Decanter centrifuge is a commonly used drilling mud processing equipment

Decanter centrifuge is a commonly used drilling mud processing equipment. The decanter centrifuge has the advantages of good separation performance, strong adaptability, continuous automatic operation, small exercise intensity, small footprint, and low maintenance cost, so it has won the recognition of customers.

Decanter centrifuges are more suitable for the harsh on-site working conditions of oil field drilling. The centrifuge uses the principle of centrifugal sedimentation to separate the drilling suspension. The suspension enters the drum from the feed pipe through the liquid outlet hole in the screw pusher, and the solid particles are pushed to the inner wall of the drum under the action of centrifugal force and pushed by the screw. The blades on the feeder are pushed to the slag discharge port at the small end of the drum, and the liquid phase overflows through the overflow hole at the large end of the drum. Such continuous circulation, in order to achieve the purpose of continuous separation. Centrifuge is used in the drilling mud treatment process to work reliably and have a long life.

The screw propeller, the key component of the centrifuge, is made of thick steel plate. The thickness of the wear-resistant layer on the surface is twice as thick as before, and the surface is sprayed with tungsten carbide. Ensure the ultra-long life of the centrifuge. The main bearing adopts imported high-quality bearings, and the differential adopts high-precision hardened gear transmission. The use of a decanter centrifuge to process drilling mud is based on the characteristics of petroleum drilling fluids. Special equipment for solid-liquid separation is designed to complete various processes such as feeding, centrifugal sedimentation, and unloading at full speed. It is mainly used to recover barite , To remove fine solids, reduce the solid content of the drilling fluid, control the density and viscosity of the drilling fluid, ensure the performance of the drilling fluid, and play an important role in rapid drilling.

KOSUN- China Solids Control Leader&Drilling Waste Management Expert
WhatsApp/Wechat:+86 18792396268
Contact person: Lily Wang
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Analysis of the decanter centrifuge manufacturing industry

Analyze the current situation of our country’s existing decanter centrifuge manufacturing industry, the manufacturing technology of our country’s centrifuge manufacturing and foreign centrifuge manufacturing, new technology research and development, especially in the reliability, stability, service life, assembly accuracy, and flexibility of operation. There is still a certain technological gap in humanization and the application of certain new technologies. However, these technological gaps are also gradually narrowing with the improvement of our country’s independent R&D and manufacturing capabilities, product innovation capabilities, and R&D capital investment. At present, this gap is gradually narrowing.

There are many types of decanter centrifuges in the domestic decanter centrifuge manufacturing industry, and each type has different functions for separating materials. For example, drilling fluid centrifuges are used to separate oil and natural gas drilling and drilling fluids produced during drilling. The centrifugal high-speed operation can realize the separation of drilling fluid, and it has the characteristics of high speed, long life, and obvious separation effect.

Decanter centrifuges are usually used to remove liquid from solid phase materials. It is suitable for the separation of materials that are easy to separate, large particles, large solid-liquid density difference, low viscosity, high concentration, large processing capacity, and higher dryness than clarity requirements. It is used in petrochemical, agriculture, food, environmental protection, and biology. In the fields of medicine and hygiene, the sedimentation speed of different materials under the action of the centrifugal force field will have different centrifugal force differences, so as to realize the solid phase separation, liquid-liquid separation of materials.

KOSUN- China Solids Control Leader&Drilling Waste Management Expert
WhatsApp/Wechat:+86 18792396268
Contact person: Lily Wang
Online consulting:

Features of KOSUN Decanter Centrifuge and Mud Agitator

Advantages of KOSUN Decanter Centrifuge:

1. Strong craftsmanship, the device can be adjusted automatically at any time according to the material condition during the operation process to achieve the processing effect.

2. The noise is small, and the structure design adopts the double-layer plus sound insulation layer design. The low noise during operation has little impact on the working site environment.

3. The degree of automation is high. During the operation of the decanter centrifuge, no matter it is feeding, separating or unloading, every link is continuously and automatically carried out under high-speed operation, so the user is very convenient and simple in operation .

4. The processing capacity is very large, because the structure has been improved, it can treat more materials.

5. The decanter centrifuge will not have too much impact on the working environment on site, because the equipment is carried out under completely enclosed conditions during the entire operation process, so there is no need to worry about pollution at the operation site. Completed clean production.

6. The working function of the equipment is very stable, so it can maintain high working efficiency.

7. The safety is good, and the protection device is set, so the decanter centrifuge has higher safety functions.

Advantages of KOSUN Mud Agitator:

The mud agitator has the advantages of compact structure, small floor space, large transmission torque, stable operation and reliable operation.

  1. The arc cylindrical worm reducer is adopted, the shaft section is a circular cylindrical worm, and the tooth profile of the worm wheel is a circle conjugated to the worm. Therefore, the convex and concave meshing performance is reliable and the structure is compact;

2. Combination of reducer and explosion-proof motor, it is easy to maintain and suitable for use under harsh working conditions in the field;

3. The mud agitator is strong, has a wide range, and reduces the starting resistance torque;

4. The motor is placed horizontally for easy installation, adjustment and replacement;

5. Various gearbox and blade combinations can meet most requirements;

6. The mud agitator has high efficiency in deep and large containers;

7. It can be designed to produce suitable shear force according to needs;

8. Expose more fluids to contact with the atmosphere, and the mud agitator helps cool the drilling fluid.

KOSUN- China Solids Control Leader&Drilling Waste Management Expert
Wechat:+86 18792396268
Contact person: Lily Wang
Online consulting:

Application of Decanter Centrifuge in Directional Crossing

Decanter centrifuge is an efficient centrifugal separation equipment. Decanter centrifuge is a settling equipment with horizontal spiral discharge and continuous operation. It can be widely used in sludge dewatering, particle size classification, liquid phase clarification, power plant sludge, printing and dyeing sludge, papermaking sludge, natural gas desulfurization sludge, drilling mud, calcium carbide sludge, fiberboard sludge, waste oil purification, beating sludge , activated sludge, etc.

decanter centrifuge
decanter centrifuge

KOSUN decanter centrifuges can be used in tailings treatment equipment, pharmaceutical sludge treatment equipment, river sludge dewatering machines and other fields.

Decanter centrifuge is a settling equipment with horizontal spiral discharge and continuous operation. The working principle of this type of centrifuge is: the drum and the screw rotate at a high speed in the same direction at a certain differential speed, and the material is continuously introduced into the inner cylinder of the conveying screw from the feeding pipe, and then enters the drum after being accelerated. Under the action of the centrifugal force field, the heavier solid The phases are deposited on the wall of the drum to form a sediment layer. The conveying screw continuously pushes the deposited solid phase to the cone end of the rotating drum and discharges it out of the machine through the slag discharge port.

In terms of environmental protection applications, the decanter centrifuge mainly refers to the dewatering of sludge produced in the process of industrial and civil sewage treatment. Today’s environmental issues have become the focus of common concern all over the world. In this context, the value of the decanter centrifuge has been reflected. The decanter centrifuge has the characteristics of large processing capacity, automatic operation and good dehydration effect, and has been widely used and promoted in the field of environmental protection. Single product sales of decanter centrifuges account for about 50% of all centrifuge products. In foreign countries, decanter centrifuges are the first choice for sewage treatment equipment.

KOSUN- China Solids Control Leader&Drilling Waste Management Expert
Wechat:+86 18792396268
Contact person: Lily Wang
Online consulting:

Saving and environment protection decanter centrifuge

KOSUN DC Series Saving and environment protection  Decanter Centrifuge is used to separate suspended solids ≥2μm in diameter and treat the drilling mud and fluids. It is especially effective when used in oilfield service industry, industrial service industry and especially in environmentally sensitive areas. This type of centrifuge is high in recovery rate, effective in solids control and remarkable in the reduction of cost spent on drilling mud resupplying and management. It is a very sophisticated dynamic balancing machine, able to operate stably with the whirling speed ranging from 0 to 3900 and generate centrifugal force of 3000G.

Decanter Centrifuge
Decanter Centrifuge

Features and Benefits of KOSUN Decanter Centrifuge:

  1. Innovative design includes longer bowl, allowing drilling fluids to thread through more slowly, thus resulting in drier solids and finer separation point;
  2. Big bowl offers big volume. It also generates high-G force;
  3. Stainless steel bowl, scroll, compartment are available and covered with corrosion-proof coating so as to have longer lifespan;
  4. Tungsten carbide scroll points with wide spacing flights at tapered end create a finer layer of conveyed solids for consistent, uniform separation and maximum solids control efficiency.
  5. German FAG or Swedish SKF brand bearings are available;
  6. Electrical Components complies with SIEMENS/Schneider ATEX or IEC Ex.
  7. Screw pump and submersible slurry pump are provided to meet liquid feeding requirements of centrifuge of various customers

KOSUN Decanter Centrifuge can meet with different requirements of mud treatment under various drilling conditions, that can do sedimentation and separation for particles more than 2 μm. After treatment, the mud can achieve ideal viscosity and proportion, resulting in better recycling, high efficiency, saving and environment protection.

decanter centrifuge manufacturer
decanter centrifuge manufacturer

Decanter Centrifuge Manufacturer: KOSUN is a manufacturer for drilling waste management equipments, solids control equipments and oil sludge treatment system in China. Kosun manufacture the top technology of decanter centrifuge, Hi G dryer shaker, and vertical cuttings dryer.(Editor:Kosun Lily.Wang)

Kosun- China Solids Control Leader&Drilling Waste Management Expert

Tel.: +86 29 87304914


Contact person: Lily Wang

Online consulting:

Model Selection Guide of Decanter Centrifuge

Many people can easily know how to choose a decanter centrifuge, but it is a little difficult for them to select a suitable model of centrifuge. Here is a simple method to judge a proper model for you.

decanter centrifuge
Decanting Centrifuge

First, the model of a decanter centrifuge represents the following meanings: For example, LW450*842, a model of decanter centrifuge, among which L means Luoxuan in Chinese Pinyin, W means Woshi in Chinese Pinyin, 450 means the bowl diameter of decanter centrifuge, and 842 means the bowl length of decanter centrifuge.

A suitable model of decanter centrifuge can not only solve production problems and improve work efficiency, but also save production cost and reduce business risks. Several main factors that determine the centrifuge model are as follows:

decanter centrifuge
decanter centrifuges

  1. Speed of decanter centrifuge: The speed of a common decanter centrifuge is more than 2000RPM. For some materials hard to separate, a higher speed is required. The higher the speed is, the higher the separation factor of centrifuge, the better the separation effect.
  2. Material of decanter centrifuge: PH value of materials to be treated determines the bowl material of decanter centrifuge. Different materials have diverse physical and chemical indexes in their abrasion and corrosion resistances. Overseas decanter centrifuges are generally made of 316L or duplex stainless steel, with wear parts made of ceramic materials.
  3. Differential control of decanter centrifuge: Different differentials have different control accuracies, service lives and maintenance costs. The higher its differential accuracy is, the better its adaptation to materials is. So it is advisable to select equipment with a high differential accuracy.
  4. Length-diameter ratio: The bigger the length-diameter ratio of decanter centrifuge is, the higher the handling capacity is, the lower the moisture content is.
  5. Control system: At present, almost all of equipment manufacturers at home and abroad have achieved a full automatic control over the equipment.
  6. Installed power: As for a control over energy consumption, generally speaking, domestic equipment has a higher energy consumption ratio, while foreign equipment has a lower one.
  7. Manufacturing technique: Since a decanter centrifuge is a kind of separation equipment with high precision machining requirements, the centrifuges manufactured by enterprises without a precision machining capability will suffer from a high maintenance ratio and a restricted handling capacity.

Kosun- Solids Control Company

Oilfield Solids Control of Decanter Centrifuge

In the whole solids control system, the drilling mud Decanter Centrifuge is the most important solids control equipment, it is the forth stage equipment and it decides the quality of drilling fluids in a way. The first equipment is oilfield shale shaker, it is one of the most important equipment, too. The second stage equipment is desander, third equipment is desilter. Sometimes they are combined to be as one equipment—drilling mud cleaner.

Oilfield Solids Control
Oilfield Solids Control

KOSUN Drilling Fluid Centrifuge is designed to speed up the settling process. The rotating speed is transformed into centrifugal force inside the rotating assembly to accelerate particle settling in accordance with Stoke’s Law. In essence, a centrifuge is a miniature settling pit that alloys very rapid settling of solids under controlled conditions. Though much more complicated than a hydrocyclone, centrifuges have the advantage of achieving extremely fine cut points. Centrifuges can improve the cut point by a factor of 6X when compared to a prototypical shaker/hydrocyclone system and can dramatically increase the drilling fluid life.

Decanter Centrifuge

KOSUN Decanter Centrifuge can effectively remove the harmful solid particles from the oil and gas drilling fluid, improve the mud performance, ensure the drilling safety, lessen the pollution of oil/gas reservoir and reduce the mechanical abrasion of drilling equipment. 1500-3000 rpm centrifuge can separate 2-7μm solid particles. It is an ideal choice for drilling mud purification.

Drilling fluids is important for the whole drilling system, but is too expensive, we usually spend abundant expense for that. But if we clean the drilling fluids and use it for recycling, we can save more drilling cost. At this time, the drilling fluids solids control of the drilling fluids seems to be so important.

Kosun- Solids Control Company

Decanter Centrifuge Safety Operation Regulation Tips

In the whole markets, centrifuge or even decanter centrifuge has been used in most fields. There are also mutual types or styles of decanter centrifuge in different fields. We just take oil drilling industry as an example,there are RFD decanter centrifuge, VFD decanter centrifuge, Disc centrifuge, hydraulic centrifuge, etc.

Decanter Centrifuge
Decanter Centrifuge

Now KOSUN want to share some necessary tips about safety operation regulation for decanter centrifuge. The following content is about the topic of “6 Tips of Safety Operation Regulation for Decanter Centrifuge”.

Decanter Centrifuge
Decanter Centrifuge

Just as we all know that Decanter Centrifuge is one kind of machine revolving at high speed. During operation, revolving drum will generate strong centrifugal force (it is not like the solid control system, to some extent, decanter centrifuge is a core part for a whole solid control system and water based mud unit). To ensure the safety of operators and equipment, the following safety rules shall be strictly followed when using it.

  1. Pay more attention for original Instruction Orders or Steps. Through dynamic balance of revolving drum parts of centrifuge, during assembly, original installation order shall not be changed and there shall be no parts omitted. Threaded connection part shall be installed in place; during assembly, if there is assembly mark, the mark shall be aligned. Before startup, operating pump system shall be inspected and there shall be no water leakage under close state of magnetic valve.
  2. Keep the decanter centrifuge off. Before clamping revolving drum clamp ring and fixing inlet/outlet device and other fastening screws, decanter centrifuge shall not be started.
  3. Before completely stopping revolving drum, any part of equipment shall not be loosened.
  4. During operation, if abnormal vibration of decanter centrifuge is found, power shall be cut off for emergency shutdown. After revolving drum is completely stopped, each part shall be disassembled cleaned and inspected and attention shall be paid to assembly order and position. After the causes of abnormal vibration are found out and removed, reassembly and startup can be carried out. Time interval between re-startup and shutdown shall be more than 4h (This item is also suitable for mud cleaner).
  5. Flame heating or repair welding of main revolving drum parts is not allowed, especially revolving drum body, revolving drum cover and clamp ring.
  6. Use of revolving drum parts and revolving drum parts of other equipment shall not be mixed, even the revolving drum parts with same model.

3 Phase Decanter Centrifuge
3 Phase Decanter Centrifuge

The above 6 tips or we can call it as steps should be kept in our mind, they can help us improve our working efficiency. Just as I mentioned in the post, you could find more information about solids control system, drilling waste management unit, oil recovery unit, and some other solids control equipment, such as mud cleaner, sand pump, vacuum degasser, cutting dryer, etc. In another words, KOSUN could be your better cooperator.

Operating and maintaining process of decanter centrifuge

decanter centrifuge is a very useful equipment for any drilling site. A decanter centrifuge is basically used to dilute the fluid that is extracted from the gas or oil mine. Generally, the liquid that is extracted from a mine is of highly concentrated and coagulated. So, extracting minerals from them is practically impossible.  In order to thin up the extracted fluids, a decanter centrifuge is used. By using the rotational speed of a decanter centrifuge, the highly concentrated are turned into minerals extractable thin liquid.

Decanter Centrifuge

There are three basic designs of decanter centrifuges. The first one is vertically oriented decanter centrifuge, the second one is horizontally oriented decanter centrifuge and finally the third one is conveyor or scroll decanter centrifuge. In the vertically oriented decanter centrifuges, the fluids or solids are gathered vertically.

Vertical decanter centrifuge is very effective for high temperature and high pressure work. A horizontally oriented decanter centrifuge gathers the fluids or solids generated from high rotation in horizontal orientation. A horizontally oriented decanter is very effective for high pressure works as it provides a strong organization due to its horizontal orientation. Lastly, a conveyor or scroll centrifuge is basically a rotating machine inside a bowl.

The operating and maintaining process of a decanter centrifuge:

The first thing that should be done to maintain a decanter centrifuge is to replace any hydraulic suction filter and replace hydraulic returns filter. It is a very important step for the oil and gas drillers. As when the oil or gas drilling goes on both the hydraulic suction filter and the hydraulic returns filter undergo an extensive pressure.  So, there is a huge possibility of both of them to be worn out. So in that sense, both of the filters must be checked regularly and be replaced when it is necessary.

Another important thing that is required to do in order to maintain a decanter centrifuge is greasing the machine.  It is very important. As decanter centrifuge is basically used in a heavy working areas, the machine can easily be stuck or jammed off. In order to avoid that, greasing is very important. Oil lubricated gear box greasing and recirculating oil greasing are two very effective methods for greasing. A very significant task for managing a decanter centrifuge is adjusting speed sensor to it. It is very important just because adjusting a speed sensor enables drillers to control the differential speed.

Beside these above mentioned activities replacing hydraulic motor sensor, bowl belt replacement, scroll belt replacement and regulating the weir plate are some of the steps that should be taken to maintain a decanter centrifuge.

Advantages of Solid Bowl Decanter Centrifuge

Solid Bowl Decanter Centrifuge is used for chemical and industrial separation applications. The Solid Bowl Decanter Centrifuge 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 advantages of the Solid Bowl Decanter Centrifuge:

1.Process flexibility.

Constant separation results, even at fluctuations in the volumetric flow, the process conditions, or the product characteristics

2.Process conditions

-gas-tight, vapor-tight, or pressurized operation

-low vibration levels

-CIP cleaning

-flameproof or explosion-proof standards making the decanter ideal for applications with solvents and hazardous materials

3.Chemical resistance

Materials such as titanium, pure nickel, or Hastelloy provide the security essential in demanding process applications.

4.Low space requirement

-compact design at high specific throughput

-self-contained system, therefore no extra space required for peripheral equipment

5.Low operating costs

Operating consumables (e.g. filter cloths) are not required. No costly downtime for changing consumables.

6.Simple installation

-integration of all necessary functions in one package (e.g. no need for peripheral equipment)

-active support system (no foundations)

Major applications of Solid Bowl Decanter Centrifuge:

-Organic chemicals

-Inorganic chemicals

-Ores and minerals

-Water and wastewater

To know more about Solid Bowl Decanter Centrifugeplease contact us!

Kosun- Solid Control Company