GN Separation Will Participate in CCME 2025

GN Separation is pleased to announce our participation in The China Coal & Mining Expo (CCME) 2025, which will be held from October 28 to 31, 2025, at the Capital International Convention and Exhibition Center (Shunyi, Beijing). We sincerely invite all our partners and visitors from the mining and industrial sectors to visit Booth A4601 to explore our advanced solid-liquid separation solutions.

As a leading manufacturer of separation and conveying equipment, GN Separation will showcase a selection of our high-performance products designed for the coal mining and mineral processing industries. These include:

  • Large Flip-Flow Vibrating Screen

  • Tailing Dewatering Decanter Centrifuge

  • Underground Coal Mine Slurry Separation System

Large Flip-Flow Vibrating Screen

The GN Large Flip-Flow Vibrating Screen is designed for efficient screening of wet, sticky, and fine materials that are difficult to process with conventional vibrating screens. It adopts a dual-mass vibration system that produces strong elastic shear forces on the screen surface, allowing for the effective loosening and stratification of materials.

Key features include:

  • High Elastic Screen Panels: The polyurethane screen panels stretch and relax continuously under vibration, preventing material blockage and ensuring consistent screening efficiency.

  • Wide Screening Range: Suitable for processing materials from coal, metallurgical ores, construction waste, and other industries.

  • Robust Structure: The screen box and supporting frame are made of high-strength materials to ensure stable operation even under heavy-duty conditions.

  • Efficient Energy Use: The vibration design allows for large amplitude and low dynamic load, improving both screening capacity and operational reliability.

This flip-flow screen is especially effective in handling materials with high moisture and fine particle content, such as coal slime, tailings, and aggregates. By combining high elasticity and efficient separation, it delivers exceptional performance in dewatering and classification processes.

Tailing Dewatering Decanter Centrifuge

GN’s Tailing Dewatering Decanter Centrifuge provides a reliable and continuous solution for separating solids from mining tailings. Through high-speed rotation, solid particles are efficiently separated from the liquid phase, significantly reducing moisture content in the discharged cake. The equipment helps mining plants minimize environmental impact and recover water resources for reuse, aligning with sustainable development goals in the mining industry.

Underground Coal Mine Slurry Separation System

The Underground Coal Mine Slurry Separation System is specially designed for mine environments with limited space and complex conditions. The system integrates screening, desanding, and dewatering functions to separate slurry and solids effectively. It ensures safer and cleaner mining operations by improving water recycling and reducing waste discharge underground.

GN Separation looks forward to meeting you at CCME 2025. Visit Booth A4601 to learn more about our comprehensive solutions for coal and mining applications.
We welcome you to discuss your project needs and explore how GN’s technologies can bring greater efficiency and reliability to your operations.

The Wide Application of Decanter Centrifuges Across Industries

In today’s industrial landscape, decanter centrifuges have become indispensable equipment for solid–liquid separation. With continuous operation, sealed construction, and adaptability to a wide range of materials, they offer efficient, reliable, and environmentally friendly performance across multiple industries. From wastewater management to food processing and energy production, decanter centrifuges are playing a vital role in promoting resource recovery and sustainable development.

1. Municipal and Industrial Wastewater Treatment

One of the most common uses of decanter centrifuges is in wastewater treatment plants, both municipal and industrial. The centrifuge efficiently separates and dewaters sludge generated from various biological and chemical treatment processes. Compared with traditional filtration systems, it offers continuous operation, minimal manual handling, and fully enclosed performance that helps reduce odor and environmental pollution.

2. Oil and Gas Industry

In the oil and gas sector, decanter centrifuges are applied in:

  • Drilling mud solids control, maintaining drilling fluid quality by removing fine particles;

  • Crude oil tank bottom and oily sludge treatment, recovering valuable oil and reducing waste;

  • Waste oil recycling, separating oil, water, and solids for resource reuse.

Their robust construction and ability to handle high-viscosity, abrasive materials make them ideal for demanding oilfield and refinery environments.

3. Mining and Mineral Processing

In the mining industry, decanter centrifuges are used for tailings dewatering, ore slurry thickening, and process water clarification. They help minimize the environmental footprint of tailings ponds and allow efficient water recovery for reuse within the plant. Decanter centrifuges also enable faster drying of concentrates, improving downstream processing efficiency and reducing overall operation costs.

4. Chemical and Pharmaceutical Industries

In chemical and pharmaceutical manufacturing, decanter centrifuges perform precise separation of solids and liquids in reaction, crystallization, and extraction processes. They are commonly used for:

  • Recovery of catalysts or crystal products;

  • Separation of active ingredients and residues;

  • Clarification of fermentation or chemical solutions.

GN Separation’s centrifuges are designed with stainless steel contact parts, CIP cleaning options, and automated control systems, ensuring safe and hygienic operation even under complex process conditions.

5. Food and Beverage Processing

The food and beverage industry relies on decanter centrifuges for hygienic and efficient separation of raw materials. Typical applications include:

  • Clarification of fruit and vegetable juices;

  • Dewatering of starch or plant-based protein slurry;

  • Recovery of animal fats and proteins;

  • Treatment of fermentation residues in breweries and distilleries.

By maintaining consistent separation quality and gentle handling of products, decanter centrifuges help preserve taste, color, and nutritional integrity.

6. Environmental Remediation and Waste Recycling

Decanter centrifuges are increasingly used in environmental protection and waste recycling projects. Applications include oily sludge treatment, soil washing, industrial wastewater recycling, and hazardous waste minimization. Through effective solid–liquid separation, they enable resource recovery and help industries meet stricter environmental regulations.

7. Renewable Energy and Biofuel Production

In the renewable energy sector, decanter centrifuges support biogas, biodiesel, and bioethanol production. They separate digestate or biomass residues, recover valuable liquids, and purify process streams. This not only improves energy efficiency but also contributes to a more sustainable circular economy.

8. Marine and Power Generation

For marine and power generation applications, decanter centrifuges are used to treat bilge water, lubricating oil, and fuel oil, as well as ash pond sludge and cooling water in power plants. Their stable, automatic operation reduces maintenance needs and supports continuous industrial operation.

Conclusion

From municipal wastewater to renewable energy, decanter centrifuges have proven their versatility and efficiency in almost every field requiring solid–liquid separation. Their ability to deliver continuous, high-performance operation under demanding conditions makes them a cornerstone of modern environmental and industrial processes.

At GN Separation, we design and manufacture a full range of dewatering, thickening, and classification decanter centrifuges to meet diverse process needs. With years of engineering experience and global project references, GN Separation is committed to providing reliable and cost-effective separation solutions for our customers worldwide.

GN Separation looks forward to working with you to build a cleaner and more sustainable future.

GN Solids Vacuum Pumps for Efficient Material Transfer

In many industries such as mining, wastewater treatment, tunneling, oil & gas, and food processing, the transfer of solids is an important part of operations. GN Separation’s Solids Vacuum Pump (also called a sludge vacuum pump) provides a practical solution for moving powders, slurries, sludge, and other challenging materials.

What Is a Solids Vacuum Pump?

A solids vacuum pump uses compressed air to create negative pressure for suction and positive pressure for discharge. Since it is powered entirely by compressed air, there is no need for an electrical motor, which allows safe use in environments where explosion-proof equipment is required.

Main Features and Specifications

GN offers three models of Solids Vacuum Pumps—GNSP-10B, GNSP-20B, and GNSP-40B—and can also provide grouped or skid-mounted systems for larger capacities.

Parameter Range / Value
Max Capacity 10, 20, or 40 m³/h
Inlet / Outlet Size 3″ (89 mm) to 4″ (114 mm)
Vacuum Degree Approx. 25 inHg (~ 85 kPa)
Max Suction Distance Up to 50 m
Max Discharge Distance 500 m–1,000 m (depending on model)
Max Solids Content Up to ~ 80%
Max Solids Size 50 mm–75 mm
Air Supply Pressure 550–785 kPa (≈ 80–114 PSI)
Air Consumption ~ 4.3–17 m³/min (150–600 CFM)

The pump can operate in manual or automatic mode, with valve switching between suction and discharge.

Typical Applications

The solids vacuum pump can be used in:

  • Thickener desluging

  • Mining slurry and tailings transfer

  • Tunnel boring machine (TBM) slurry removal

  • Shaft and sump cleaning

  • Oil spill recovery and transfer

  • Drilling cuttings and mud handling

  • Ship and ballast tank cleaning

  • Hazardous waste recovery

  • Bulk transfer of powders and slurries

  • Tank and wastewater sump cleaning

  • Under-belt material cleanup

  • Dredging and pond sludge removal

Points to Consider When Selecting

When evaluating a solids vacuum pump, it is useful to clarify:

  • Required flow rate (m³/h)

  • Maximum solids content in the material

  • Maximum particle size

  • Suction lift height and discharge distance

  • On-site air pressure and air volume

  • Operating mode (continuous or intermittent)

  • Safety requirements (e.g., explosion-proof)

  • Need for automated or manual operation

  • Whether a single unit or a multi-unit system is preferred

Providing this information helps ensure the right selection for the intended application.

Conclusion

GN’s Solids Vacuum Pump offers a practical approach for transferring sludge, slurry, powders, and other solid-containing materials in a wide range of industries. With its air-driven design, solids-handling capability, and flexible installation options, it can be applied to many process conditions.

Efficient Sludge Dewatering with GN Separation: GNLW364 Centrifuge & GNSJY3000 Chemical Dosing Unit

At GN Separation, our mission is to deliver high-performance, reliable, and sustainable solutions for solid–liquid separation. Two flagship pieces of equipment that illustrate this are the GNLW364 sludge dewatering centrifuge and the GNSJY3000 chemical dosing unit. Recently, we successfully deployed these systems in overseas sludge dewatering projects—here’s how they work together to deliver superior results.

GNLW364 Sludge Dewatering Centrifuge

The GNLW364 is a 14-inch bowl, high-speed decanter centrifuge engineered specifically for wastewater and sludge dewatering applications. Some of its key features:

  • Robust Drive System & Control Cabinet: Equipped with a dual-motor drive and a three-frequency conversion control cabinet that allows independent control over the main motor, back drive motor, and feed pump. This ensures optimal performance to match the characteristics of the sludge.

  • Wear Resistance & Materials: Critical parts such as the screw conveyor and discharge ports are protected with tungsten carbide inserts. The bowl assembly is made from duplex stainless steel for both strength and corrosion resistance.

  • Safety & Monitoring: Real-time vibration and temperature sensors, along with PLC-based overload protection, provide continuous and safe operation.

  • Separation Efficiency: The centrifuge is designed for high solids loading and delivers excellent dryness of discharged solids, suitable for municipal and industrial sludge applications.

GNSJY3000 Chemical Dosing Unit

To enhance the performance of the centrifuge, particularly when dealing with ultra-fine solids, GN Separation offers the GNSJY3000 chemical dosing unit. Key aspects include:

  • Purpose & Function: Used to flocculate fine particles that cannot be efficiently removed by centrifugation alone, thereby improving separation and effluent clarity.

  • Flexible Configuration: Designed to handle either liquid or powdered chemicals, with optional configurations for different operating environments.

  • Capacity & Operation: The dosing capacity can be adjusted according to the sludge characteristics and centrifuge throughput. Clients can choose the system configuration based on required dosing rates and safety needs.

  • Integration: The dosing unit works seamlessly with the centrifuge, enabling automated or semi-automated control of chemical addition, leading to more stable operation and reduced chemical consumption.

Combined Workflow: GNLW364 + GNSJY3000 in Sludge Dewatering Projects

  1. Feed Conditioning: Sludge is analyzed for solids content and particle size. If fine particles are present, the dosing unit is engaged to condition the sludge.

  2. Chemical Dosing: Coagulants or flocculants are precisely added through the GNSJY3000 to enhance separation.

  3. Centrifugation: The conditioned sludge is processed by the GNLW364, which captures solids and discharges clarified liquid.

  4. Outcome: Higher dryness of solids, cleaner effluent, reduced transport costs, and improved overall efficiency.

Why Choose GN Separation

  • Customization: Equipment can be tailored to specific feed conditions and project requirements.

  • Durability: Premium materials and wear-resistant protections ensure long service life.

  • Proven Success: The GNLW364 centrifuge and GNSJY3000 dosing unit have already been applied in overseas sludge dewatering projects with reliable results.

If you are considering a sludge dewatering project and require stable performance, high efficiency, and cost-effective operation, GN Separation’s GNLW364 centrifuge combined with the GNSJY3000 chemical dosing unit is the right choice. Contact us to learn more about how we can support your project needs.

GN Separation Delivers GNLW-654 Sludge Dewatering Centrifuge to Europe

We are pleased to announce that GN Separation has shipped a GNLW-654 T-Series Dewatering Decanter Centrifuge to our European client. This high-performing machine will significantly enhance sludge dewatering operations, delivering higher dryness, efficiency, and reliability under demanding industrial conditions.

Introducing the GNLW-654 Dewatering Decanter Centrifuge

The GNLW-654 is part of GN’s T-Series dewatering decanter centrifuges, built with a beach angle of 8.5 degrees.This design increases the length of the cone (beach) section, allowing more extended dewatering area and resulting in drier solid discharge.

Here are some of its key features and specifications:

 

Why the GNLW-654 is Ideal for Sludge Dewatering

 

This model is designedfor heavy-duty dewatering and thickening tasks. Among its advantages:

  • Enhanced Dryness of Solids: The extended beach area and optimized internal geometry lead to better solids discharge dryness.

  • Efficient Handling of Large & Dense Solids: It can process materials with large particle size, high density difference between solid and liquid, and high concentration.

  • Durability & Materials: Key parts like the bowl and shaft caps are made from duplex stainless steel (e.g. SUS2205 or SUS2304) via centrifugal casting, improving corrosion resistance and avoiding issues common with welded structures.

  • Wear-resistance: Solid discharge ports have hard tungsten carbide wear sleeves; screw blades are formed via CNC pressing for higher conveying efficiency and longer lifespan.

  • Operational Flexibility & Monitoring: The machine is equipped with an advanced control panel (VFD, PLC, HMI), real-time monitoring of parameters like vibration, bearing temperature, motor current, etc., plus automatic alarm/protection systems.

Application & Benefits for the European Client

For our European partner, the GNLW-654 will be used to process sludge from municipal and industrial wastewater treatment. Key benefits include:

  • Reduced disposal costs, thanks to much drier solids which are lighter and less bulky.

  • Improved throughput, due to higher processing capacity and better separation of solids & liquids.

  • Lower energy usage, as optimized design minimizes turbulence and mechanical losses.

  • Reduced maintenance downtime, thanks to wear-resistant parts and ease of component removal (e.g. hydraulic disassembly of main bearing).

Final Thoughts

The shipping of the GNLW-654 decanter centrifuge is another example of GN Separation’s commitment to delivering high-quality separation solutions that meet strict performance, durability, and efficiency requirements. We look forward to seeing the machine installed and delivering results for our client in Europe.

If you’d like to know more about how a dewatering decanter centrifuge can help with your sludge treatment challenges, feel free to reach out — we’re happy to share case studies, technical specs, or help you select the right model.

If you like, I can also prepare a version of this blog post with technical diagrams and photos, optimized for your company’s website or LinkedIn.