Decanter Centrifuge | GN design specific centrifuges according to specific separation tasks and the use of resilient, high-quality materials have improved the performance of the centrifuges.

January 21, 2022

High Speed Tubular Centrifuge Shipped to Europe Client

News from GN company this week: Recently, 1 set of High Speed Tubular Centrifuge have been manufactured and are ready to start serving for an European Client’s project. The equipment includes: GNGQ142 High Speed Tubular Centrifuge, VFD control panel and accessories.

Tubular Centrifuge is also called Tubular Separator. It is a type of fine separation equipment, which is suitable for suspensions with thin concentration, fine particles, and small density difference solid-liquid separation, or liquid-liquid-solid separation. It is an indispensable equipment for pharmaceutical, food, chemical, biological product, fermentation broth, beverages, blood products and other industries. Its working principle is that materials with different specific gravity are subject to different centrifugal forces when rotating at high speed, so as to achieve the purpose of separation.

To make sure theTubular Centrifuge will provide a reliable performance and the parts and components of all the equipment will run smoothly for a long term operation, our technical department, production department and quality control department have paid a lot of attention to the material selection, material preparation, every step of production and the inspection for this set of equipment in each step.

If you need any support about the operation and maintenance of GN’s Tubular Centrifuge, please feel free to contact GN company for our engineers’ best experience and knowledge in the relevant industry. We will do our best to assist your project because just in this way we can establish a stable and long term cooperation. And we can provide on-line support and site instruction for specific situation if needed.

As a leading manufacturer of separation equipment and conveying equipment, GN always pay high attention to the product quality and consider the long-term benefits for our users. We would also like to introduce GN as a professional manufacturer in decanter centrifuge field, GN pays a lot of attention in the selection of raw materials, high-quality centrifugal casting or forging stainless steel materials are used, and for wearing parts, hard alloy protection is used.

By the way, if you are interested in our products, please check the following items of our company on Alibaba:

Decanter centrifuge

3-Phase Disc centrifuge

Sludge dewatering Screw press

January 16, 2022

GN Solids and Liquid Separation Equipment for Canada Dredging Slurry Dewatering

News from GN company this week: Recently, 1 series of Dredging Slurry Dewatering equipment have been manufactured and are ready to start serving for a Slurry Dewatering project of a Canadian customer.

The equipment includes:

2 Double deck Vibrating Screen, GNZS706

1 Desander Unit GNZJ703F-2S

1 Desilter GNZJ703F-12N

2 sets of sludge dewatering large drum Decanter centrifuge GNLW764A-VFD

3 sets of Solid-liquid separation mud tank

8 screw conveyors

4 sand pumps

To make sure these 2 Sets of 1000GPM Drilling Mud Solids Control System will provide a reliable performance and the parts and components of all the equipment will run smoothly for a long term operation, our technical department, production department and quality control department have paid a lot of attention to the material selection, material preparation, every step of production and the inspection for this set of equipment in each step.

GN Solids Control is one of the most famous International Brand for Mud Solids Control System & Drilling Waste Management. GN have the one stop for Solids Control Solution for mud recycling projects.

If you need any support about the operation and maintenance of GN’s Dredging Slurry Dewatering equipment like Decanter centrifuge, Double deck Vibrating Screen, Desilter, Desander Unit, please feel free to contact GN company for our engineers’ best experience and knowledge in the relevant industry. We will do our best to assist your project because just in this way we can establish a stable and long term cooperation. And we can provide on-line support and site instruction for specific situation if needed.

By the way, if you are interested in our products, please check the following items of our company on Alibaba:

Decanter centrifuge

3-Phase Disc centrifuge

Sludge dewatering Screw press

January 8, 2022

2 Sets of 1000GPM Drilling Mud Solids Control System to Shanghai Customer

News from GN company this week: Recently, 2 Sets of 1000GPM Drilling Mud Solids Control System have been manufactured and are ready to start serving for a Drilling Mud Solids Control project of a Shanghai Customer .

GN Solids Control is one of the most famous International Brand for Mud Solids Control System & Drilling Waste Management. GN have the one stop for Solids Control Solution for mud recycling projects.

If you need any support about the operation and maintenance of GN’s equipment like Drilling Mud Solids Control System, please feel free to contact GN company for our engineers’ best experience and knowledge in the relevant industry. We will do our best to assist your project because just in this way we can establish a stable and long term cooperation. And we can provide on-line support and site instruction for specific situation if needed.

By the way, if you are interested in our products, please check the following items of our company on Alibaba:

Decanter centrifuge

3-Phase Disc centrifuge

Sludge dewatering Screw press

December 31, 2021

Centrifugal Mud Pump and oilfield centrifuge for international drilling company

News from GN company this week: Recently, a series of Centrifugal mud pump and oilfield Decanter centrifuge have been manufactured and are ready to start serving for an International Drilling Company, including Solids control centrifuge: 2 sets of GNLW363CG

The number of sand pumps is as follows:

4 units of GNSB4x3C-11J

6 units of GNSB6x5C-13J

6 units of GNSB8x6C-14J

GN Solids Control is one of the most famous International Brand for Mud Solids Control System & Drilling Waste Management. GN have the one stop for Solids Control Solution for mud recycling projects.

To make sure this set of dewatering system will provide a reliable performance and the parts and components of all the equipment will run smoothly for a long term operation, our technical department, production department and quality control department have paid a lot of attention to the material selection, material preparation, every step of production and the inspection for this set of equipment in each step.

If you need any support about the operation and maintenance of GN’s equipment like Centrifugal mud pump and oilfield Decanter centrifuge , please feel free to contact GN company for our engineers’ best experience and knowledge in the relevant industry. We will do our best to assist your project because just in this way we can establish a stable and long term cooperation. And we can provide on-line support and site instruction for specific situation if needed.

By the way, if you are interested in our products, please check the following items of our company on Alibaba:

Decanter centrifuge

3-Phase Disc centrifuge

Sludge dewatering Screw press

December 25, 2021

The methods for maintaining Decanter centrifuge

Decanter centrifuges are often used in severe environment and under high workload, so problems will occur sometimes and the decanter centrifuge has to be serviced or repaired. How can we maintain the centrifuges? Here is your answer:

1. When the decanter centrifuge is in the pre-cooled state, the centrifuge cover must be closed. After the centrifugation is finished, the rotor is removed and placed on the experimental table. The remaining water in the chamber is dried and the centrifuge cover is open.

2. The rotor cover can be placed on the platform of the decanter centrifuge or on the experimental table during pre-cooling. Never float the rotor on the rotor without tightening it, because the rotor cover will fly out and cause an accident!

3. After tightening the rotor cover, be sure to touch the gap between the rotor and the cover with your fingers after tightening. If there is a gap, unscrew it and tighten it again.

4. During the centrifugation process, the operator must not leave the centrifuge room. In the event of an abnormal situation, the operator cannot turn off the power. Press STOP. Fill in the centrifuge record before pre-cooling.

5. Do not use inferior decanter centrifuge spare parts, or use aging, deformed or cracked centrifuge drums.

6. You can leave only after the last routine safety check using a centrifuge on holidays and evenings.

7. When a failure occurs during the operation of the decanter centrifuge, please contact the technical staff in time when the component is damaged.

GN design and manufacture different size of decanter centrifuge for industry separation with 12 years experience. And GN products have been exported to more than 70 countries with reliable quality and service. Welcome to inquire and visit GN and we are looking forward to cooperate with the clients all over the world.

December 17, 2021

Main Factors That Affect The Performance of Decanter Centrifuge

The production capacity of the decanter centrifuge depends on the density difference between the solid and liquid phases and the length of the sedimentation zone. The closer the density difference between the solid and liquid phases and the higher the viscosity of the slurry, the more difficult to separate and settle. In actual production, there are three main factors that affect the separation effect of the decanter centrifuge: the feed temperature, feed rate, and abnormal process conditions.

A. Feeding temperature: The temperature of the slurry can directly affect the viscosity of the mother liquor. Generally speaking, the higher the solution temperature, the lower the viscosity, the thinner the liquid film on the solid phase, and the easier the fine particles to settle. And the liquid in the pores will be less.

B. Feeding rate: Sometimes, large feeding amount will lead to poor separation effect, mainly because the sedimentation time of the particles in the drum of decanter centrifuge is not enough. The premise of achieving the separation conditions designed by the decanter centrifuge is that the time for the solid particles to settle on the drum wall must be less than the residence time of the particles in the drum. The effective residence time of the slurry to be separated in the drum must be guaranteed, So that the solid particles have enough time to settle out. In our practical experience, the separation effect is not good when the feed volume is 1m3 / H for the same material, but when the feed volume is 0.5m3/h, the separation effect will be ideal .

C. Abnormal process conditions: mainly refers to the insufficient crystal content in the feed slurry or the crystals are not crystallized but flocculated, which is very difficult for the decanter centrifuge to obtain the ideal separation effect.

By the way, if you are interested in our products, please check the following items of our company on Alibaba:

Decanter centrifuge

3-Phase Disc centrifuge

Sludge dewatering Screw press

December 11, 2021

Three sets of drilling rig oil-based cuttings processing equipment for Nigerian customer

News from GN company this week: Recently, 3 complete set of drilling rig oil-based cuttings processing equipment have been manufactured and are ready to start serving for an International Drilling Fluids Service Company, the system includes the following modules：

1. Decanter centrifuge: GNLW363C-VFD, 6 sets

2. Cuttings Dryer: GNCD930F-VFD, 3 sets

3. Skid: 6 sets for decanter centrifuge GNLW363C-ZJ and 3 sets of lifting bracket for cuttings dryer GNCD930F-ZJ

4. Screw Conveyor: 15 sets

5. Screw Pump 9 sets

To make sure these equipment will provide a reliable performance and the parts and components of all the equipment will run smoothly for a long term operation, our technical department, production department and quality control department have paid a lot of attention to the material selection, material preparation, every step of production and the inspection for this set of equipment in each step.

If you need any support about the operation and maintenance of GN’s equipment like Decanter centrifuge, Screw Conveyor, Screw Pump and Cuttings Dryer, please feel free to contact GN company for our engineers’ best experience and knowledge in the relevant industry. We will do our best to assist your project because just in this way we can establish a stable and long term cooperation. And we can provide on-line support and site instruction for specific situation if needed.

GN Solids Control is one of the most famous International Brand for Mud Solids Control System & Drilling Waste Management. GN have the one stop for Solids Control Solution for mud recycling projects.

By the way, if you are interested in our products, please check the following items of our company on Alibaba:

Decanter centrifuge

3-Phase Disc centrifuge

Sludge dewatering Screw press

December 3, 2021

Screw Types of Decanter Centrifuges

The screw is the main component of the Decanter centrifuge. Its function is to transport the sediment deposited on the inside of the drum and smoothly discharge the sediment. It is not only the unloading device, but also determines the production capacity, service life and separation effect.

The type of screw is divided into counter-flow type and down-flow type according to the relative movement of liquid and solid in the drum.

The feeding chamber of the counter-flow Decanter centrifuge is located in the middle of the spiral, that is, near the boundary between the drying zone and the sedimentation zone, to ensure that the liquid phase has a sufficient sedimentation distance, but the solid phase can only stay for the time required to pass through the cone. Therefore, a high centrifugal force is required; entering the drum from here will cause the solid particles that have settled in this area to float again due to disturbance, and turbulence and additional vortices will be generated, which will reduce the separation effect.

The down-flow decanter Decanter centrifuge has a feed inlet at the end of the drum, which avoids counter-flow turbulence and ensures that the sediment is not disturbed. The entire length of the decanter centrifuge is settled, expanding the settlement area, and the residence time of the suspension in the machine. So that the separation effect is improved. The prolonged and undisturbed sedimentation can effectively reduce the amount of flocculant used, greatly improve the fluid flow state in the machine, and increase the centrifugal force by increasing the diameter of the drum, so it can significantly reduce the speed and save power consumption. At the same time, reduce noise and extend the life of the machine.

The down-flow screw structure of decanter centrifuge is especially suitable for difficult-to-separate materials with small solid-liquid density difference, poor solid-phase sedimentation performance, and low solid-phase content. However, the filtrate of the down-flow decanter centrifuge is discharged through the skimming tube. The solid particles that are not separated when the filtrate passes through the skimming tube will be separated and deposited in the skimming tube. The skimming tube channel will be blocked after a long time operation, so it needs to be washed regularly.

In recent years, with the increasing requirements for sludge dewatering, efficient screw structures have emerged. For example, weir plate technology, a special baffle is set at the spiral discharge end of the cone section of the decanter centrifuge, which can put the centrifuge in an ultra-deep liquid pool state to increase the slagging force on the mud cake, and only convey the lower sediment, and The sludge with high moisture content in the upper part is trapped on the outside of the crushing cone section to realize dehydration and make the sludge drier.

November 28, 2021

High-G Shaker and Cuttings Dryer for International Oilfield Company

News from GN company this week: Recently, 1 complete set of dewatering system with High-G Shaker and Cuttings Dryer have been manufactured and are ready to start serving for an International Oilfield Company, the system includes High-G Shaker, High-G Shaker, Screw Conveyor, Support Stand.

GN Solids Control is one of the most famous International Brand for Mud Solids Control System & Drilling Waste Management. GN have the one stop for Solids Control Solution for mud recycling projects.

If you need any support about the operation and maintenance of GN’s equipment like High-G Shaker and Cuttings Dryer, please feel free to contact GN company for our engineers’ best experience and knowledge in the relevant industry. We will do our best to assist your project because just in this way we can establish a stable and long term cooperation. And we can provide on-line support and site instruction for specific situation if needed.

By the way, if you are interested in our products, please check the following items of our company on Alibaba:

Decanter centrifuge

3-Phase Disc centrifuge

Sludge dewatering Screw press

November 19, 2021

Analysis of decanter centrifuge from the material nature

There are many types of decanter centrifuges, and each type has different characteristics and scope of application. Therefore, it is a very important issue to properly select the appropriate decanter centrifuge according to certain process requirements and technical conditions. The selection of decanter centrifuge is mainly considered from two aspects. The first is the nature, composition of the separated materials, and the second is the technological requirements and economic rationality of the separation process:

I. Consider from the nature and composition of materials

The primary basis for selection is the type of heterogeneous system that is separated. For example, for the separation of emulsions in a liquid-liquid system, the first consideration is to use a centrifugal separator. For liquid-solid systems, when the liquid phase of the suspension is a loose material with a low degree of solidity, large solid phase concentration, and coarse particle size (> 100um), various filter decanter centrifuges can be considered. Generally speaking, this kind of decanter centrifuge can get drier filter residue and better washing conditions. Secondly, it is necessary to further select the appropriate form for specific conditions.
If the suspension is a material with a large liquid phase viscosity and a fine solid particle size, it is easy to block the filter cloth or screen, but it is difficult to regenerate. Therefore, a centrifugal sedimentation decanter centrifuge should be used. When the solid phase concentration is large (5% to 10%), a spiral discharge sedimentation decanter centrifuge can be used. If the solid phase concentration is less than 1%, a tubular high-speed decanter centrifuge or a chamber decanter centrifuge can be used. If the solid phase concentration is 1% — 5%, a disc decanter centrifuge can be used. The automatic slag-discharging dish decanter centrifuge can obtain flowing concentrated sediment, so it is often used for solid-phase concentration. For liquid-liquid-solid three-phase systems, generally the solid content is not high, you can use a dish decanter centrifuge.

2, from the technical requirements of the separation process

The process requirements of the separation process directly affect the selection of the decanter centrifuge. For example, the separation process requires intermittent or continuous operation. The minimum particle size of the separation, the liquid content of the filter residue, the clarity of the filtrate, the discharge method, whether the solid particles are allowed to be destroyed, and washed Requirements, the length of the operating cycle and whether automatic control is required, the degree of automatic control, etc.
In addition, there are still requirements for sealing, anti-corrosion and explosion-proof.
In short, it is necessary to choose a decanter centrifuge that is inexpensive, applicable (that is, in line with process requirements), simple to manufacture, and easy to maintain. Choose according to the main contradictions that need to be resolved and make economic comparisons. Both technical possibilities and economic rationality must be considered. Of course, according to human operation, there are also manual operation and automatic operation. Users can choose according to their needs.