Monthly Archives: November 2025

Four GNLW554-VFD Dewatering Centrifuges Set for Shipment to Overseas Sewage Treatment Plant on 28 November 2025

We’re thrilled to announce that four GNLW554-VFD dewatering centrifuges are primed and set for dispatch to an overseas sewage treatment plant on 28 November 2025. These centrifuges are purpose-built to streamline sludge separation and boost the overall efficiency of wastewater treatment operations at the plant, offering adaptable solutions to tackle a wide array of sludge conditions.

Cutting-Edge Features for Peak Performance

The GNLW554-VFD dewatering centrifuge boasts a variable frequency drive (VFD) system, a game-changer in centrifuge technology. This feature grants precise and flexible control over the bowl speed, enabling the centrifuge to effortlessly adjust to varying sludge characteristics and specific operational demands. The centrifuge drum, crafted from duplex stainless steel, is a testament to durability. It significantly bolsters the machine’s strength and offers exceptional resistance to corrosion, ensuring it can withstand even the harshest of environments and deliver long-lasting performance.

Additionally, the slag discharge ports are outfitted with tungsten carbide wear-resistant liners. These liners are masters at handling abrasive sludge, minimizing wear and tear on crucial components and extending the centrifuge’s service life, thus reducing long-term operational costs.

Optional Remote Monitoring: Elevating Efficiency

To take operational efficiency to new heights, these centrifuges come with optional remote monitoring interfaces. These interfaces seamlessly integrate with the plant’s existing automation system, giving operators real-time access to performance data. With this information at their fingertips, operators can swiftly make necessary adjustments to operational parameters and plan maintenance tasks in a more organized and convenient way. This feature also fosters smoother coordination with other equipment in the wastewater treatment process, leading to an overall improvement in plant performance.

Versatility in Handling Diverse Sludge Types

Engineered with versatility in mind, these centrifuges can handle a broad spectrum of sludge types, from municipal sewage sludge to industrial wastewater sludge. Their substantial throughput capacity plays a pivotal role in reducing sludge volume and supporting downstream treatment processes. The VFD control system ensures a gentle start-up and shutdown, which not only contributes to operational stability but also minimizes mechanical stress on the equipment, reducing the likelihood of breakdowns and associated maintenance expenses.

Compact and Modular Design: Easy Installation Anywhere

The compact and modular design of these centrifuges makes installation a breeze. They can be arranged in various layouts, making them suitable for both newly constructed and existing treatment facilities. Our dedicated engineering team has collaborated closely with the client to customize the centrifuges to meet project-specific requirements. This includes tailoring the structural design, fine-tuning operational parameters, and integrating optional remote monitoring capabilities to guarantee optimal performance and seamless integration with the plant’s existing systems.

Rigorous Quality Control: Ensuring Reliability

All four centrifuges have undergone a stringent manufacturing and inspection process, adhering to established quality standards. Throughout production, every detail has been scrutinized to ensure the highest level of quality and reliability. With the units now ready for shipment, this project underscores our unwavering commitment to providing dependable and adaptable equipment for a wide range of international wastewater treatment applications.

Anticipated Impact on the Sewage Treatment Plant

The arrival of the four GNLW554-VFD dewatering centrifuges is expected to have a profound impact on the plant’s sludge handling capabilities. They will help maintain consistent and efficient operations, significantly reduce sludge volume, and contribute to broader environmental and wastewater treatment goals. This delivery further solidifies our dedication to supplying high-quality solutions that empower treatment facilities to achieve stable performance while meeting ever-evolving operational and environmental requirements. We eagerly await the positive transformation these centrifuges will bring to the plant’s operations and the environment at large.

4 Units GNLW554-VFD Dewatering Centrifuge Ready for Overseas Sewage Treatment Plant

GN Separation is pleased to announce that four units of GNLW554-VFD dewatering decanter centrifuges are now prepared for shipment to an overseas sewage treatment facility. These high-capacity machines are engineered to enhance sludge dewatering efficiency, strengthen wastewater treatment performance, and offer the plant greater flexibility in managing varying sludge conditions. Continue reading →

GN Ships 13 Units of 5-Deck Stack Vibrating Screens for Ilmenite Ore Classification

GN Separation is thrilled to share the news of the successful dispatch of 13 five-deck stack vibrating screens. These screens are destined for a significant mineral processing project that focuses on the grinding and classification of ilmenite ore. The equipment, as vividly showcased in the project images named “Frequency Stack Screen” and “Stack Vibrating Screen for Ilmenite,” is set to be installed in the customer’s fine classification circuit. Its primary role is to guarantee stable control over particle sizes and to elevate the overall efficiency and performance of the entire processing operation.

Visual Representation of Equipment

Fig.1 High Frequency Stack Screen
This image provides a clear view of the high – frequency stack screen, highlighting its intricate design and compact structure that are essential for its efficient functioning in the classification process.

Fig.2 Stack Vibrating Screen for Ilmenite
The second image offers a detailed look at the stack vibrating screen specifically designed for ilmenite ore. It showcases the features that make it well – suited for handling the unique characteristics of this type of ore.

Tailored Design for Specific Applications

This particular batch of equipment has been meticulously engineered for the fine classification of ilmenite slurry within a closed – circuit grinding system. Each unit boasts a compact five – deck structure, a design innovation that allows for multiple layers of screening to take place within a single machine frame. This not only maximizes the screening surface area relative to the overall footprint of the equipment but also makes it an ideal solution for facilities where installation space is at a premium and requires careful planning. When compared to conventional screening approaches, the multi – deck arrangement offers a more efficient use of equipment layout, leading to a more streamlined and organized process flow within the plant.

Focus on Key Performance Factors

During the design and manufacturing phases, GN has placed a strong emphasis on several critical factors. Stability is of utmost importance to ensure that the equipment operates consistently without any unexpected fluctuations. Screening accuracy is another key aspect, as precise classification is essential for the subsequent stages of the mineral processing. Additionally, the equipment has been designed to be adaptable to various feed conditions, which can vary depending on the source and nature of the ilmenite ore. The high – frequency vibration system is a marvel of engineering, specifically developed to support the consistent stratification of fine particles. This helps in maintaining a stable cut size, which is crucial for achieving uniform classification results. To withstand the abrasive nature of ilmenite ore, the structure of the equipment is constructed using high – quality abrasion – resistant materials. Moreover, key components have been carefully configured to ensure durability during continuous operation, minimizing the need for frequent repairs and replacements.

Significance in Grinding Circuits

In the context of grinding circuits, precise classification plays a pivotal role in determining the overall performance of the process. The five – deck stack vibrating screen serves a vital function by separating fine particles, which are ready for downstream concentration processes, from coarser material that requires further grinding. A stable classification process has far – reaching benefits. It enhances the grinding efficiency by ensuring that the grinding equipment is only processing material of the appropriate size. It also improves the management of the circulating load, which is the amount of material that is recirculated back to the grinding mill for further processing. Furthermore, a predictable feed size distribution is achieved, which collectively contributes to a smoother and more efficient production flow in ilmenite beneficiation.

Ease of Maintenance and Longevity

To ensure the long – term and trouble – free operation of the equipment, GN has incorporated a modular screen panel design. This innovative design allows for quick and easy replacement of screen panels when they wear out or need to be changed for different processing requirements. Additionally, the vibration system and distribution manifold have been strategically arranged to minimize downtime during routine service operations. This means that maintenance tasks can be carried out more efficiently, reducing the overall impact on the production schedule and ensuring that the equipment remains operational for longer periods.

Stringent Quality Assurance

Before being shipped to the customer, each of the 13 units underwent a rigorous series of factory tests. These tests included comprehensive checks on vibration performance to ensure that the equipment vibrates at the correct frequency and amplitude for optimal screening. Structural inspections were carried out to verify the integrity of the equipment’s frame and components, ensuring that it can withstand the stresses and strains of continuous operation. Assembly verification was also conducted to confirm that all parts are properly installed and aligned. GN’s quality control procedures strictly adhere to internal standards that have been specifically developed for mineral separation equipment. This ensures that every machine delivered to the customer meets the project’s exact technical requirements, providing peace of mind and confidence in the equipment’s performance.

GN Separation’s Unwavering Commitment

The deployment of these stack vibrating screens is a testament to GN Separation’s unwavering commitment to providing top – notch equipment solutions for mineral classification and fine particle processing. With a wealth of experience in screening, solid – liquid separation, and mineral concentration support systems, GN has established itself as a reliable and innovative player in the industry. The company strives to deliver equipment that not only meets but exceeds operational expectations across projects of all scales, whether it’s a small – scale pilot project or a large – scale industrial operation.

Ongoing Support and Future Plans

GN Separation will continue to provide comprehensive support to the client throughout the entire lifecycle of the project, from the initial installation phase to the commissioning and subsequent operational phases. The company’s team of experts will be on hand to offer technical assistance, troubleshooting, and optimization advice to ensure that the equipment operates at its full potential. Looking ahead, GN remains focused on upgrading its product line by incorporating the latest technological advancements. The company is also actively developing new technologies for fine classification to stay at the forefront of the industry. GN aims to serve a wide range of mineral processing industries, including ilmenite, zircon, silica sand, and other industrial minerals, providing customized solutions to meet the unique needs of each client.

For more in – depth information about GN’s stack vibrating screens and mineral separation solutions, please don’t hesitate to reach out to our technical team or visit our product center. We are always ready to assist you and provide you with the best possible solutions for your mineral processing requirements.

GN 13 Units 5-Deck Stack Vibrating Screen for Classification of Ilmenite Ore

This week, GN Separation successfully completed the assembly and factory testing of 13 units of 5-Deck stack vibrating screens. These units, specifically engineered for high-efficiency ilmenite ore screening, are currently undergoing final inspections before being dispatched to a major domestic ilmenite mining site next month. Continue reading →

GNLW224 Dewatering Centrifuges Ready for Overseas Client FAT

This week, GN Separation marked a significant milestone by successfully finishing the assembly of four GNLW224 decanter centrifuges, along with their corresponding polymer dosing units, at its manufacturing facility. These newly assembled units are scheduled to go through a rigorous final inspection and acceptance test, which will be carried out by an overseas client next week.

Product Profile

The GNLW224 holds the distinction of being the smallest-capacity model in GN Separation’s extensive range of decanter centrifuges, specifically designed for wastewater treatment applications. It is a masterpiece of engineering, crafted to deliver consistent and reliable performance even in confined spaces. With a maximum rotational speed of 5,000 RPM, this centrifuge is highly efficient in separating solid and liquid phases from a diverse array of industrial and municipal wastewater streams.

Each centrifuge is outfitted with a state-of-the-art 3-variable-frequency drive (VFD) control cabinet. This cutting-edge feature grants operators the ability to precisely adjust critical parameters, such as bowl speed, differential speed, and feed pump flow rate. By making these fine adjustments, operators can tailor the processing conditions to suit the unique characteristics of the materials being treated and meet specific operational requirements.

Integrated Polymer Dosing Units: Elevating Efficiency

To enhance the overall efficiency of the wastewater treatment process, the GNLW224 centrifuges are paired with GN Separation’s polymer dosing units. These units are engineered to accurately introduce flocculating agents into the wastewater stream. The addition of these agents through chemical conditioning encourages the aggregation of particles, which significantly improves the effectiveness of separating suspended solids during centrifugation. The synchronized operation of the centrifuges and dosing systems enables end-users to achieve higher solid-liquid separation rates and produce cleaner effluent. This not only lightens the load for downstream processing but also reduces the environmental footprint.

Compact Yet Sturdy Design

The GNLW224 is designed with a compact footprint, making it easy to integrate into existing plant layouts without the need for extensive and costly modifications. This is a major advantage for facilities that are looking to upgrade their outdated equipment or expand their capacity within limited space. Additionally, its robust construction, which incorporates corrosion-resistant materials and wear-resistant components, ensures long-term durability. It can withstand harsh operational conditions, including high-temperature environments and those involving abrasive sludge, without compromising performance.

Details of the Upcoming Client Inspection

The upcoming client inspection will be a comprehensive process that covers various aspects of the assembled units. It will include verifying rotational speeds, checking water test flow rates, measuring vibration levels, and monitoring the rise in main bearing temperature, among other parameters. GN Separation’s technical team will collaborate closely with the client’s engineers throughout the inspection. They will showcase the system’s capabilities and address any specific concerns the client may have regarding the integration of the new equipment with their existing infrastructure.

Market Standing and Future Outlook

In recent years, there has been a consistent rise in demand for compact and energy-efficient wastewater treatment technologies. This trend is being fueled by stricter environmental regulations and the rapid industrialization of emerging markets. GN Separation’s GNLW224 decanter centrifuge is well-placed to capitalize on this market opportunity. It offers a cost-effective alternative to larger and more complex systems without sacrificing performance. With production lines now ramping up to meet the anticipated demand, GN Separation is strengthening its position as a formidable competitor in the global wastewater treatment equipment sector.

GNLW364-VFD Decanter Centrifuge: Engineered for Overseas Pharmaceutical Wastewater Treatment

This week, GN Separation completed the assembling of a batch of GNLW364 decanter centrifuges, destined for shipment to an overseas pharmaceutical facility to support its wastewater treatment operations. This delivery underscores GN’s commitment to providing tailored separation solutions for the global pharmaceutical industry’s evolving environmental needs.
​
The Indispensable Role of Decanter Centrifuges in Pharmaceutical Wastewater Treatment​
Pharmaceutical production processes generate highly complex wastewater matrices, characterized by a diverse mix of organic solvents, heavy metal ions, residual active pharmaceutical ingredients (APIs), and biological contaminants. These streams pose significant treatment challenges due to their variable composition, high chemical oxygen demand (COD), and strict regulatory discharge requirements. Decanter centrifuges emerge as a cornerstone technology in addressing these challenges, utilizing high-speed centrifugal force to achieve efficient solid-liquid separation—even for feed streams with fluctuating particle sizes, solid concentrations, and viscosities.
​
For the pharmaceutical industry, where precision, reliability, and compliance are non-negotiable, decanter centrifuges deliver multifaceted value. Beyond reducing sludge volume by up to 90% and ensuring compliance with global environmental standards, these systems enable the recovery of reusable process water and valuable byproducts (e.g., residual catalysts or active compounds). This aligns seamlessly with circular economy principles, transforming wastewater treatment from a cost center into a sustainability enabler.​
Core Advantages of GN’s GNLW364 Decanter Centrifuge for Pharmaceutical Applications​
GN Separation’s GNLW364 series is purpose-engineered to meet the pharmaceutical industry’s rigorous demands for performance, durability, and operational flexibility. Three key technical features distinguish this solution:​
1. Duplex Stainless Steel 2205 Construction: Corrosion Resistance & Structural Integrity​
The centrifuge bowl and screw conveyor—critical components subjected to high mechanical stress and chemical exposure—are fabricated from duplex stainless steel 2205. This material exhibits exceptional corrosion resistance (exceeding that of 316L stainless steel) and superior mechanical strength, making it ideal for handling acidic, alkaline, or solvent-laden pharmaceutical wastewater. Employing centrifugal casting technology ensures uniform material density and eliminates internal porosity, enabling the bowl to maintain precise balance even at maximum rotational speeds (up to 3,600 rpm), thus minimizing vibration and extending service life.​
2. Tungsten Carbide Reinforcement: Abrasion Resistance for Long-Term Reliability​
The screw conveyor’s blade edges—prone to wear from abrasive particles (e.g., silica, undissolved salts, or catalyst residues) in pharmaceutical wastewater—are fortified with tungsten carbide plates and a spray-welded tungsten carbide coating. With a hardness rating second only to diamond, tungsten carbide provides exceptional resistance to erosive wear, reducing blade degradation by up to 80% compared to conventional materials. This design significantly lowers maintenance frequency, reduces downtime, and optimizes total cost of ownership (TCO) for pharmaceutical operators.​
3. Triple Variable Frequency Drive (VFD) Control: Adaptive Operation for Dynamic Feed Conditions​
Pharmaceutical wastewater composition often varies with production batches, requiring flexible treatment systems that can adapt in real time. The GNLW364 integrates a triple VFD control system, enabling independent regulation of three critical parameters: bowl rotational speed, differential speed between the bowl and screw conveyor, and feed pump flow rate. This level of control allows operators to fine-tune separation efficiency for diverse feed conditions—from high-solids sludge (up to 15% solids content) to low-turbidity effluent—ensuring consistent water quality and solids recovery performance across production cycles.​
Driving Sustainable Transformation in Pharmaceutical Manufacturing​
Against the backdrop of tightening global environmental regulations and the pharmaceutical industry’s growing commitment to sustainability, the GNLW364 decanter centrifuge represents a synergistic blend of advanced materials, wear-resistant technology, and intelligent control systems. By enabling efficient pollutant removal, resource recovery, and energy optimization, GN’s solution empowers pharmaceutical companies to reduce their environmental footprint while enhancing operational efficiency. As a trusted partner in separation technology, GN Separation continues to innovate, supporting the global pharmaceutical industry’s transition toward cleaner, more sustainable manufacturing practices.​