
GN Separation is proud to announce the successful delivery of five GNLW364-FHD Full Hydraulic Drive Decanter Centrifuges to an overseas starch processing facility. These machines are designed to handle high-viscosity, high-concentration materials such as starch slurry, while also meeting stringent food-grade requirements.
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Published: 20 June 2025
GN Separation has recently completed the production of a batch of hydraulic-driven decanter centrifuges, specifically the GNLW364-FHD model, for an overseas starch processing plant. These centrifuges, powered by Viscotherm's renowned hydraulic technology, deliver efficient and sustainable solid-liquid separation, particularly in high-viscosity applications.
How a Hydraulic Decanter Centrifuge Works
A hydraulic decanter centrifuge is a fundamental component in industries that rely on continuous solid-liquid separation. It harnesses centrifugal force to separate suspended solids from liquids based on their density differences. Here's a breakdown of its operation:
- Feed Introduction: The process commences with the introduction of slurry, such as starch slurry, into the rotating bowl through a stationary feed tube.
- Centrifugal Sedimentation: As the bowl rotates at high speeds (typically between 2,000 and 4,000 RPM), centrifugal forces up to 3,000×G propel denser solids towards the bowl's wall, while the lighter liquid forms an inner layer.
- Conveyor Mechanism: A screw propeller, rotating at a slightly different speed than the bowl, transports the settled solids towards the conical end for discharge.
- Phase Separation: Clarified liquid exits through adjustable weirs at the cylindrical end, enabling precise control over separation efficiency.
In hydraulic drive systems, the rotational motion of the bowl and screw is primarily or partially driven by hydraulic motors. Unlike traditional mechanical gearboxes, hydraulic systems offer variable speed control and dynamic torque adjustment, optimizing performance even under fluctuating feed conditions.
Advantages of Hydraulic Drive Systems
The GN centrifuge employs Viscotherm's hydraulic drive system, a hybrid design that integrates hydraulic and mechanical elements. This configuration offers several benefits, especially for high-viscosity and high-concentration materials:
- Stable Torque Output: The hydraulic drive ensures smooth and efficient operation, minimizing vibration and noise while enhancing separation efficiency and stability.
- Accurate Differential Control: The hydraulic differential allows for precise control, even at extremely low differential speeds, making it ideal for applications requiring high separation accuracy.
- Adaptability to Harsh Conditions: With robust heat dissipation and sealing, the hydraulic system operates reliably in high-temperature and high-humidity environments.
- Stable Sealing Performance: The system's sealing design effectively isolates contaminants, preserving oil purity and minimizing downtime due to malfunctions.
- Compact and Lightweight Design: The hydraulic differential is smaller and lighter than mechanical alternatives, reducing stress on main bearings and contributing to the overall longevity of the equipment.
Applications of Hydraulic Decanter Centrifuges
Hydraulic decanter centrifuges are highly versatile and find applications across various industries, including:
- Starch Production: Efficiently separating solids from liquids in starch processing.
- Wastewater Treatment: Removing solids from wastewater to comply with environmental standards.
- Chemical & Pharmaceutical: Ensuring product purity in chemical and pharmaceutical manufacturing processes.
- Mining & Minerals: Separating valuable minerals from ore slurries.
GN Separation's hydraulic decanter centrifuge, with its precise control and robust performance, is an excellent choice for a wide range of high-viscosity applications. For more information about GN's decanter centrifuges or to discuss your specific requirements, please don't hesitate to contact us.
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Published: 20 June 2025
GN Separation has recently finalized the production of two GNLW364 sewage sludge dewatering centrifuges for a leading overseas environmental protection company. These advanced units are engineered to deliver efficient, reliable, and versatile sludge treatment solutions tailored to diverse industrial and municipal applications.
Dual-Motor Drive System with Three-Frequency Control for Precision Operation
The GNLW364 centrifuges feature a dual-motor drive system paired with a three-frequency control cabinet, enabling fine-tuned adjustments to main and auxiliary motor speeds. This setup also regulates the flow rate of the external feeding screw pump, ensuring optimal performance across varying sludge characteristics. By allowing operators to customize operational parameters, the centrifuges achieve consistent dewatering efficiency while adapting to specific project requirements.
Enhanced Durability with Tungsten Carbide Mechanical Protection
To maximize longevity and reduce maintenance costs, GN Separation has integrated high-quality tungsten carbide components into critical areas of the GNLW364 centrifuges. This ultra-hard, wear-resistant material protects the screw blades and solid discharge ports, minimizing wear and extending equipment lifespan. The result is lower downtime and reduced operational expenses for customers.
Advanced Safety Systems for Reliable Operation
Safety is a cornerstone of GN Separation’s design philosophy. The GNLW364 centrifuges incorporate a Variable Frequency Drive (VFD) cabinet integrated with a Programmable Logic Controller (PLC), which continuously monitors motor current. In the event of overcurrent, the PLC triggers an immediate protective response to prevent motor damage. Additionally, customers can opt for vibration and temperature sensors, providing real-time monitoring of machine health and enabling early detection of potential issues.
High Automation and Superior Solids Discharge Performance
Compared to traditional dewatering technologies like screw presses and filter presses, the GNLW364 centrifuges offer superior automation and drier solids discharge. This makes them ideal for municipal sewage sludge treatment—a common application in environmental protection—as well as challenging applications such as oily sludge processing. Their adaptability ensures efficient performance across a wide range of sludge types and conditions.
Meeting Global Demand for Sustainable Waste Management
The overseas environmental company acquiring these centrifuges stands to benefit from their advanced features, including reduced maintenance, enhanced safety, and versatile dewatering capabilities. As global demand for efficient waste management solutions grows, GN Separation remains committed to delivering innovative, reliable equipment to customers worldwide.
For inquiries about sludge dewatering centrifuges or to explore customized solutions, contact GN Separation today.
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Published: 13 June 2025

GN Separation recently delivered its GNLW364 T Series Dewatering Decanter Centrifuge to an overseas environmental protection company, further expanding its global footprint in industrial and municipal sludge treatment. Known for its efficient performance and robust design, the GNLW364 centrifuge is ideally suited for high-demand dewatering applications across various industries.
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Published: 13 June 2025
GN Separation, a leading manufacturer specializing in screening and separation equipment, has recently finalized the packaging of four Stack Vibrating Screens. These screens are now ready for shipment to Turkey, where they will play a crucial role in enhancing operations within the quartz sand industry. The recipient, a well-known mining consultancy firm, is renowned for delivering comprehensive technical consulting and project design services to local mining enterprises.
The Role of Stack Vibrating Screens in the Quartz Sand Industry
The quartz sand industry holds significant importance within the mineral processing sector. It places a high premium on precision, efficiency, and reliability when it comes to extracting and refining high-purity silica products. Quartz sand, a widely used material in industries such as glass manufacturing, foundry casting, and water filtration, requires meticulous screening processes to achieve the desired particle size distribution and purity levels. This is precisely where Stack Vibrating Screens prove to be invaluable, transforming the way quartz sand is processed. In the realm of quartz sand processing, Stack Vibrating Screens are predominantly utilized for wet screening, classification, and dehydration.
Key Features of GN Separation's Stack Vibrating Screen
GN Separation's Stack Vibrating Screen is meticulously engineered to cater to the specific demands of the quartz sand industry. This screening solution offers a host of features, as outlined below:
Advanced Vibration Technology
GN's Stack Vibrating Screen employs a single vibration source, driven by a dual vibration motor, based on the principle of two-degree-of-freedom resonance. This results in linear vibration throughout the entire machine. This unique vibration mode ensures high screening efficiency and a large processing capacity while minimizing energy consumption.
High-Performance Screen Mesh
The screen mesh, crafted from polyurethane, boasts a high opening rate and an extended average lifespan. This not only enhances screening efficiency but also reduces the frequency of screen replacements, thereby lowering maintenance costs and minimizing downtime.
Compact Design with High Processing Capacity
The multi-layer screen box assembly of GN's Stack Vibrating Screen allows for a compact footprint while maintaining a high processing capacity per unit area. This makes it an ideal choice for facilities with limited space.
Robust Construction and Easy Maintenance
The screen box is built with durability in mind, featuring a sandblasted surface treated with heavy anti-corrosion paint and a polyurea resin wear-resistant anti-corrosion layer on the contact surface with the material. This ensures excellent anti-corrosion performance and prolongs the service life of the screen. Additionally, the screen is secured using pulling-bolt components, simplifying maintenance and reducing downtime.
In response to the customer's specific requirements, all four vibrating screens are equipped with a 5-port slurry distribution box. This device allows for the buffer storage of mining slurry and its uniform feeding to each stack of the vibrating screens. The 5-port slurry distribution box is an essential upstream device for the stack vibrating screen on-site.
As GN Separation prepares to dispatch these four advanced Stack Vibrating Screens to its Turkish client, the company eagerly anticipates contributing to the efficiency and productivity of local mining enterprises. For further information on mining application vibrating screens, please do not hesitate to contact GN Separation.
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Published: 06 June 2025

In the realm of sugar production, particularly within European sugar beet processing facilities, effective wastewater management is paramount. The cleaning process of sugar beets generates substantial volumes of wash water laden with organic matter and fine particulates. Addressing this challenge, GN Separation's GNLW764 decanter centrifuges have emerged as a robust solution, optimizing wastewater treatment and enhancing overall operational efficiency.
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Published: 27 May 2025