Long heavy product center
1. It consists of motor, slurry pump, linear vibrating screen, cleaning tank and return box.
2. It can effectively reduce the loss of fine particle materials, and solve the problems of high fineness modulus and low stone powder content in the finished product.
3. 95% of the total recyclable emissions materials have unparalleled technology and advantages of other equipment.
From the perspective of large and medium-sized stone plants, sand washing plants, and artificial sand production lines at home and abroad, more than 90% are wet production lines. Generally, silos → feeders → crushers (first or second and third level crushing equipment) → Washing equipment (spiral sand washer or impeller sand washer) → Screening equipment → Finished material. As the name implies, the wet production line uses water-washed aggregates, so it is impossible to avoid losing a part of the finished sand from the sand washer, especially the fine sand below 0.16-0.2mm . The loss is serious, and the loss rate is as high as 20% or more. The consequences have the following aspects:
1. The loss of fine sand below 0.2mm affects the grading of sand, resulting in irrational grading and irrational fineness modulus, which greatly reduces the product quality of machined sand;
2. Excessive fine sand and sludge enter the sedimentation tank, causing sedimentation in the sedimentation tank, which not only pollutes the environment, but also costs a lot to clean the sedimentation tank frequently;
3. The loss of a large amount of fine sand greatly reduces the profit of customers.
In order to solve the above problems, our company successfully developed the LZ series fine sand recovery machine, which is a comprehensive advanced technology in Longzhong, combined with the actual situation of sand powder, and has an advanced level of fine material extraction device. It is widely used in hydropower station sand and gravel. Aggregate processing system, glass raw material processing system, artificial sand production line, recovery of coarse slime from coal preparation plant and environmental protection engineering (mud purification) can effectively solve the problem of fine sand recovery.
The LZ series fine sand recycling machine has a reasonable design and is easy to use. It mainly includes the following structural components: a motor, a vacuum high pressure pump, a sediment separator, a TS dewatering screen, a cleaning tank, and a return box.
Working process: The pump slurry, sand and water mixture is sent to the high pressure separator of mud and sand. The fine sand concentrated by centrifugation and classification is provided to the dewatering screen through the settling nozzle. After dewatering through the dewatering screen, the fine sand and water are effectively separated, and a small amount of fine sand and mud are returned The bin returns to the cleaning tank. When the liquid level of the cleaning tank is too high, it is discharged through the discharge port. The weight concentration of the recovered material in the dewatering screen is 70% -85% . Adjusting the fineness modulus can be achieved by changing the pump speed, changing the mortar concentration, adjusting the overflow water amount, and replacing the mortar nozzle. In order to complete the three functions of washing, dehydration and classification.
1 , polyurethane screen
Its self-cleaning performance, non-blocking holes, high screening efficiency and long service life. Due to the use of steel wire rope as the skeleton material for the polyurethane elastic screen, plus the polyurethane itself has a very high elastic modulus, high strength to absorb impact, and high resistance. Grinding, so it has a high tensile strength, and its carrying capacity is more than 2.5 times that of rubber screens . Its service life is 8-10 times longer than that of ordinary metal screens , 3 times that of stainless steel screens , and 3.9 times that of natural rubber , which is currently. Screen material with the best abrasion resistance.
2. Sediment separator
High abrasion-resistant raw materials, high elasticity, high strength, high abrasion resistance, tear resistance, cutting and other characteristics of the sediment separator. Its separation principle is centrifugal sedimentation. When the slurry to be separated enters the sand separator from the periphery of the sand separator under a certain pressure, it is forced to perform a rotary motion. Due to the different centrifugal force, centripetal buoyancy, fluid drag force, etc., the solid coarse particles in the slurry move against the hydraulic resistance and move toward the wall, and together with their own gravity, they move downward spirally along the wall. The small particles and most of the water, due to the small centrifugal force, do not move close to the wall of the device to perform rotary motion with the slurry.
3.Vacuum high pressure pump
Adopting the latest vacuum high pressure pump, the power is reduced, the seal is efficient, and the slurry is not easy to leak. The vacuum high-pressure pump is a wear-resistant, energy-efficient vacuum high-pressure pump. Adopting design theory and designing according to the principle of reducing losses, the shape of the flow parts and the flow state of the slurry have reached the ideal state.
4.Efficient compound spring
Rubber spring helical compound springs have the characteristics of non-linearity and structural damping of rubber springs, and the characteristics of large deformation and load-bearing capacity of metal springs. Their stability and load-bearing capacity are due to rubber springs.
Separator specifications (mm)
Capacity (m3 / h)
2 × 0.55
2 × 0.75
2 × 0.75
2 × 1.1
2 × 1.1
2 × 1.5
2 × 2.2
2 × 2.2
Economic Benefit Analysis
The content of fine sand in the waste water of the spiral sand washing machine or the wheel sand washing machine is about 6% ( 6 tons / hour). After the fine sand recycling machine is processed, the fine powder content in the waste water discharged by the fine sand recycling machine is less than 1% , the fine sand recovery rate is as high as 80% ( 6 tons / hour × 85% = 5 tons / hour).
The production line is calculated based on 8 hours of work each day: 5 tons / hour × 8 hours = 40 tons / day;
One year according to 260 days of work technology: 40 tons / day × 260 days = 10400 tons / year;
The finished sand is calculated at 25 yuan / ton: 10400 tons × 25 yuan / ton = 260 thousand;
The cost of running and maintaining the equipment to go out is about 50,000 yuan / year, which adds 210,000 income a year .
In order to reduce the dust generated during the production process, a stone factory uses two water pumps to supply water to the vibrating screen. The total water volume is 100-150 tons / hour, which is 3-4 times that of other production lines with the same configuration . Therefore, the fine sand content of wastewater in a normal wet screening production line is about 15-20% .
Assume that the production line of the sand and stone plant is 100 tons / hour and wet screening, then the fine sand content in the waste water discharged by the sand washing machine is 100 tons / hour × 15% = 15 tons of hours. After being processed by the fine sand recovery machine, Fine sand can be recovered: 15 tons / hour × 83% = 12.45 tons / hour × 25 yuan / ton = 647,400 yuan, out of equipment operation and maintenance costs of about 100,000 yuan / year, a year can be 650,000 to 100,000 = 550,000 yuan in revenue. At the same time, fine sand is fully recovered, reducing the workload of the sedimentation tank and reducing the cleaning cost of the sedimentation tank!
Longzhong fine sand recovery machine ** can recover 85% of the fine-grained materials in the total discharge of sand-water mixture , which has obvious economic advantages.
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