Tailing sludge dehydrator

1.

The working principle of the dehydrator is centrifugal movement, that is, the inner tank is driven by the motor to rotate at high speed, and the water in the stripped material is driven to rotate at high speed to make centrifugal movement, and the water splashes out of the inner tank in the eyes around the inner tank to achieve the purpose of dehydration

structure of the machine

the dehydrator (dryer) is a three foot swing type, which can avoid the vibration of the foundation ring operation e to the imbalance in the drum. The shell and top cover are made of steel plate, the chassis is made of cast iron, the outlet pipe is under the chassis, and the base and column base are made of cast iron

the spindle is made of high-quality steel, equipped with multiple bearings, and the lower end is supported by thrust ball bearings, so as to rece wear and save power. The drum is made of stainless steel plate button hole, the cage base is cast iron, and lined with stainless steel cover. The drum is installed on the cone of the upper end of the spindle to ensure smooth operation

the dehydrator is driven by independent motor and triangle belt. The large-scale dehydrator is equipped with centrifugal starting flange, which can make the machine start slowly. Its braking efficiency is high, which can make the drum stop rotating quickly, and avoid the main shaft suffering torque e to braking

extended data:

construction principle

the main body of the screw stacking of the dehydrator is a filter device formed by a fixed ring and a floating ring, and a spiral shaft running through it. The front section is the concentration section, and the rear section is the dehydration section. The filter gap formed between the fixed ring and the moving ring and the pitch of the screw shaft graally decrease from the concentration section to the dehydration section

the rotation of the screw shaft not only drives the sludge to be transported from the thickening section to the dewatering section, but also continuously drives the floating ring to clean the filter seam to prevent blockage. After gravity concentration in the thickening section, the sludge is transported to the dewatering section. In the process of moving forward, with the graal rection of the filter gap and screw pitch and the blocking effect of the back pressure plate, the maximum internal pressure is generated, and the volume is continuously reced, so as to achieve the purpose of full dewatering

2. I think you can choose centrifugal dehydrator, plate frame machine or screw folding machine. The model depends on the daily processing capacity. The price is also related to the processing capacity. Only by determining the model can you get the price. The price of different types of machines also varies a lot

3.

A large amount of slurry wastewater is proced in the mine washing operation, which makes people complain incessantly. The local environmental protection departments pay more and more attention to the zero discharge index of instrial and mining enterprises. How to deal with this kind of high concentration slurry and what kinds of dehydration equipment are on the market? This is what most instrial and mining owners want to know, At present, the equipment for mud sewage treatment on the market include belt filter press, frame filter press, box filter press, centrifugal sludge dewatering machine, etc., but not all dewatering equipment are suitable for the treatment of sand washing mud water in ore field. This kind of mud has high concentration and heavy ratio, and the efficiency of traditional shovel digging and natural drying method is extremely low, which is not easy to treat. For example, e to the structure of belt type and box type filter press, the separation of mud and water must rely on filter media (filter plate and filter cloth), but the mesh of filter media in the current market can not be as small as mud particles, so we can only increase the dosage of reagent to make up for this lack, and non coagulation greatly increases the operating cost of the equipment

I. dosing cost of mud treatment equipment:

working principle of washing sewage treatment equipment: according to the different proportion of materials, after the sewage enters the centrifuge, the solid particles are dropped onto the wall of the drum through the high-speed rotation of the drum, and the mud wall is continuously formed at the mud outlet through the forward extrusion and scraping of the screw pusher, and the water flows back to the outlet, The sludge is pushed out to the sludge outlet. There is no filter cloth in the whole machine. It only relies on centrifugal force to separate mud and water. The requirement for dosage is very low. A 350 type centrifuge works for 8 hours a day, and the dosage is 1-3kg. Depending on the sludge, the centrifuge can even achieve better treatment effect for many materials without dosing. This greatly reces the cost of dosing and treatment. Because of the large mesh of the filter belt of the belt filter, the requirement of mud burst flocculation is high ring dewatering, which leads to the increase of dosing cost. A certain amount of flocculant needs to be added into the concentration tank when the plate and frame machine is used for treatment

Second, the long-term cost of mud treatment equipment quotation:

the power consumption of the centrifuge is three to four kilowatts higher than that of the belt machine when it is in use, which is 30 yuan more per day when it works eight hours per day. However, the centrifuge does not need to be washed with water ring the whole dehydration process. The belt type machine is different. A one meter belt type machine needs 60-70 cubic meters of water to backwash the filter belt every day. The backwashing water is refluxed and reprocessed, and the treatment cost of 2.5 yuan per cubic meter of water (the dosage is larger than that of centrifuge) will increase by at least 150 yuan per day. For example, the cost of backwashing with tap water is higher, which can save 120 yuan per day and at least 40000 yuan per year. The filter cloth must be cleaned after the sludge is treated by the plate and frame machine, otherwise the treatment effect will be affected, the treatment time will be prolonged, and it will be time-consuming and laborious. Secondly, the plate and frame filter press has pressure requirements for the feed pump. The tailing mud including tailing mud contains part of fine sand particles to a certain extent. This part of fine sand makes the blade wear cycle of pulp pump shorter under high pressure flow rate, the pump is easy to be damaged, and the price of high pressure pump is high

The sludge formed in the sedimentation tank was fed into the horizontal screw settling centrifuge, and flocculation was carried out ring the process

III. adaptability of mud treatment equipment price to sewage property:

the mud dehydrator of sand washing field has strong adaptability to sewage property. No matter what kind of sewage, it can adapt to treatment. Some can be treated without adding chemicals, and some can be treated with a small amount of chemicals. Especially for some sludge with oil, fat and stickiness, the other two kinds of equipment are very difficult to complete. Filter cloth is easy to be blocked by sludge, sludge particles are too fine, oily and viscous, so it is not easy to deal with. The separation principle of centrifuge is to separate mud and water by centrifugal force and rapid gravity sedimentation based on the specific gravity difference between mud and water. It doesn't rely on any filter medium, and the whole machine doesn't have any filter cloth, so it can run stably

Four, mud treatment equipment area:

a 350 model covers only 3.5 square meters, a one meter belt machine covers an area of 6-7m2, which is larger than the centrifuge, and a plate frame covers an area of more than the centrifuge, especially for some units with short plant area, it is more suitable to save the use of the site. And according to customer requirements can be made car type mobile operation. This operation mode is particularly flexible and simple for the treatment of piling mud in construction sites and the dewatering in river dredging engineering. Due to the limitation of plate frame and belt dewatering mode, it can not meet the requirements of vehicle mounted mobile operation

5. Installation of mud treatment equipment:

the centrifuge is very convenient to install and does not need to be fixed by low foot screws. The ore washing instry only needs to make a common foundation (steel structure or brick concrete structure) to put the equipment on and connect the feed pipe and power supply to run. Because of the large volume of belt filter press and plate and frame filter press, the regional capital construction cost of dehydration is relatively high

6. Operation of construction mud treatment equipment:

continuous feeding and discharging of centrifuges, automatic sludge discharge, one person can operate multiple centrifuges at the same time, with low labor intensity. The whole dehydration process is carried out in a closed state, and there will be no mud splashing. The belt filter and plate frame machine are carried out under open condition, so the whole environment is not ideal. The plate and frame machine needs manual assistance to discharge sludge after long-time drying. Taking a 200 square plate and frame machine as an example, in order to improve the work efficiency, a single machine needs to be equipped with two workers to discharge sludge at the same time, which is time-consuming and laborious, and the operation process is cumbersome

7. Quotation and maintenance of mud treatment equipment:

the main vulnerable part of centrifuge is bearing. At present, our company adopts SKF Bearing imported from Germany, and the replacement cycle is generally more than two years. The whole equipment is of steel structure, and the easily worn parts are lined with tungsten steel, so as to fundamentally solve the problem of fine particle wear. The filter cloth, plate frame and pump of belt filter and plate frame filter press are easy to be damaged. The price of a piece of filter cloth is more than ten yuan per square meter. According to the material load, it needs to be replaced in about two months. As most ore mills and concentrators are open-air operation, the operation environment is harsh, which is easier to accelerate the aging of filter cloth and filter plate and greatly shorten the replacement cycle. The belt type machine is open, some transmission parts are directly in contact with sewage ring operation, and the foundation foot frame is easy to be corroded and skewed after long-term operation (this situation can not be repaired), which leads to the opening angle of the contact surface of the filter belt is not parallel, the filter cloth is deviated, the dryness and humidity of the sludge after dewatering are uneven, and it is difficult to transport, the price of replacing the filter belt is high, and the maintenance cost is increased

summarize the advantages of mud treatment equipment:

large treatment capacity, long wear-resistant service life, reasonable structure, low noise, small floor area, wide range of application, simple operation, convenient maintenance, high degree of automation, stable operation, low equipment cost and low capital construction cost

4. Hello, tailing dry drainage equipment and sludge dewatering equipment. This equipment has different sizes, such as 1 meter, 2 meters, 3 meters and different prices. I don't know, so I have to set the price according to your size. You can go and have a look at the tailing dry drainage equipment and sludge dewatering machine of Guangzhou lvtianyuan. I bought them before, and the effect is very good, especially the treatment capacity is very good, It can be used 24 hours a day.

5. Tailings dewatering can use filter press, now the belt filter press dewatering effect is very good
belt filter press is the mainstream equipment for sludge and mineral powder dewatering

6. Longyue environmental protection piling sludge dewatering machine, this is good, dealing with mine sludge dewatering treatment

7. Sludge dewatering equipment includes belt filter press, box filter press, centrifuge, natural drying and so on
I: belt filter press (continuous dewatering and mechanical extrusion) is especially suitable for dewatering of inorganic sludge, but not for organic sludge
advantages: 1) easy machine manufacturing, less ancillary equipment and low energy consumption; 2) Continuous operation, convenient management, large dehydration capacity
disadvantages: 1) high polymer price and high operation cost; 2) The dewatering efficiency is lower than that of the frame plate filter press
the box filter press generally has the following characteristics:
mechanical dehydration, suitable for intermittent operation, low filtration capacity; Large investment in infrastructure equipment. Other occasions where dehydration equipment is not applicable; Need to rece transportation, drying or incineration costs; To rece the cost of landfill
advantages: 1) intermittent dehydration; 2) Hydraulic filter
disadvantages: 1) high solid content of filter cake; 2) The solid recovery rate is high; 3) The drug consumption is low
Three: natural drying, used for sludge dewatering with good filtration performance, dry climate areas, rainy areas should not be built in the open air, areas where land use is not tight, and areas where environmental sanitation permits
it can be used for sludge dewatering with good percolation performance. It is not suitable to be built in the open air in the dry climate and rainy areas, where the land is not tight, and where the environmental sanitation permits
advantages: sludge drying tank 1) intermittent operation; 2) Natural evaporation and percolation
disadvantages: 1) low capital construction cost and low equipment investment; 2) It is easy to operate and low cost< Third, centrifuge (continuous dewatering and centrifugal force) is not suitable for sludge dewatering with very small density difference or liquid phase density greater than solid phase, and the particle size is required to be greater than 0.01mm
advantages: 1) less capital investment and less land occupation; The structure of the equipment is compact; 2) No or less chemicals are added; The treatment capacity is large and the effect is good; The total treatment cost is low, the degree of automation is high, the operation is simple and sanitary
disadvantages: 1) at present, imported centrifuges are mostly used in China, which is expensive; 2) Large power consumption; The sludge contains gravel, which is easy to wear, and the equipment has certain noise
Chief Engineer's house - real estate technology selection platform

8. The moisture content of sludge discharged from biological treatment is very high, reaching 99%, This kind of sludge should be concentrated first to remove certain moisture, so that the moisture content of sludge can be reced to 95%, and then dewatered by dehydrator. The dewatered sludge with moisture content of about 30% - 50% can be transported or treated by other methods.
the sludge thickener is the thickening equipment known according to the sludge thickening principle, and the sludge thickener can also be used for economic consideration The sludge dewatering machine is divided into vacuum dewatering, pressure filtration dewatering and centrifugal dewatering. The principle of vacuum suction, pressure filtration and centrifugal dewatering are used respectively.
the integrated sludge thickening machine combines the two parts and integrates them

9. Dewatering machine selection
the plate frame dewatering machine is a kind of dewatering machine with strong adaptability. The most prominent feature is that the solid content of the cement cake is high, and the dewatering capacity is higher than other types of dewatering equipment. The solid content of the mud cake can exceed 45%, and more than 95% of the solids can be recovered. The plate frame dehydrator has the characteristics of reserving the number of filter plates. If the sludge volume of the treatment station increases to a certain extent, we can improve its treatment capacity by adding filter plates at the reserved place, thus greatly recing the cost of secondary investment. However, when there are many supporting equipment, continuous treatment can not be realized

selection of plate frame dehydrator
the solid content of sludge entering the plate frame dehydrator should be higher than 1% as far as possible. The design of the main machine and frame of the plate frame dehydrator should ensure that it can bear the static load of the equipment and the dynamic load generated ring the operation of the equipment. The equipment must be safe and reliable, with sufficient safety factor, and there is no deflection, deformation or vibration ring the operation. There are many types of plate and frame dehydrators, so the sludge concentration, operation cycle, machine cost and moisture content of sludge cake must be fully considered in the selection. Each type of filter press must be tested in advance, and the experimental equipment is generally small-scale experimental machine. The choice of sludge discharge mode. Because the viscosity of sludge water discharged from sewage treatment station is relatively high, the automatic sludge discharge mode of filter cloth oscillation or filter cloth walking can be generally selected to ensure the sludge discharge effect

selection of filter plate and filter cloth materials
there are many kinds of filter plate materials, which must be selected according to the use needs. Generally, PP filter plate and steel reinforced rubber membrane filter plate are used in sludge dewatering machine of sewage treatment station. The metal filter plate is usually suitable for the environment with special requirements when the temperature is higher than 100 ℃. The scientific selection of filter cloth is related to the dewatering effect of dehydrator to a great extent, and the type of filter cloth must be consistent with the nature of sludge. In the selection of filter cloth, not only the past engineering experience, but also the experimental results must be considered. Generally, the selected filter cloth materials mainly include polypropylene, nylon and polyester
with the improvement of relevant national standards for pharmaceutical sewage sludge treatment, more efficient sludge dewatering equipment will have a very broad market application prospect. Based on this, we should actively study and test new technology and new equipment, combined with the actual work of the sewage treatment station, and accumulate more practical experience, so as to lay a solid foundation for sewage treatment and purification

advantages of Meibang sludge dewatering machine
1. Meibang brand guarantee, Meibang has won the title of gold medal enterprise of dewatering machine for ten consecutive years
2. Large scale factory (MEIBANG Instrial Park: No. 27, Longteng Road, Huashan Town, Hua District, Guangzhou City, Guangdong Province), which is directly sold by the manufacturer to ensure good quality and low price
3. Technology reserve: Meibang is a high-tech enterprise supported by the national 12th Five Year Plan, and the equipment proced by Meibang is even better than many imported machines
4. After sales service: Meibang has set up after-sales outlets all over the country to provide one-stop installation, commissioning, personnel training and after-sales service. Meibang promises to replace the new machine free of charge for one year and provide lifelong maintenance service
5. With the choice of knowing the business, the equipment of Meibang has been recognized by a large number of old customers and accumulated a lot of real word-of-mouth. Where to ask and where to buy is to recommend Meibang.

10. The types of sludge dehydrators commonly used in environmental protection instry are as follows:
1, rolling sludge dehydrator

2, plate and frame filter press

3, belt filter press

4, centrifugal sludge dehydrator

5, stacked screw sludge dehydrator