Recently, GN Separation successfully completed the manufacturing and delivery of several drilling fluids solids control centrifuge units for an overseas drilling company. The supplied equipment will be used for mineral exploration core drilling projects, oil drilling operations, and HDD (Horizontal Directional Drilling) mud treatment applications. Continue reading
Monthly Archives: May 2026
Over 10 Sets of GN Stack Vibrating Screens and Banana Screens Applied in Domestic Ilmenite Mine
GN Separation has recently completed the delivery of over 10 sets of vibrating screening units for a domestic ilmenite mining operation. The order includes GN Stack Vibrating Screens as well as large-scale Banana Vibrating Screens, reinforcing GN’s proven manufacturing strength and technical expertise in fine mineral processing and screening technology.
GN Stack Vibrating Screen — Precision Wet Screening & Dewatering
The GN Stack Vibrating Screen is engineered for wet screening, classification, and dewatering of fine-grained materials across mineral processing, coal preparation, and related industries. Depending on site-specific needs, the machine can be configured with 2 to 5 screen decks, delivering highly adaptable solutions for diverse operating conditions.
As a wholly self-developed GN product, the Stack Screen operates on a two-degree-of-freedom resonance principle. A single vibration source equipped with dual vibration motors drives the entire machine in a linear motion pattern.
Compared with traditional screening equipment, the GN Stack Vibrating Screen stands out for its distinctive vibration mode, superior screening efficiency, energy-saving performance, and high throughput capacity. Built with advanced engineering, the machine features a streamlined structure and dependable operation — positioning it among the most sophisticated fine-material screening solutions available today. Additionally, the screen is fitted with premium polyurethane screen panels that deliver outstanding wear resistance, extended service life, and reduced maintenance expenses.
GN Banana Vibrating Screen — High-Efficiency Coarse & Medium Particle Screening
For the coarse and medium particle screening stages of the project, GN supplied large Banana Vibrating Screens. Each unit comprises a box-type vibration exciter, screen box, vibration-damping springs, support frame, and driving system. The linear vibration trajectory ensures smooth material transport and consistently high screening performance.
The Banana Screen features a multi-stage broken-line screen surface with progressively changing angles. The steeper inclination at the feed end accelerates material movement and enables rapid stratification — ideal for screening easily separable particles. As the angle gradually decreases toward the discharge end, the material flow slows, increasing the probability of successful screening and markedly boosting overall efficiency.
Proven Capability, Global Reach
Backed by reliable product quality and deep expertise in mining and mineral separation, GN continues to deliver professional screening and separation solutions to customers worldwide. The successful commissioning of more than 10 sets of GN vibrating screens at this domestic ilmenite mine further validates GN’s ability to manage large-scale mineral processing projects and provide equipment solutions that are efficient, stable, and cost-effective.
Introduction about the Scroll of Decanter Centrifuge
The scroll, also known as the screw conveyor, is one of the most critical internal components of a decanter centrifuge. Installed inside the rotating bowl, the scroll rotates at a differential speed relative to the bowl. Its primary function is to continuously transport separated solids toward the conical end of the bowl for discharge. Continue reading
GN Containerized Oily Sludge Treatment System Delivered to African Client
GN Separation is pleased to announce the successful delivery of a fully integrated, containerized oily sludge treatment system to a client based in Africa. This turnkey solution delivers efficient, safe, and environmentally responsible treatment of oily sludge, addressing the complex demands of industrial and oilfield operations across the region.
A Fully Integrated, Multi-Module System
The GN containerized system combines several purpose-built modules—including a pre-mixing tank, vibrating screen, three-phase decanter centrifuge, and chemical dosing unit—into one compact, mobile platform. Each module is precisely engineered to manage a specific stage of the treatment process, ensuring seamless and high-performance operation from start to finish.
The system employs a chemical-assisted mechanical separation process to fully treat oily sludge. Sludge is first heated and conditioned in the pre-mixing tank, then coarse solids are removed through the vibrating screen. The conditioned material is subsequently fed into the three-phase decanter centrifuge, where dewatering and precise oil-water-solid separation take place. Strategic chemical dosing further boosts oil recovery rates, ensuring that all treated output meets stringent discharge and environmental compliance standards.
Built for Diverse Sludge Types
GN’s containerized solution is well-suited for a wide range of oily sludge, including refinery sludge, drilling waste, oil tank cleaning residues, and other industrial byproducts. By integrating chemical hot washing with advanced mechanical separation, the system achieves maximum oil recovery while significantly reducing waste volume—delivering a dependable and cost-effective answer for clients around the globe.
As a leading manufacturer of turnkey oily sludge treatment systems, GN specializes in customized solutions designed around the unique properties of each client’s sludge. Our expert team performs in-depth analysis of sludge composition and operational needs, empowering clients to reach peak treatment performance and operational efficiency.
Compact, Mobile, and Ready for Deployment
Engineered for easy transport, fast setup, and a minimal on-site footprint, GN’s containerized system is an ideal fit for remote or logistically challenging project sites. This latest delivery to our African partner reflects GN’s ongoing dedication to innovation, sustainability, and excellence in oily sludge management.
With GN’s containerized oily sludge treatment system, clients gain access to dependable oil recovery, environmentally compliant disposal, and streamlined operations—all from a single, fully integrated solution.
Containerized Three-Phase Decanter Centrifuge System for Oily Sludge Treatment in Africa
GN Separation is proud to announce the successful delivery of a containerized three-phase decanter centrifuge system to a valued client in Africa for oily sludge treatment applications. The system is specially designed to provide efficient oil-water-solid separation for various types of oily sludge generated from oilfields, refineries, tank cleaning operations, and industrial wastewater treatment processes. Continue reading
GN Containerized Sludge Dewatering System for Overseas Sewage Treatment Project
As environmental standards tighten globally and wastewater treatment capacity expands at an unprecedented pace, effective sludge management has emerged as a decisive factor in the success of modern treatment facilities. For overseas projects—particularly those constrained by limited site space, underdeveloped infrastructure, or compressed delivery schedules—conventional fixed-installation equipment often falls short in terms of adaptability and deployment speed. Containerized sludge dewatering systems have therefore risen to prominence as the preferred answer to these challenges.
Core Equipment: GNLW364-VFD Decanter Centrifuge
At the heart of this system sits the GNLW364-VFD Decanter Centrifuge, a purpose-built solid-liquid separation machine engineered for uninterrupted operation across fluctuating feed conditions. Its integrated Variable Frequency Drive (VFD) enables real-time adjustment of both bowl speed and differential speed, delivering peak separation performance regardless of sludge variability. This intelligent control translates directly into higher dewatering throughput, lower energy draw, and reduced long-term operating expenses.
Chemical Conditioning: 2000L Polymer Dosing Unit
Complementing the centrifuge is a 2,000-liter Polymer Dosing Unit, designed for accurate flocculant preparation and metered injection. Correct chemical conditioning is essential—it promotes robust floc formation, sharpens separation results, and drives down the moisture content of the final sludge cake. The dosing unit is built for dependable continuous service, with straightforward set-point adjustment and minimal maintenance demands.
Fully Containerized, Fully Integrated
All mechanical and process equipment is pre-installed inside two standard 20-foot shipping containers, creating a self-contained, weather-sealed, and transport-ready dewatering station. Key benefits include:
- Rapid deployment — minimal on-site assembly required
- Easy logistics — standard container dimensions fit global shipping routes
- Weather resilience — fully enclosed structure protects sensitive components
- Reduced civil works — no foundations or permanent buildings needed
These attributes make the system ideally suited for overseas installations where site preparation time and resources are scarce.
System Integration: GN’s Differentiating Strength
What sets this project apart is GN’s end-to-end system integration philosophy. Rather than delivering isolated machines, GN engineers a complete, turnkey solution—combining mechanical separation, chemical dosing, piping networks, electrical controls, and process automation into one cohesive package. Every stage of the workflow—sludge reception, polymer conditioning, centrifugal dewatering, and cake discharge—is pre-designed, pre-assembled, and pre-tested to ensure seamless commissioning upon arrival at site.
The engineering team paid particular attention to interior layout optimization within the container footprint, balancing safe access for routine maintenance, logical material flow, and compact space utilization. A centralized electrical control and monitoring system allows operators to manage the entire process from a single interface, boosting reliability while cutting labor requirements.
Looking Ahead
This project exemplifies GN’s commitment to delivering more than equipment—it delivers complete, application-specific process solutions. The containerized sludge dewatering system embodies the future of wastewater treatment: compact, mobile, intelligent, and efficient.
As the global push for sustainable water and waste management intensifies, GN continues to invest in advanced separation technology and integrated engineering capabilities. Through ongoing innovation and real-world project experience, GN is dedicated to helping customers everywhere achieve sludge management that is smarter, more cost-effective, and kinder to the environment.
Big Bowl Decanter Centrifuge for Overseas Paper Mill Wastewater Treatment
With the continuous tightening of global environmental regulations and the growing emphasis on sustainable industrial production, wastewater treatment in the pulp and paper industry has become an increasingly important focus worldwide. Paper mills generate large volumes of high-strength wastewater containing fibers, suspended solids, organic matter, and residual chemicals from pulping and bleaching processes. Efficient solid-liquid separation is therefore essential for reducing environmental impact, improving water recycling efficiency, and lowering operating costs. Continue reading