Category Archives: Decanter Centrifug

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.

decanter centrifuge

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.

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.

If you want to know more about decanter centrifuge, please contact me freely.

Drilling mud decanter centrifuge is the fourth stage equipments for a drilling mud system.Drilling mud cleaning first stage uses drilling fluids shale shaker ,then second stage uses desander,third desilter,(now drilling mud cleaner is widely used to replace desander,desilter.

decanter centrifuge

With a horizontal oilfield decanter centrifuge, the mixture of drilling liquid and cuttings and solids enter into the centrifuge. When it enters the centrifuge, it gets spun at an extremely high rate, sometimes as much as 3000 times the force of gravity. When this happens, the solids will separate from the liquids. When they are separated, the drilling liquid can be decanted and eventually returned to the mud tank where it can be replaced into the borehole for efficient drilling.

One of the biggest advantages to having an oilfield decanter centrifuge is the size that it takes up. Compared to other solids control equipment, a centrifuge takes up less real estate.

On many oilfields the site footprint is not large enough to support a wide range of solids control equipment. A centrifuge is highly effective and efficient so you can separate solids from drilling liquids even on small drilling sites.

Decanters (decanter centrifuges) are “solid material oriented” centrifuges which can process liquids / suspensions with high solid material contents (up to ca. 60% by volume).

The decanter (decanter centrifuge) belongs the continuous sedimentation centrifuges with respect to the eduction of fluids as well as the eduction of solid material.

decanter centrifuge

Typical areas of use are:

Clarification of liquids and suspensions
Thickening of sludges
Dehydration of sludges and suspensions
Classification (wet classification of solid materials in a suspension according to grain size)
Separation of 3-phase mixtures (two fluid phases, insoluble in each other, and a solid material phase)

You are welcome to contact Tangshan Dachuan Machinery to get more detailed infos, we will supply our best service for you.

The three phase decanter centrifuge. It is made of cone drum, spiral unloader, differential system, bearing base, engineer base, main motor, back motor and electrical system.


To be as a leader of wasterwater treatment company.  DC Solid control developed a 3 phase decanter centrifuge used in oil and gas field and all kinds industires wastewater treatment projects.

three phase centrifuge

All of our decanter centrifuges adopt the international advanced special structure design. The centrifuge has the advantages of superior quality and efficiency, with larger treating capacity , better separation effect and easy to operate.

The machine has the certificated of ISO9001-2000. Meachanical properties is higher than JB/T502-2004《spiral sedimentation unload centrifuge》standard.

Centrifuge for is fourth phase oil drilling rig fluid solids control equipment. Mainly separate particle sized 2-7microns. DC Solid control produced the best quality centrifuge working well in -40degree centigrade.

As we know, at the beginning centrifuge for drilling rig is from chemical and food industry, etc. But now, we find centrifuge for drilling fluid process is more advanced and professional.


Centrifuge Main work performance:

1. Centrifuge capacity

Treating capacity is larger than before. Such as there are some centrifuge can even treat
drilling fluid upto 4t

2. Centrifuge speed effect

We usually have two type centrifuge. Including common or middle speed and high speed centrifuge. Commonly, if we only choose middle speed centrifuge we can’t solve
all problems on drilling fluid. High speed centrifuge can separate drilling fluid as two part including water and drier objects. This will benefit environment much

3. Structure

On the structure, we change double motors to single motors driving this make construction more simple and compact.

So if you have interest with DC high quality centrifuge, please feel free to contact us.

Last week, our engineer went to the karachi, pakistan to adjust the decanter centrifuge for clients who are mainly focus on rice protein, according to 2 days commission, adjusting, and training, the users have already well know the decanter centrifuge.


DCLW Series decanter centrifuges provide exceptional performance when separating solids from 1 or 2 liquid phases in one single continuous process. The units are designed to handle a wide range of particles with diameters from 5 mm to a few microns.

With their high efficiency, continuous operation, low capital cost/capacity ratio, low maintenance costs and low energy consumption, the decanter centrifuges are ideal to use in a range of duties including process, food and waste applications.


DC Machinery uses high-grade stainless steel for all parts that come into contact with the process, in order to avoid any risk of the corrosion associated with the use of carbon steel. Corrosion leads to product contamination, lack of balance, high maintenance and lengthy down time.

Following the development and progress of decanter centrifuges. More and more textile enterprise choose the small treating capacity decanter centrifuge used for separate the solid phase in the wastewater.

The solid bowl decanter is a basic, standard machine to which features can be added for special applications. The solid bowl is ideal for clarification of liquids, thickening of sludges, and separation of solids.


Process conditions of the textile field decanter centrifuge:
1. Compact design at high specific throughput
2. Low vibration levels
3. Absolute pressures from 0 to 8 bar
4. -90° C to +200° C
5. CIP cleaning
6. Flameproof or explosion-proof standards making the decanter ideal for applications with solvents and hazardous materials.

decanter centrifuge

The solids dewater by a combination of drainage and compression. The degree of drainage/compression depends on the nature of the solids, the setting of the centrifuge, and the required degree of dewatering. The transport and discharge of pasty, sludge-like or shear-sensitive solids are facilitated by the appropriate combination of conveyor geometry, cone geometry, and control of the differential speed.

Drilling fluid centrifuge is an important part in solid control system. Drilling mud cleaning first stage uses drilling fluids shale shaker ,then second stage uses desander,third desilter,(now drilling mud cleaner is widely used to replace desander,desilter).

As we know, at the beginning centrifuge for drilling rig is from chemical and food industry, etc. But now, we find centrifuge for drilling fluid process is more advanced and professional.

drilling fluid centrifuge

The drilling mud decanter centrifuges can separate fine particles well,for separating 5~7μm particles in drilling mud,usually use medium speed decanter centrifuge,for less then 2μm,usually use high speed decanter centrifuges.

Actually, in drilling rig solids control system centrifuge is the most complicated one. It is rather difficult for operator get leagal operation, etc. However, in long term its important position is following shale shaker subsequently.

Shortly speaking, centrifuges play an important role in the whole mud cleaning system, meanwhile it is an obbligato part for the mud cleaning unit. If you want to learn more about it, please feel free to contact me.

DC Mud equipment company got an new order of decanter centrifuge from Thailand. Now the drilling fluid centrifuge wil delivering to the port.

Drilling mud decanter centrifuge is the fourth stage equipments for a drilling mud system.Drilling mud cleaning first stage uses drilling fluids shale shaker ,then second stage uses desander,third desilter,(now drilling mud cleaner is widely used to replace desander,desilter).

deacnter centrifuge

The high-speed, solids control decanter centrifuge removes ultra-fi ne drill solids of greater than 2 to 5 microns at an average process rate of approximately 20 percent of the mud pump flow rate, Anderson continued.

A centrifuge also can be used as a barite recovery system or dewatering system, a practice widely used in the oil and gas industry. The dewatering process, said Anderson, allows up to 100 percent removal of all suspended solids from the drilling fluid. The reclaimed water can be used to make up new mud for another job or as rig wash-down water.

DC Machinery is a professional manufacturer of all kinds of decanter centrifuges. We can provide many different fields used centrifuges, such as oil and gas, food, chemical and mine well industry. Below is a introductuion of the full hydraulic drive decanter centrifuge.

A centrifuge with hydraulic drive is an interesting object from the fluid dynamics point of view. To achieve high efficiency, the hydraulic resistance of the inner, quickly rotating with the rotor, passages should be minimised.

decanter centrifuge

At the same time the fluid should pass through an area far away from the axis of rotation, where the centrifugal force is greater. Nozzle efficiency is crucial. The air in the gap between the rotor and the centrifuge cover also moves, and the air friction makes a
significant contribution. Jets from the nozzles might break down into a fine spray and hit the rotor, slowing it down. Optimizing such a device is quite a challenging task, but this can, indeed, be done.

The hydraulic bowl and scroll drive system drives both the conveyor and bowl of a decanter centrifuge from hydraulic pump unit by two hydraulic oil circuits.

The advantage of the full hydraulic drive centrifuge is for use in high temperature ambient for heavy mud with flexible bowl and differential speed. The compact one skid design makes it easier for rig up.