initial investment cost is small; 5) Easy to operate and manage, and the operating cost is cheap; 6)It can process high-quality artificial sand that is similar to wet production. The raw material contains mud which is not easy to handle, which affects the quality of the finished sand; The sand making raw material requires drying.
Wet sand making process: 1) Generally use crushed stones below 25mm as raw materials; 2) Because all are crushed with a stone washing machine, excessive stone powder is generated, and water is easy to lose; 3) A large amount of sewage is generated, and large sewage treatment equipment is required; 40 Medicine is required And other additives; 5) high initial investment costs; 6) high operating costs; 7) can produce artificial sand of good quality.
Advantages of wet sand making process
1) The surface of the produced aggregate and sand is clean, with good perception and good quality;
- Use a large amount of water to wash, the production environment is not polluted by dust.
- It can produce high-quality artificial sand, suitable for sites with abundant water resources and high environmental requirements
Disadvantages of wet sand making process
1) During the production process, a large amount of water resources are consumed. Generally, 1 ton of sand and gravel production requires 2 to 3.5 m³;
2) The artificial sand produced has a high water content, less particles with a particle size of less than 0.16mm, a coarser fineness modulus, and a lower sand output;
3) There are many types of equipment, too much floor space, high operating costs, difficult operation and management, and high production cost of artificial sand;
4) Sufficient water resources are required, and normal production cannot be performed in arid and rainy areas or in cold and icy seasons.
Normal Wet sand making equipment configuration:
Wet sand making is a kind of sand making production line, its configuration includes:
Vibration feeder: It can evenly and quantitatively send the materials in the silo to the crusher, which can effectively avoid the blocking of the inlet, simple structure and convenient operation.
Jaw Crusher: Roughly crush the raw materials in the silo to meet the crushing requirements of the cone crusher, with high crushing efficiency, large output and low failure rate.
Cone Crusher: Medium and fine crushing of materials. After crushing, the sand meets the requirements of sand making and enters the sand making machine for sand production. The principle of lamination and crushing, high yield, energy saving and environmental protection.
Sand making machine: an important equipment for producing artificial sand, which can crush the material to about 30 mesh, excellent finished products, good grain shape, strong processing capacity, equipment can be used for multiple purposes, and the cost is low.
Vibrating screen: There are two layers, three layers, and four layers in the sieve layer, which can separate the different grades of materials after crushing. The screening efficiency is high, the operation is reliable, the operation and maintenance are convenient and fast.
Sand washing machine: Also known as stone washing machine, it can effectively remove impurities covering the surface of sand and gravel, with high cleanliness, few wearing parts and long service life.
FAQ
- How long is the date of delivery?
30 working days after payment of earnest money or depends on order quantity.
2. How long is the gurantee period of your machine?
We guarantee quality of the machines (excluding wearing parts) for a period of one year from the date of trial run finish under our technician's guidance.
3. What's the after sale service of your company?
We will send engineers to guide your workers to install the machine, take trial run; the buyer should prepare the materials and tools needed, and offer necessary assistance. The actual expenses incurred for accommodation, to and from travel for the engineer, and insurance, should be borne by the buy
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