10 Sets Fully Hydraulic Drive Centrifuge for Drilling Mud to North Africa

Recently, GN Solids Control has successfully completed the production of 10 sets of Hydraulic-driven centrifuges, GNLW363D-FHD, poised to serve an important drilling mud treatment project for a North African company.

2023.10.26 FHD Decanter Centrifuge 2

Bowl Size 360x1270mm
Speed (Separation Factor) 0-3400 RPM (2328G)
Differential Speed 0-70 RPM
Motor Power 45 KW
Drive System Swiss Full Hydraulic Drive
Processing Capacity 200 GPM (45 m³/h)
Differential Speed Torque 4163 N.M
Dimensions (mm) 3000x2400x1860 mm
Weight (KG) 3400 KG

The GNLW363D-FHD is a pinnacle of engineering excellence designed to meet the rigorous demands of both domestic and international clients. It’s particularly suitable for the separation of high-concentration, high-temperature drilling mud.


Here are the essential specifications of the GNLW363D-FHD:

Model GNLW363D-FHD
Bowl Material Duplex Stainless Steel (SS2304/SS2205)
Conveyor Material Stainless Steel (SS304/SS316)
Screw Blade Wear Protection Tungsten Carbide Hard Alloy Inserts
Discharge Port Protection Tungsten Carbide Hard Alloy Lining
Bearing Brand SKF
Hydraulic Drive System Brand Leading Swiss Brand Full Hydraulic Drive
Electrical Control System PLC Intelligent Control
Coating Standard COSCO Kansai Epoxy Zinc-Rich Paint


GN Solids Control takes pride in its position as a professional decanter centrifuge manufacturer. We uphold stringent standards for the selection of raw materials, opting for high-quality centrifugal casting or forging stainless steel materials. When it comes to wear-resistant components, we employ hard alloy protection, ensuring extended durability and peak performance. Our commitment to quality and durability is unwavering, reflecting our dedication to customer satisfaction.

GN has forged a fruitful collaboration with Viscotherm, a world-leading hydraulic system brand. This partnership has resulted in the development of the Full Hydraulic Drive Centrifuge, which meets the highest industry standards. The ROTODIFF hydraulic motor, a high-torque radial piston motor, controls the differential speed between the bowl and scroll, ensuring precise and efficient separation.

It’s worth noting that our centrifuges come equipped with a manual speed-adjustable feed pump. All components of these feed pumps are sourced from renowned German brands and assembled in China, enhancing their durability and reliability. Thanks to our partnership with NETZSCH, we can offer these pumps at a more cost-effective price compared to the official site.


If you have any questions or would like more information about our hydraulic-driven centrifuges or any other equipment, please don’t hesitate to contact us at samuel@gnsolidscontrol.co.

A Brief Guide to GN Vertical Cutting Dryer Installation and Operation

When it comes to drilling operations, especially using OBM as drilling mud, efficiency and safety are paramount. One essential piece of equipment in this industry is the GN Vertical Cutting Dryer. Proper installation and operation of this device can significantly impact your operations’ success. In this blog, we’ll take you through the essential steps to ensure you get the most out of your GN Vertical Cutting Dryer.

Preparation Before Starting:

  1. Initial Installation and Adjustment: Before the first-time use, reinstalling, or resuming operation, ensure the equipment is installed and adjusted correctly.  Take the time to inspect and make necessary adjustments for optimal performance.
  2. Read the Manuals: Knowledge is power. Familiarize yourself with the user manual and the electric control operation instructions attached to the electric control cabinet. These documents hold the key to smooth operation.
  3. Daily Startup Preparation and Inspection:
    • Clean the Environment: Start by clearing the area around the site, ensuring there are no unnecessary tools, parts, or debris near the dryer. A clutter-free workspace is a safe workspace.
    • Belt Tension: Check the tension of the belt to guarantee it’s correctly aligned and functioning.
    • Observation Holes: Take a peek through the upper and lower cylinder observation holes. Ensure no drill cuttings, mud, or foreign objects obstruct the machine. Always start the dryer with no load; this protects the equipment and keeps operators safe.
    • Check Components: Inspect critical components such as the drive cover, upper and lower cylinders, and observation hole covers for secure installation. Double-check screws in rotating parts, inlet/outlet pipelines, and the control cabinet to ensure they aren’t loose.
    • Fluid Supplies: Make sure you have a clean water supply and a reliable source of compressed air for the flushing pipeline.
    • Jog Start: Begin the dryer using the jog function. Keep an eye out for any abnormal vibrations or clashes during this initial stage.

Start and Stop Procedures


  1. Open the air valve of the air knife (if applicable) and turn on the main power supply.
  2. Start the oil pump motor and verify that oil pressure is within normal parameters.
  3. Initiate the solids discharge screw conveyor for the vertical cuttings dryer.
  4. Start the main motor after confirming proper lubricating oil return.
  5. Activate the flushing pump based on the liquid phase’s fluidity (timed or continuous, as required).
  6. Once the equipment operates stably, open the air knife valve and start the feeding screw conveyor. Make sure the feed is stable and uniform to prevent additional vibrations. Keep a close eye on the main motor’s current to prevent overloading.


  1. Halt the feeding screw conveyor for the vertical cuttings dryer.
  2. Open the flushing pump and air knife valve to flush the slurry outlet channel and screen basket for at least 10 minutes.
  3. Stop the main motor.
  4. Turn off the oil pump motor.
  5. Bring the solids discharge screw conveyor to a stop.
  6. Turn off the main power supply and the air source.

Placement of VFD Control Panel (if available):

  • For convenient operation, it’s essential to position the VFD panel within 5 meters (ideally) but no more than 10 meters from the unit. An added rainproof awning ensures smooth operation even in inclement weather.

Cable Specifications:

  • The user should ensure the preparation of cables of the appropriate length, connecting them to the main motor, auxiliary motor, oil pump motor, flushing pump motor, and power supply.
  • Meeting the specified cable standards is crucial.

By following these steps, you can ensure the safe and efficient performance of your GN Vertical Cutting Dryer. Efficiency and safety go hand in hand, and the proper operation of this equipment can make a significant difference in the success of your drilling operations.

The GN Mud Mixing Units is a Key Player in A Mud Mixing Tank

In the intricate world of drilling operations, the efficiency of mud management plays a pivotal role. At the heart of this management lies the drilling mud recycling system, seamlessly orchestrated by the mud recycling tank skid and mud mixing tank skid. Let’s delve into the intricacies of the mud mixing unit, a key player in ensuring a continuous and effective drilling process.

Understanding the Mud Mixing Unit
Positioned at the end of the mixing tank, the mud mixing unit holds a crucial role in preparing and maintaining the drilling mud. Before drilling kicks off, the unit combines clean water and mud materials to create the initial mud blend. As drilling progresses, adjustments are made to the mud properties by introducing new materials such as barite or polymers. The mud mixing unit efficiently draws drilling mud from the mixing tank, incorporating new materials, and then circulates the blend back into the mixing tank. To ensure thorough blending, mud agitators are commonly employed in the mixing tank.

Components of the Mud Mixing Unit
1. Centrifugal Pump (Mixing Pump): This pump serves as the lifeline, drawing drilling mud from the mixing tank and directing it to the hopper unit through a pipe manifold. Driven by an electric motor through a direct shaft connection, it ensures a consistent and efficient shearing process. GN opts for belt driving for enhanced shearing pump efficiency.

GN will Show at PetroTech 2019 this February in India - GN Solids Control

2.Mud Hopper: GN’s Ventri-type mud hopper, connected to the pipe manifold via a T pipe, facilitates the seamless addition of mud materials into the drilling fluids. Constructed with stainless steel for anti-corrosion durability, the hopper includes a bag breaker for rapid powder incorporation. The pipe manifold features a pressure gauge for the operator to monitor the mixing pump’s working pressure.

3. Control Panel: Equipped with an explosion-proof control panel for Zone 1 applications, GN’s mud mixing unit boasts user-friendly operations. With only three buttons – on, off, and emergency stop – the control panel ensures simplicity in operation. Signal lights complement the panel, providing clear indications of ongoing operations.

automatic control panel

Versatility in Installation
GN’s mud mixing unit offers flexibility in installation, accommodating both end-of-mixing-tank and separate small skid mounting options. Additionally, the unit can be designed as a dual hopper dual pump type, providing increased capacity or acting as a contingency measure in case of equipment breakdown.

In the intricate dance of drilling operations, the mud mixing unit emerges as a silent hero, ensuring the seamless flow of drilling mud, and consequently, the success of the entire operation. If you are interested, please contact me at samuel@gnsolidscontrol.co for further information.

GNCD930G is Very Necessary for OBM making and Oil Sludge Treatment

The oil and gas industry is a major contributor to environmental pollution. For Oil-based mud, a vertical cutting dryer is a very important equipment to separate the mud effectively. GN Solids Control is a leading solids control equipment and mud system manufacturer in China, and our vertical cutting dryer model is GNCD930G. And this blog will show the GP model with a fixed speed.

Vertical Cuttings Dryer

Vertical cutting dryers are a type of centrifugal separator that uses a rotating drum to separate solids from drilling fluid. They are designed to be highly efficient and easy to operate.

c1C2Vertical Dryer

This cutter dryer is designed with a hard-faced rotor (HRC 65) with individually balanced flights and rotor assembly for longer life. It also has a specially designed stainless steel screen for better separation, longer life, and easy replacement. The screen is individually balanced and can be replaced without changing the frame.

Besides, It also has a special high-pressure air knife design to clean the basket screen automatically, avoiding screen blinding, especially for high-viscosity mud and water-based mud. It also has an all-around flushing system through specially designed nozzles to avoid the blocking of the liquid discharge channel.

In addition to improving the quality of drilling fluids, GN Vertical Cutting Dryers also help to treat oil waste, Recently I got an inquiry about oil lagoon, and the vertical cutting dryer will help. This is because a stainless steel screen bowl traps “wet” solids and accelerates them up 900RPM with G force to 420G Liquid is forced through the screen bowl openings.

If you have a project like waste management or oil-based mud treatment and need a cutting dryer, please contact me at samuel@gnsolidscontrol.co for more details.

GN Centrifugal Pumps are also Reliable and Easy for Maintenance for Water Pumping.

GN centrifugal pumps, also called sand pumps, are a versatile and reliable type of pump that can be used for a variety of applications, including water pumping.

GN sand pumps are made with high-quality tungsten carbide materials and components with famous brand bearings, and they are designed to operate in a variety of harsh environments. They are also available in a wide range of sizes and configurations, making them suitable for a variety of applications. It is usually used as the feeding pump in a solids control system, and also used as the mixing pump for a hopper, and also very reliable for as a water pump.


For water pumping, here are some of the advantages of using GN centrifugal pumps:

High flow rates: GN sand pumps can deliver high flow rates, making them ideal for applications where large volumes of water need to be pumped.

Low head pressures: GN sand pumps operate at low head pressures, making them ideal for applications where the water is not under a lot of pressure.

Long service life: GN pumps are built to last, and they can provide many years of reliable service.

Convenient for spares replacement: All the spares of GN sand pumps are interchangeable with Magnum pumps

If you are looking for a reliable and versatile water pump, then GN centrifugal pumps are a great option. Here is the specs list of GN centrifugal pumps:

If you have an inquiry about GN centrifugal pumps, please contact me at samuel@gnsolidscontrol.co for more details and a quotation.