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.
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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.
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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.​

GN 5-DECK STACK VIBRATING SCREEN FOR DOMESTIC IRON MINE

This week, GN Separation achieved a significant milestone by successfully assembling four GND5Z1014 Stack Vibrating Screens and completing their factory test runs. Specifically engineered for high-efficiency iron ore screening, these units are now undergoing final inspections and are slated for delivery to a prominent domestic iron ore mining site next month.

The Strategic Importance of Stack Vibrating Screens in Iron Ore Processing

Iron ore, the foundational material for global steel production, necessitates rigorous processing to adhere to the exacting quality standards set by modern industries. Screening is a pivotal stage in this process, segregating ore particles by size to optimize downstream processing efficiency. While traditional single-deck vibrating screens have proven effective, they often encounter challenges in managing large material volumes while maintaining precision, especially in fine particle separation.

Stack vibrating screens, also known as multi-deck screens, emerge as a critical solution in this context. By vertically stacking multiple screening decks, these machines efficiently process large material volumes within a single unit. This compact, high-capacity design not only minimizes space requirements but also reduces energy consumption and enhances throughput compared to single-deck screens. For iron ore producers, this translates into elevated recovery rates of valuable minerals, diminished operational costs, and improved environmental sustainability through reduced waste generation.

Key Features of the GN Stack Vibrating Screen

  1. Multi-Deck Efficiency:
    The GND5Z1014 boasts five independent screening decks, enabling simultaneous separation of materials at varying flow rates, tailored to the specific characteristics of the feed.
  2. High-Frequency Vibration Technology:
    Powered by dual-vibration motors, the screen generates high-frequency, low-amplitude vibrations that effectively mitigate blinding and pegging—common challenges in processing sticky or moisture-laden iron ore. This ensures consistent and accurate screening, even with challenging materials.
  3. Robust Construction and Wear Resistance:
    Constructed with high-strength steel frames, the GND5Z1014 is designed to endure the abrasive conditions typical of iron ore processing. Key components, such as the screen decks, are coated with polyurea to prolong service life and minimize maintenance downtime.
  4. Rapid Screen Mesh Replacement:
    The stack vibrating screen is equipped with polyurethane screen mesh, which can be swiftly replaced by loosening and fastening the screen blocking device, thereby reducing downtime and enhancing operational efficiency.

Strategic Implications and Market Outlook

The impending deployment of the GND5Z1014 screens underscores GN Separation’s commitment to bolstering China’s strategic mineral security initiatives. With domestic iron ore production under increasing pressure to meet escalating steel demand, efficient processing technologies are imperative for maximizing yield from existing reserves.

GN Separation’s latest achievement reflects its broader strategy of integrating localized expertise with global technology trends. The successful launch of various mining screens at the GN factory positions GN Separation to capture a larger market share in the vibrating screen sector, offering professional and reliable screening solutions to users both domestically and internationally.

By leveraging cutting-edge technology and a deep understanding of market needs, GN Separation is poised to drive innovation and efficiency in the iron ore mining industry, reinforcing its position as a trusted partner in the global mining community.

GN 5-Deck Stack Vibrating Screen for Domestic Iron Mine

This week, GN Separation successfully completed the assembly and factory testing of four GND5Z1014 stack vibrating screens. These units, specifically engineered for high-efficiency iron ore screening, are currently undergoing final inspections before being dispatched to a major domestic iron ore mining site next month. Continue reading →

GN 30inch Big Bowl Decanter Centrifuge for Peru Big Mining Company

GN Separation has recently achieved a significant milestone by successfully completing the assembly and factory testing of four GNLW764 Big Bowl Decanter Centrifuges for a client in Peru. These high-capacity machines, meticulously designed to meet the rigorous demands of industrial applications, are set to play a pivotal role in enhancing tailings dewatering processes within the mining sector. This strategic move addresses critical challenges related to water conservation, environmental compliance, and operational efficiency, thereby contributing to a more sustainable mining industry.

Decanter Centrifuges: A Game-Changer in Mining Tailings Management

Mining operations generate substantial volumes of tailings—a slurry comprising water, fine particles, and residual minerals—that necessitate effective treatment prior to disposal or reuse. Traditional tailings management methods, such as ponds or dams, are increasingly facing scrutiny due to space limitations, environmental risks, and stringent regulatory requirements. In this context, decanter centrifuges have emerged as a revolutionary technology, offering swift and efficient separation of solids from liquids, thereby transforming the tailings management landscape.

GNLW764: Engineering Excellence for Large-Scale Applications

The GNLW764 Decanter Centrifuge, GN Separation’s flagship model and the largest in its product range to date, is engineered to withstand the rigorous demands of high-volume processing. Featuring a 30-inch (764 mm) bowl diameter and a robust design, this machine is ideally suited for applications such as mining tailings dewatering, tunnel boring machine (TBM) slurry separation, and other industrial processes requiring substantial throughput.

1. Tungsten Carbide Protection: Ensuring Durability in Harsh Environments

Mining environments are inherently abrasive, with tailings containing coarse particles that can rapidly erode equipment. To counter this, GN Separation has incorporated tungsten carbide coatings on critical components, including the screw conveyor (spiral) blades and solids discharge ports. Tungsten carbide, renowned for its exceptional hardness and resistance to wear and corrosion, significantly extends the service life of these parts, minimizing downtime and maintenance costs. This ensures consistent performance even in the most challenging conditions, providing mining operators with a reliable and long-lasting solution.

2. VFD Control Cabinet: Precision and Safety in Operation

The GNLW764 is equipped with a Variable Frequency Drive (VFD) control cabinet, enabling precise adjustment of rotational speed to optimize separation efficiency for varying feed materials. This flexibility allows operators to customize the centrifuge’s performance to specific process requirements, whether handling fine clay particles or coarser minerals. Moreover, the VFD system integrates real-time monitoring of temperature and vibration levels, ensuring safe and efficient operation.

Complementary Technology: GNSJY6000 Flocculation Dosing Unit for Enhanced Performance

To further elevate dewatering performance, GN Separation recommends pairing the GNLW764 with its GNSJY6000 Flocculation Dosing Unit. This system automates the injection of flocculants—chemicals that aggregate fine particles into larger, more manageable clumps—into the feed slurry. By optimizing flocculation, the combined solution achieves superior solids capture rates and higher water recovery, thereby enhancing overall dewatering efficiency.

Looking Forward: A Commitment to Sustainability and Innovation

As the global mining sector continues to prioritize sustainability and operational efficiency, GN Separation remains at the forefront of innovation. Our ongoing investments in research and development, coupled with a comprehensive global service network, ensure that clients receive not only cutting-edge equipment but also unwavering support throughout the equipment lifecycle.

With the GNLW764 Decanter Centrifuges now ready for dispatch to Peru, GN Separation is poised to solidify its position as a leading provider of professional industrial separation solutions. We are dedicated to delivering value to our clients and contributing to a more sustainable future for the mining industry, one innovation at a time.

GN 30inch Big Bowl Decanter Centrifuge for Peru Big Mining Company

GN Separation has successfully completed the assembly and factory testing of four GNLW764 Big Bowl Decanter Centrifuges for a client in Peru. These high-capacity machines, purpose-built for demanding industrial environments, will play a key role in tailings dewatering within the mining sector—helping operators improve water recovery, environmental compliance, and overall operational efficiency. Continue reading →