Recently one batch of separation equipments for dredging slurry separation plant to North America, the equipments list including:

GNLW764A big bowl decanter centrifuge, 2 units, the centrifuge bowl diameter is 30inch, and bowl length is 131 inch, the max speed is 2650rpm, the max G force is 3000G, the max treating capacity is 285m3/h, the typical capacity is 225m3/h, the dewatering capacity is 50m3/h, the main motor is 160KW, and back drive motor is 90KW.

GNZS706F double deck shale shaker, 2 units, top layer with 3pcs screen, 750x900mm; bottom layer with 3pcs screens, 700x1250mm, the total screen area is 4.63m2. 2ea vibration motor 1.94KW drived the double deck shale shaker and produce up to 7.3G vibration force. The vibeation mode is linear motion , the reference treating capacity for drilling fluids is 140m3/h ( 616gpm). The deck angle can be adjusted from -1° to +5°, we can provide CNEX or ATEX or IECEX explosion proof standard for option. The flowrate mentioned is for reference only. The double deck shale shaker can treat the slurry better compared with single deck shale shaker, the slurry will drop into the top layer screen firstly to separate coarse solids, then the bottom layer screen with fine mesh will separate the fine solids, the treated fluids drop into the mud tank. The centrifugal pump feed the slurry to desander, the separation cut point is 45 microns.

GNZS703F-2S desander, 2 units
GNZS703F-12N desilter, 2 units, the fluids treated by desander dropped into the mud tank and the desilter centrifugal pump feed the fluids to desilter , the separation cut point is 15 microns.
Screw conveyor, 12 sets, it is used to transfer the dredging slurry and transfer the discharged solids to cuttings box.

Mud tank and feeding pumps
For more information of dredging slurry separation equipments, pls contact with GN separation.

Recently one unit of GN stack vibrating screen are used for Iron core separation and treatment.
GN stack vibrating screen is suitable for wet screening, classification and dehydration treatment of fine grained materials in mineral processing, coal preparation.

This unit with 2 layers screening, 2 vibration motor (normally from US Martin or Italy Oil brand ) drived the vibrating screen as linear motion. The features of the stack vibrating screen is high screening screen, energy saving, low energy consumption, large processing capacity, simple structure for simple operation, stable and reliable operation, small footprint, low maintenance cost. It installed polyurethane material screen, which is abrasion resistance and longer working life,and it is not easily blocked due to the good elasticity. The shaker deck surface treatment by sandblasting process, heavy anti corrosion paint for good anti corrosion performance.
The main structures of stack vibration screen including vibration motor, polyurethane screen, support frame, rack assembly, receiving chute, screen box, feed box, water spray system.
The total screen deck layer is 2, and total screening area is 4.2m2, total power is 2 x 1.84KW, vibration frequency is 25HZ, screen inclination angle is 17.5 degree, the mesh size opening is 0.045mm to 2mm, each screen dimension is 700x1250mm, each shaker with 6pcs screens. The dry ore discharge capacity is 5 ~12m3/h. Except for 2 layers screen deck, we can also produce 3 layers screen deck, 4 layers screen deck, 5 layers screen deck.

Except for stack vibrating screen, GN separation also provide high frequency vibrating screen, dewatering vibrating screen, classification vibrating screen, large linear vibrating screen, large Banana vibrating screen, large flip flow vibrating screen. The polyurethane screens are also produced by GN solids control, for better delivery time and adaptability. If you need a solution for vibrating screen, pls contact with GN separation for more information.

Recently one unit of oil sludge treatment decanter centrifuge with screw conveyor are ready for shipment to overseas client.

The model of oil sludge treatment decanter centrifuge is GNLW554ET-VFD, the VFD decanter centrifuge technical specification is as below:
Bowl diameter is 22 inch, the bowl length is 91 inch, the max speed is 3150rpm, the max G force is 3051G, the typical speed is 2800rpm, the typical speed is 2412G, the max treating capacity for water is up to 600gpm, and the typical capacity is 475gpm, when used for oil sludge treatment, the capacity with chemical additives is 88 gpm, with main motor 90KW and back drive motor 45KW. The treating capacity will be different based on different materials. Not only for 22 inch bowl centrifuge, GN also produce 9 inch bowl, 14 inch bowl, 18 inch bowl, 30 inch bowl decanter centrifuge for different applications, for 22 inch bowl diameter, we also have GNLW553-VFD centrifuge for oil sludge treatment. Their bowl length and cone angle is different which is designed as per treatment target. Necessary chemicals should be added to improve the separation efficiency of oil, water and solids.

The screw conveyor is used to transfer the discharged solids from centrifuge discharge trough to waste collection box, also it can be used to transfer drilling cuttings and other type fluids. The screw flights are made of wear resistant and thicker manganese steel, also the sprayed wear resistant coating can be optional for longer working life. The reinforce frame provide high strength to the complete screw conveyor for better installation. NSK OR FAG brand bearing provide longer service life, and the bearing seat is made of aluminum casting for steady working.
If you need oil sludge treatment decanter centrifuge and complete oil sludge treatment system, pls contact with GN solids control.

GN Solids America will participate in 2023 Offshore Technology Conference (OTC 2023). The exhibition information is as below:
Exhibition Name:Offshore Technology Conference 2023
Exhibition location: NRG Park, Houston, TX, USA
Exhibition time: May 1st to 4th, 2023
Exhibition Stand No.: NRG Center 4047
Official website:

OTC had been held over 50 years since 1969 at NRG park ( formerly as Reliant Park) in Houston. OTC has expanded technically and globally with OTC Brasil and OTC Asia. If you would like to know more and talk more about GN Solids products, welcome to visit GN Solids America located at 6710 Windfern Road, Houston, TX 77040.

GN Solids America will show our lastest technology and core equipments, and take this opportunity to meet our valuable clients and introduce us to more companies who required a solids control/ drilling waste management/ oil sludge treatment/ waste water treatment/ solids liquid separation solution.
What products will GN show at OTC 2023?
1. ViST vacuum screen technology
ViST vacuum screen technology is mainly for recycle fluids and reduce waste during drilling. The purpose is to maximize the volume of recovered and reused fluids and provide much dryer cuttings. For the long term operation, ViST technology can save drilling cost and reduce waste management cost.
2. Shaker screen, not only for GN own shale shaker, but also replacement screens for other brand shale shaker.

3. Linear motion shale shaker, with 4 panel shaker screens
4. Drilling fluids cleaning decanter centrifuge, GN can provide 9 inch, 14 inch, 18 inch, 22 inch, 30 inch bowl centrifuge can produce different G force for your requirement.
5. Solids /sludge transfer vacuum pump, it can be used for many different applications, to transfer drilling mud, waste mud, waste solids, oil sludge, animal waste, sand, vessel bottom clean mud, hazardous waste, and dredging slurry, etc.

Recently one set of containerized vertical cuttings dryer system and containerized drilling fluids treatment decanter centrifuge unit are ready for shipment to overseas mud company for OBM drilling cuttings treatment. The system configuration is as below:

1. vertical cuttings dryer module including: GNCD930G vertical cuttings dryer, container to install the equipments inside it, screw conveyor which is used to collect drilling cuttings and transfer to vertical cuttings dryer, screw conveyor to collect the discharged cuttings from vertical cuttings dryer discharge port and transfer it to waste collection box, flushing pump for vertical cuttings dryer, lifting device for vertical cuttings dryer screen basket replacement, transfer tank, etc. All of the equipments are installed in the container with windows and doors. The purpose is for fast installation and convenient transportation, also it can meet the requirement for cold weather area use in Winter.

2. Decanter centrifuge module including: GNLW363D-VFD vertical cuttings dryer, container with window and doors, decanter centrifuge feeding pump, screw conveyor to collect the discharged solids from centrifuge discharge port and transfer to waste collection box. If without the container with special Insulation layer, the project in the area with low temperature in Winter will have to stop and wait till the fluids be unfreezed, the customized design can meet their requirement in special conditions.

Except for containerized vertical cuttings dryer and decanter centrifuge system, GN solids control can also provide skid mounted drilling waste management system for oil based mud drilling waste treatment. The features of skid mounted drilling waste management system is convenient operation, convenient transportation, high efficiency, economic cost. It can be lay on the drilling rig besides solids control system, or it can be installed in the drilling waste treatment facility, the screw conveyor system can be installed flexibly according to the layout and space limit.