Month: July 2026

GN SOLIDS CONTROL is pleased to announce the successful application of a full hydraulic drive decanter centrifuge in a diamond core drilling project in Australia. Designed for challenging drilling fluid management conditions, the GN hydraulic drive centrifuge provides reliable solid-liquid separation performance, especially for heavy mud applications and demanding operating environments.

The GN full hydraulic drive centrifuge is jointly developed with a leading Swiss hydraulic drive system supplier. The advanced hydraulic system uses two independent oil circuits to drive the centrifuge bowl and scroll conveyor separately, allowing operators to adjust bowl speed and differential speed flexibly according to changing drilling conditions.

One of the key advantages of the hydraulic drive configuration is its excellent adaptability in high-temperature environments and heavy drilling fluid applications. Compared with conventional drive solutions, the system provides stable torque output, improved operational flexibility, and easier parameter adjustment during continuous operation. The compact single-skid design also simplifies transportation and rig-up at remote drilling locations.

To ensure long-term reliability, the centrifuge features high-strength Duplex stainless steel bowl construction, stainless steel screw components, and tungsten carbide protection on critical wear areas. Equipped with SKF bearings, PLC smart control, and a reliable Swiss hydraulic drive system, the unit delivers stable performance under abrasive drilling conditions.

Through advanced hydraulic technology and robust mechanical design, GN SOLIDS CONTROL continues to provide customized solids control solutions for global drilling projects. This successful application in Australia demonstrates GN’s commitment to delivering efficient and reliable centrifuge systems for specialized drilling operations worldwide.

GN SOLIDS CONTROL shale shaker series is engineered to provide reliable solids separation performance in demanding drilling environments. As the first stage of the solids control process, the shale shaker plays a critical role in maintaining drilling fluid quality, improving downstream equipment efficiency, and reducing overall operating costs.

To ensure long-term structural reliability, GN applies advanced manufacturing processes including post-weld heat treatment on the shaker deck. This process effectively reduces welding stress and enhances resistance against continuous vibration and high-G operation, helping the equipment maintain stable performance during intensive drilling activities.

Maintenance efficiency is another key advantage of GN shale shaker design. The mechanical ratchet screen tensioning system allows operators to install and replace screens quickly while maintaining uniform clamping force. The use of durable nylon wedge blocks and high-quality polyurethane sealing materials provides excellent resistance against corrosion, abrasion, and chemical exposure in both oil-based and water-based mud applications.

For harsh operating conditions, the shaker is equipped with a reliable explosion-proof control cabinet and high-performance OLI vibration motors from Italy, ensuring safe and stable operation in demanding environments.

With adjustable shaker deck angles, flexible discharge configurations, and pre-tensioned screens, GN shale shaker systems offer improved adaptability to changing drilling conditions. By combining robust construction, easy maintenance, and operational flexibility, GN SOLIDS CONTROL continues to deliver efficient solids control solutions that help customers enhance drilling performance and maximize equipment uptime.

As large-scale mineral exploitation expands across domestic mining sites, traditional gravity thickening tanks can no longer meet high-efficiency, low-cost slurry concentration demands. GN Separation has rolled out its flagship GNLW764 decanter centrifuge with a 30-inch (764 mm) bowl diameter, tailor-made for continuous mining slurry thickening and solid-liquid separation, delivering outstanding throughput and stable dewatering performance for medium-to-large mineral processing plants.

The 30-inch bowl stands as GN’s largest standard decanter model, engineered to solve core pain points in mining slurry treatment. Unlike small and medium centrifuges with limited processing volume, its oversized rotary bowl creates a broader centrifugal force field and larger settling area, supporting ultra-high continuous feed flow. High G-force accelerates sedimentation of fine mineral particles within seconds, separating concentrated solid sludge and clarified water simultaneously through independent discharge outlets. The adjustable differential speed between the bowl and screw conveyor ensures uninterrupted 24/7 automatic operation, cutting manual labor input drastically compared with intermittent filter presses or settling ponds.

Durability against abrasive mining slurry is the core design priority. The entire bowl adopts centrifugal-cast duplex stainless steel, featuring strong mechanical strength and acid-alkali corrosion resistance to withstand long-term contact with mineral slurry containing sharp solid particles. All screw flight surfaces and solid discharge ports are covered with replaceable tungsten carbide tiles, the industry’s top wear-resistant material, which extends service life by over three times and lowers frequent spare part replacement costs. Reinforced structures on vulnerable zones further reduce downtime for maintenance in harsh mining environments.

Equipped with full VFD intelligent control, this 30-inch decanter enables on-site operators to adjust bowl rotation speed, differential torque and pond depth flexibly based on fluctuating slurry solid content. Such customized parameter tuning maximizes slurry concentration efficiency, generating high-density underflow that slashes downstream transportation volumes and logistics expenses. Meanwhile, clear overflow water can be recycled back to mineral processing lines, realizing closed-loop water circulation and reducing mine water consumption and discharge pressure.

Compared with conventional thickening equipment, GN’s 30-inch decanter boasts a compact footprint without occupying massive land for settling tanks. It produces consistent concentrated slurry quality and recovers more valuable fine minerals lost in traditional gravity separation. For domestic mining operators, one single large-bowl centrifuge can replace multiple small units, simplifying system layout and cutting overall investment. With rigorous factory testing and successful on-site commissioning at multiple domestic mining projects, GN’s 30-inch decanter centrifuge proves a reliable, cost-effective solution for modern slurry concentration. As a full-spectrum separation equipment manufacturer covering 9-inch to 30-inch bowl sizes, GN continues to customize heavy-duty centrifuges to help mines boost productivity, control operational costs and advance sustainable mineral resource utilization.

GN Solids Control has successfully provided the GNTBM-500B slurry separation system for a tunnel boring machine (TBM) project in the Middle East. Designed for efficient slurry treatment and solid control, the system helps contractors maintain stable excavation performance while reducing waste disposal costs.

The GN GNTBM-500B slurry separation system is engineered to separate solids from excavated slurry through a multi-stage treatment process. The slurry generated during TBM operations is first transferred to the system by a slurry pump and passes through a shale shaker for primary separation. Larger particles are removed, while finer slurry enters the treatment tank for further processing.

The processed slurry is then pumped into hydrocyclones, where centrifugal force separates heavier solids from the liquid phase. The separated solids are discharged for further drying, while the cleaned slurry returns to the system for continuous circulation and reuse. An automatic liquid level control system helps maintain stable operation and improves treatment efficiency.

For TBM tunneling projects in challenging environments, the GN GNTBM-500B provides reliable slurry management, efficient solid removal, and reduced fluid consumption. This successful application in the Middle East demonstrates GN Solids Control’s capability to deliver customized slurry separation solutions for global underground construction projects.

GN Solids Control recently supplied a set of solids control equipment, including a vacuum degasser and shale shakers, for a valued client in the Middle East. The equipment will be used in an oilfield drilling fluid treatment system to help improve mud performance, reduce drilling risks, and ensure stable operation under demanding site conditions.

In drilling operations, drilling fluid plays a critical role in carrying cuttings, cooling the drill bit, maintaining wellbore stability, and controlling formation pressure. However, when drilling fluid returns from the wellbore, it often contains drilled solids, gas, and other unwanted contaminants. If these are not removed efficiently, they may affect mud properties, reduce drilling efficiency, and increase operating costs. Therefore, reliable solids control equipment is essential for modern drilling projects.

The shale shaker is the first-stage solids control equipment in a drilling mud system. GN shale shakers are designed to remove large drilled cuttings from the returned mud before the fluid enters downstream equipment. With high vibration strength, durable screen panels, and a robust structure, GN shale shakers provide efficient separation performance and stable operation. The equipment is suitable for harsh drilling environments and can help reduce the load on subsequent solids control equipment.

For this Middle East project, GN shale shakers are built with a heavy-duty frame, reliable vibration motors, and user-friendly operation features. The shaker deck angle can be adjusted according to site conditions, helping operators achieve better balance between solids discharge and liquid recovery. GN composite frame shaker screens are also available to support longer screen life and lower maintenance cost.

In addition to shale shakers, GN supplied a vacuum degasser for the client’s drilling mud system. The vacuum degasser is mainly used to remove entrained gas from gas-cut drilling fluid. If gas remains in the mud, it may cause mud density fluctuation, pump cavitation, inaccurate mud weight measurement, and potential safety risks. By removing gas effectively, the vacuum degasser helps restore mud density and improves the performance of the entire circulation system.

GN vacuum degasser adopts a self-suction design and does not require an additional feeding pump in many standard applications. The drilling fluid is drawn into the degassing chamber under vacuum, where gas is separated from the liquid phase and discharged safely. The treated mud then returns to the active mud system for reuse. This design helps simplify system layout and reduce energy consumption.

The Middle East oil and gas market has strict requirements for equipment reliability, safety, and environmental performance. GN solids control equipment is widely used in oilfield drilling, workover, trenchless drilling, and waste mud treatment projects. With rich manufacturing experience and international project references, GN is able to provide customized solids control solutions according to different drilling conditions, mud properties, and client requirements.

The successful supply of GN vacuum degasser and shale shakers to this Middle East client once again demonstrates GN’s capability in providing practical, reliable, and cost-effective drilling fluid treatment equipment. GN will continue to support global drilling contractors and oilfield service companies with high-quality solids control equipment and professional technical service.

In potato processing plants, slice washing generates significant volumes of wastewater containing suspended starch solids. Discharging this water without treatment wastes both a recoverable byproduct and a valuable water resource. A recent GN shipment successfully brought  a solution to this issue by using decanter centrifuge.

GN supplied a decanter centrifuge sized for the facility’s throughput. The unit operates on the counter-current principle, with the bowl and screw conveyor rotating at differential speeds controlled by a variable frequency drive(VFD). This arrangement allows the separation parameters to be adjusted as the feed characteristics vary with production rates. The bowl length-to-diameter ratio, exceeding 3.0, provides sufficient residence time for fine starch particles to settle out of suspension.

Several design features make this installation practical for food processing duty. The bowl cylindrical and conical sections are manufactured from Duplex Stainless Steel 2304, with other wetted parts in SS304—materials selected for corrosion resistance and cleanability. Tungsten carbide tiles protect the screw conveyor at wear points, extending service intervals. The PLC-controlled VFD cabinet provides consistent operation with minimal operator attention.

This installation illustrates a broader capability: GN supplies decanter centrifuges for starch recovery from potato, wheat, corn, and root crop processing, with models available for different capacity ranges. For this customer, the result is reduced water consumption, recovered product value, and a separation process that runs with minimal supervision.