Product Description
2-Phase Decanter Centrifuge for Drilling mud Solid-Liquid Separation
Tailings are still frequently stored in large settling basins or sludge ponds They are a great burden on the environment. The process water bound by the tailings remains unused. With modern dewatering solutions, mining residues can be treated economically and the process water that they contain can be recovered. This saves both space and cost and is environmentally friendly.
In mining, the term tailings refers to fine-grained residues in the form of sludges. They are created during the processing of ores and minerals. The resulting waste water or overburden sludge is partly contaminated with chemicals. Tailings are a risk to the environment when stored in sludge ponds. If the dam breaks, this can have a significant impact on humans and the environment.
The storage of tailings in sludge ponds is increasingly being replaced by the storage of dewatered tailings. Mining companies store the dewatered sludge on the ground. This complies with statutory regulations in most countries. In hard-to-reach and confined storage regions or in earthquake-prone areas, it is particularly advantageous if the tailings have been dewatered. This minimizes environmental risks and space requirements. The cleaned process water can be recycled. Mine operation costs are significantly reduced.
Recycling of captured process water
Decanter centrifuge is a mechanical equipment which utilize the principle of centrifugal and sedimentation and can carry out continual separate the suspend liquid with density difference.
The centrifuges which made by out factory can clarify, dehydrate and classify the suspensions with 0.002-3 mm solid-phase particles and thickness range at 0.5~40%.
The product can be classify into two type LW-counter-current and parallel-current base on its structure feature. According to feed feature, product can be divide into LW two-phase separator, LWS three-phase separator.
It is suitable for separating different feed under different process condition, and widely use in food, chemical, light industry, environmental protection industry etc…
The purpose of separation is to separate out substances with different mass ratios from mixed fluid.Separation forms included solid-liquid separation,liquid-liquid separation and liquid-liquid-solid separation.
When mixed fluid enters rotating bowl of centrifuge through feed tube ,solids with larger density would rapidly deposit on inner wall of the bowl,forced by centrifugal acceleration.Then spiral pusher pushed deposited solids to taper end of the bowl,and discharges them out of centrifuge from residual outlet.Meanwhile ,liquid phase with smaller density forms a liquid ring layer and discharges from bowl through overflow port,the bowl and spiral pusher run at a high speed simultaneously ,for there exists speed discrepancy,deposited solids on the wall of bowl could be conveyed to residue outlet by spiral pusher.This separation process carry out continuously.
Application:
Decanter centrifuge is widely used in industries as municipal and industrial waste water treatment, food processing,
pharmaceuticals and chemicals, etc.
1. Decanter centrifuge solid phase dehydration: dehydration effect for processing materials of solid particles.
2. Decanter centrifuge particle size classification: used in the removal of material of large diameter solid particles.
3. Decanter centrifuge liquid clarification: used for removing solid particles in the suspension liquid are clarified
Types Of Decanters
There are several types of decanter centrifuges currently utilized in the industry, the most widely recognized are vertical,
horizontal and conveyor centrifuges. The principle behind a decanter centrifuge is based on the theory of gravitational
separation. For example, if you fill a vessel with a mixture of mud and water, over time the weight of the mud will cause it to settle down at the base of the vessel. With the mud congealed at the bottom, the water will be forced upwards, creating a clear separation between the two.
Decanter Principles
A decanter centrifuge employs the same principles of gravitational force. However, unlike the glass mixture, the process is
expedited through the use of continuous rotation. In fact, rotation provides anywhere from 1000 to 4000 times the normal
gravitational force, reducing the time required for separation from hours to seconds.
Rotational Separation
The concept of rotational separation is similar to rides found at amusement parks and county fairgrounds. In these rides, placing yourself at an angle allows you to overcome the gravitational forces induced by rotation. Similarly, a decanter centrifuge is essentially a bowl tube that rotates at an extremely high speed. The bowl tube is equipped with an internal conveyor which moves in the same direction but at a different velocity.
How the Decanter Process Works:
* 1: The slurry is brought into the centrifuge through an intake pipe and onto a conveyor.
* 2: Utilizing an internal feed compartment, the conveyor moves the slurry through a nozzle into the bowl.
* 3: The bowl rotates at high speeds to induce centrifugal forces.
* 4: High speed rotation separates the solid material from the liquid in a matter of seconds.
* 5: The conveyor delivers the solid material upwards where it is discharged through a nozzle.
* 6: The solid material removed, the purified liquid is released from a separate output. The ability to purify a liquid makes
decanter centrifuges ideal for waste water treatment facilities. However, there are variety of industries for which such
centrifuges play an important role. Similar to other decanter equipment, centrifuges are simple to install and do not require a foundation to build upon. Their efficiency saves time and materials and is an essential component for many blue collar industries.
Details
Reference standard
Technical parameter
|
Model
|
LWD450*1000
|
LWD450*1250
|
LWD355*1250-1
|
LWD355*1250-2
|
|
Bowl diameter
|
450mm
|
450mm
|
355mm
|
355mm
|
|
Bowl Length
|
1000mm
|
1250mm
|
1250mm
|
1250mm
|
|
Bowl speed
|
220rpm
|
3200rpm
|
3200rpm
|
320rom
|
|
Max Capacity
|
50M3/H
|
50M3/H
|
40M3/H
|
40M3/H
|
|
G-Force
|
815
|
2035
|
2035
|
2035
|
|
Gear box speed
|
40r/min
|
30r/min
|
30r/min
|
30r/min
|
|
Gear box ratio
|
35:1
|
57:1
|
57:1
|
57:1
|
|
Main motor power
|
30kw
|
37kw
|
30kw
|
37kw
|
|
Auxiliary motor
|
7.5KW
|
7.5KW
|
7.5KW
|
7.5KW
|
|
EX Standard
|
EddIIBt4/IECEX/A-TEX
|
|
Weight
|
2700kg
|
3200kg
|
2900kg
|
3200kg
|
|
Dimension
|
2900*1900*1750mm
|
2600*1860*1750mm
|
2600*1620*1750mm
|
2600*1620*1750mm
|
If you want to know more please contact me:Cathy\
What is a Decanter Centrifuge?
Horizontal Bowl centrifuges are also known as decanter centrifuges, centrifugal decanters or simply decanter machines and are primarily used for separation of liquids from appreciable amounts of solids. Decanters can separate over
50% (v/v) solids from liquids on a continuous basis. Typical industrial decanter applications include Crude Oil Tank Bottoms; Waste Oil; Industrial Wastewater; Sludge Dewatering; Fish Meal; WVO/UVO De-Sludging; Paint Sludge; Rendering etc. etc.
How does it work?
A decanter centrifuge separates solids from one or two liquid phases in one single continuous process. This is
done using centrifugal forces that can be well beyond 3000 times greater than gravity. When subject to such forces, the denser solid particles are pressed outwards against the rotating bowl wall, while the less dense liquid phase forms a concentric inner layer. Different dam plates are used to vary the depth of the liquid - the so-called pond - as required.
The sediment formed by the solid particles is continuously removed by the screw conveyor, which rotates at a different speed than the bowl. As a result, the solids are gradually "ploughed" out of the pond and up the conical "beach". The centrifugal force compacts the solids and expels the surplus liquid. The dried solids then discharge from the bowl. The clarified liquid phase or phases overflow the dam plates situated at the opposite end of the bowl.
Horizontal Decanter Centrifuges Centrifuge World offers a wide variety of horizontal continuous cleaning decanter centrifuges which provide effective, low-maintenance solutions to continuous liquid clarifying and / or solids dewatering with advanced process and mechanical performance features.
Decanter centrifuges are extremely versatile and capable of adapting to varying throughput and process and material types. The machines are easy to adjust, require little operator attention, are relatively quiet and feature a small footprint.
Biodiesel Centrifuges: Centrifuge World offers a wide range of manual clean and self-cleaning biodiesel centrifuges process capacities ranging from 1 to 30-gpm.
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.
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
Company Profile
Liaoyang Shenzhou Machinery Equipment Co., Ltd. belongs to SHENZHOU 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
Packing & Delivery
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.
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.
){kind=link}