Mining Industry Tailing Treatment Equipment Sludge Dewatering Decanter Centrifuge

Product Description

Mining Industry Tailing Treatment Equipment Sludge Dewatering Decanter Centrifuge

Mining Industry Tailing Treatment Equipment Sludge Dewatering Decanter Centrifuge
Sludge Dewatering Decanter Centrifuge


On-site treatment of the decanter centrifuge, the mud is directly separated into dry mud and clean water after entering the equipment

 

Decanter centrifuges process characteristics
The separation process in a decanter centrifuge relies on a few process characteristics such as centrifugal force or G-force, sedimentation rate and separating factor, differential speed between the conveyor and bowl, and clarity of the liquid discharge.Decanter centrifuges require a centrifugal force for the separation of the solids from the liquid. This characteristic is dependent on the radius of the centrifuge and its angular rotational speed. A decanter centrifuge applies a force equivalent to several thousand G's, which reduces the settling time of the particles. It is also favored to maintain a large G-force, which will result in an improved separation.
The rate at which sedimentation occurs is an important characteristic of the decanter centrifuge separation process. The
sedimentation rate is influenced by the particle size, the shapes of the particles, their differential densities and the viscosity between the particles and the liquid. This process characteristic can be improved by utilizing flocculating agents. The sedimentation rate is also dependent on the separating factor of the decanter centrifuge, which is related to the centrifugal force.
The exterior bowl and the scroll conveyor rotate at different high speeds. This differential speed between the two is accountable for the sedimentation throughout the decanter centrifuge cylinder. A high differential speed results in a smaller residence time of the cake settlement, so it is necessary to keep the cake thickness to a minimum to avoid impairing the discharge quality.
Keeping the cake thickness to a minimum also aids in the improvement of the cake dewatering process. For this reason, it is necessary to obtain an optimal differential speed to balance the cake thickness and quality.
The characteristic above all affects the clarity of the liquid output which is dependent on the volumetric throughout rate, where a higher flow rate will result in a poor liquid clarity. Another characteristic that influences the clarity of the liquid output is the differential speed. A low differential speed results in a better clarity, therefore, aiding in the separation process. The G-Force also plays a role in the clarity of the liquid discharge. Higher G-force results in an increase in the separation of the solid particles from the liquid and yields a better clarity.

  

 
 
Mining Industry Tailing Treatment Equipment Sludge Dewatering Decanter Centrifuge
Mining Industry Tailing Treatment Equipment Sludge Dewatering Decanter Centrifuge
Mining Industry Tailing Treatment Equipment Sludge Dewatering Decanter Centrifuge

 

Reference standard                                                                                                                                                          

Main Characteristics
1. Continuous working, spiral discharging, high capacity.
2. Compact structure and easy maintenance.
3. Wide applicability for chemical, oil, foodstuff, pharmacy industries and green industry in which solid-liquid separation is
required.
4. Suitable for various products, capable for separating wide-ranging solid phase grains( 0.005 - 2mm ), especially when separating solid phase has different size grains.
Main Choices
According to user's requirement, the product contact parts can be made of austenite stainless( 321, 316L…. ),Haynes alloy, titanic alloy or other anti-erosion materials.
Application
1. Industrial and municipal wastewater treatment
2. Oil&gas drilling mud/fluid control
3. Washing, separation and dewater of starch
4. Mycelium and zymtotic fluid separation for antibiotic
5. Dewatering of soybean and wheat protein
6. Dewatering of fish power and fish meat
7. Dewatering of vinasse
8. Clarification and extraction of fruit juice
9. Separation and purification for animal and vegetable oil
10. Production and purification of olive oil, palm oil, avcado oil
11. Separation and purification for coal tar
12. Grading of kaolin and grapgite
13. Grading and dewatering of dyestuff and pigment
14. Froth flotation for cleaned coal and dewatering of coal mud
15. Grading and dewatering of minerals working principle

Technical parameter

Model
Diameter(mm)
Lenght(mm)
Max speed
L/D ratio
G-force
Capacity(m3/h)
Main motor power(Kw)
Weight(kg)
Dimension(mm)
LW250*1000
250
1000
5000
4
2722
0.5-5
7.5
950
2120*1250*680
LW300*900
300
900
4200
3
2964
1-6
11
1160
2150*1300*900
LW300*1200
300
1200
4000
4
2784
2-6
11
1350
2450*1300*900
LW355*1160
355
1160
3600
3.3
2576
2-8
15
1400
2470*1350*830
LW355*1460
355
1460
3600
4
2576
2-10
15
1800
2750*1350*830
LW400*1200
400
1200
3200
3
2294
3-12
18.5
1800
2730*1600*1080
LW400*1600
400
1600
3000
4
2016
3-15
22
2000
3130*1600*1080
LW450*1800
450
1800
2800
4
1976
4-25
37
2500
3320*1700*1130
LW500*2000
500
2000
2800
4
1750
5-35
45
4000
3520*1800*1170
LW530*1855
530
1855
2600
3.5
2006
5-38
55
4680
3885*1350*1600
LW530*2120
530
2120
2400
4
1709
5-40
55
4800
4150*1350*1600
LW550*2000
550
2200
2800
4
2414
6-40
55
5700
4570*1380*1600
LW650*1950
650
1950
2200
3
1761
6-45
75
5000
4840*1510*1720
LW650*2600
650
2600
2000
4
1456
6-65
90
6000
5490-1510*1720
LW720*2160
720
2160
2000
3
1612
7-80
120
6000
5200*1600*1800
LW720*2880
720
2880
2000
4
1306
7-90
120
8000
3100*1600*1800
LW800*2400
800
2400
1800
3
1451
20-100
150
12000
5820*2000*1300
LW800*3200
800
3200
1800
4
1451
20-120
150
13000
7100*2000*1300

 

How it works
How does it work
The feed product is pumped into the decanter centrifuges through the inlet. Feed goes into a horizontal bowl, which rotates. The bowl has is composed of a cylindrical part and a conical part. The separation takes place in the cylindrical part of the bowl. The fast rotation generates centrifugal forces up to 4000 x g. Under these forces, the solid particles with higher density are collected and compacted on the wall of the bowl. A scroll (also screw or screw conveyor) rotates inside the bowl at a slightly different speed. This speed difference is called the differential speed. This way the scroll is transporting the settled particles along the cylindrical part of the bowl and up to the end conical part of the bowl. At the smallest end of the conical part of the bowl, the dewatered solids leave the bowl via discharge opening. The clarified liquid leaves through a paring disc (internal centripetal pump).
3-phase separation with a decanter

With a 3 phase decanter centrifuge, it is possible to separate 3 phases from each other in one process step only. For example, two liquids which cannot be mixed because of different densities (e.g. oil and water) are separated from a solids phase. The heavy liquid (water) collects in the middle between the oil and the solids layer. Thus the two liquids separated from each other can be drawn off from the decanter. The solids are transported via the scroll to the discharge openings as it happens also in 2-phase separation.
Typical applications of 3-phase separation are the production of edible oils such as olive oil, oil sludge processing, the
production of biodiesel etc.
Parameters and influencing factors of the separation
Feed, throughput and residence time
Through the feed, the separation medium to be processed can be input into the center of the infeed chamber of the scroll, where it is accelerated. The throughput will have an influence on the residence time.
Decanter Centrifuges Acceleration
The separation medium reaches its maximum speed in the decanter bowl, causing the solids to settle on the bowl inner diameter. A characteristic feature of the bowl is its cylindrical/conical shape.
Differential speed

There is a differential speed between the decanter bowl and the scroll, which is created by a gear unit on the industrial decanter centrifuges. The differential speed determines the solid content in the outfeed.
Filling volume / Weir discs or overflow weir
The clarified liquid flows to the cylindrical end of the bowl in the decanter centrifuge, from where it runs out through openings in the bowl cover. These openings contain precisely adjustable weir discs/weir plates by means of which the pond depth in the bowl can be set. The weir discs determine the filling volume of the bowl.

Advantages and limitations over competitive processes
Generally the decanter centrifuge has more advantages than disadvantages; however, there are some limitations when compared to other processes.
Decanter Centrifuges Advantages:
* Decanter centrifuges have a clean appearance and have little to no odor problems.
* Not only is the device easy to install and fast at starting up and shutting down but also only requires a small area for
operation compared to other competitive processes.
* The decanter centrifuge is versatile as different lengths of the cylindrical bowl section and the cone angle can be selected for different applications. Also, the system can be pre-programmed with various design curves to predict the sludge type, while some competitive processes, such as a belt filter press, cannot change the belt type to operate for different sludge types. Its versatility allows the machine to have various functions such as operating for thickening or dewatering.
* The machine can operate with a higher throughput capacity than smaller machines. This also reduces the number of units required.
* The device is simple to optimize and operate as it has few major variables and reliable feedback information.
* The decanter centrifuge has reduced labor costs compared to other processes, as it requires low continuous maintenance and operator attention.
* Compared to some competitive process such as the belt filter process, the decanter centrifuge has more process flexibility and higher levels of performance.

Decanter Centrifuges Limitations:
* The decanter centrifuges cannot separate biological solids with very small density differences, such as cells and viruses. A competitive process that is capable of separating these difficult-to-separate solids is the tubular-bowl centrifuge.
* The machine can be very noisy and can cause vibration.
* The device has a high-energy consumption due to high G-forces.
* The decanter centrifuge has high equipment capital costs. Hard surfacing and abrasion protection materials are required for the scroll to reduce wear and therefore reduce the maintenance of the scroll wear.
 

Packing & Delivery
Mining Industry Tailing Treatment Equipment Sludge Dewatering Decanter Centrifuge
1.Parking:standard wooden box
2.Spare parts :we supply some parts and accessories for free.
3.Electronic module:it is made up of electronic control cabinet.
4.Special tools:we supply a set special tools for free.
Company Profile
Mining Industry Tailing Treatment Equipment Sludge Dewatering Decanter Centrifuge

Mining Industry Tailing Treatment Equipment Sludge Dewatering Decanter Centrifuge
Mining Industry Tailing Treatment Equipment Sludge Dewatering Decanter Centrifuge

Reyes Import & Export Co., Ltd. belongs to REYES international Group. We are the professional manufacturer of Centrifuge & Separator, Liquid Filling Machine and packing machine. With many years producing experience, our factory have become leading manufacturer with professional technical team and Independent after-sale department.

Our international trade department can supply the whole project service. With many years development, we have known which factories have strong product with competitive price and we have built long-term and stable cooperation relationship with them. Our main area are the food and pharmacy project. Our successful project are coconut oil production line, liquid filling production line, packing production line and the tablet press production line, soft gelatin production line and so on. Our aim is providing you efficiently solution and superior after-service. We sincerely hope YOU are our next customers! Exported country: At present, our products have been exported to South Korea, India, Denmark, Russia, Georgia, Jordan, Bangladeshi, Tailand, Ethiopia, Finland, the United States, Canada, Australia, Spain, Japan, Colombia, Romania and so on more than 30 countries

FAQ
1. 12 months guarantee period from machine arriving date.
2. Abundant spare parts in stock are available to provide.
3. Our technicians could be dispatched for overseas service.
4. 7*24 hours technical consultation.
5. Your workers could get trained both in our factory and yours.
6. Routine tracing till the machine work properly will be done timely.
7. We will remind you to do the normal maintenance.
8. Your suggestions or any comments & reflection would be treated in priority.
9. Marketing team will visit you during our visit in your country if you require.