Tag Archives: Decanter centrifuge

GN Sewage Treatment Decanter Centrifuge for Overseas Customer

GN Separation has successfully delivered a batch of sewage treatment decanter centrifuges to an overseas customer engaged in large-scale wastewater treatment operations. This project once again demonstrates GN Separation’s capability to provide reliable, customized separation equipment that meets stringent international standards while addressing complex, real-world operating conditions. Continue reading →

GN Trash Screen Used for Impurity Removal before Iron Ore Flotation

GN Separation has recently provided its high-performance Trash Screen system to an iron ore beneficiation project, aiming to eliminate impurities before the flotation process. In today’s mineral processing industry, ensuring the cleanliness and stability of flotation feed is vital for producing higher-grade concentrates and ensuring smooth plant operations. The GN Trash Screen is precisely designed for this task, offering reliable separation of unwanted debris from valuable ore and assisting operators in maintaining optimal process efficiency.

Throughout the mining and transportation of iron ore, various impurities inevitably find their way into the raw material flow. These impurities encompass plant roots, bark, twigs, plastic pieces, blasting fuse remnants, and other foreign objects that can hinder flotation performance. If not removed in advance, these impurities can clog flotation cells, reduce aeration effectiveness, disrupt reagent dispersion, and ultimately lead to inconsistent recovery rates. In severe scenarios, they may even require shutdowns for cleaning, resulting in production downtime. The GN Trash Screen is engineered to prevent such issues by implementing an efficient pre-screening step that protects the flotation circuit.

The GN Trash Screen is equipped with a sturdy vibratory mechanism that generates high-frequency screening motion, enabling quick material stratification and effective impurity removal. When paired with specially crafted screen panels, the equipment ensures accurate classification and consistent screening precision. These screen panels are made from wear-resistant materials capable of handling abrasive iron ore slurry, providing a prolonged service life and minimizing maintenance requirements. Even under heavy operational loads, the screen maintains a stable throughput and delivers exceptional dewatering and separation capabilities.

Another notable advantage of the GN Trash Screen is its simple design and ease of use. The machine is designed for effortless integration into existing beneficiation lines, and its open structure allows for easy access during inspections and routine maintenance. This enhances overall plant reliability and helps operators reduce unplanned downtime. By eliminating oversized contaminants early in the process, the Trash Screen not only safeguards flotation equipment but also enhances the stability of downstream processes and decreases the likelihood of operational interruptions.

With cleaner feed entering the flotation circuit, the quality of the final iron concentrate can be significantly enhanced. Stable flotation conditions lead to more efficient reagent consumption, improved recovery rates, and more consistent product quality. For plants aiming to optimize production efficiency, lower operating costs, and maintain high output stability, GN’s impurity-removal solution offers a substantial performance boost.

GN Separation continues to focus on advancing screening and solid-liquid separation technologies tailored to the mining and mineral processing industry. The successful deployment of the GN Trash Screen in iron ore flotation preparation highlights its dedication to providing reliable, high-quality equipment that meets the stringent demands of global beneficiation operations.

GN Delivers 7 Units Decanter Centrifuge for Chemical Salt Dewatering

GN Separation is pleased to announce the successful delivery of seven  decanter centrifuges to a chemical processing customer specializing in chemical salt production. These units will be deployed for the continuous dewatering of various inorganic chemical salts—an application that requires high-efficiency solid–liquid separation, operational reliability, and long-term mechanical durability. Chemical salt production typically involves crystallization, washing, and centrifugation stages; therefore, the performance of the dewatering equipment has a direct impact on product purity, production stability, and overall plant efficiency. GN Separation’s decanter centrifuge solutions are engineered specifically to meet these demanding industrial conditions. Continue reading →

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 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 →

GN Separation Will Participate in CCME 2025

Place: Capital International Convention and Exhibition Center (Shunyi, Beijing)
Date: October 28–31, 2025
Booth No.: A4601

GN Separation is pleased to announce its participation in the 22nd China Coal & Mining Expo (CCME 2025), one of the largest and most influential trade fairs for the coal and mining industry. The exhibition will take place at the Capital International Convention and Exhibition Center in Beijing, where GN will showcase its advanced solid-liquid separation technologies for mining, tailings management, and industrial dewatering.

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