Month: April 2025

GN Separation is pleased to announce the successful completion and preparation of 8 sets of Stack Vibrating Screens (Fine Sizer models) for shipment to a valued domestic client. This batch marks another milestone in GN’s continued commitment to delivering reliable and efficient fine screening solutions for industrial applications.

GN Stack Vibrating Screen – Tailored for Fine Wet Screening

The GN Stack Vibrating Screen is a self-developed solution specifically designed for wet screening, classification, and dehydration of fine-grained materials. It is widely used across mineral processing, coal preparation, and other industrial sectors that demand high-efficiency particle separation.

Each screen can be configured from 2 to 5 layers to match site-specific operational needs. The stacked configuration offers a compact footprint while significantly improving processing capacity per unit area.

Key Features and Advantages

• Resonance-Based Linear Vibration: Driven by dual vibration motors, the screen uses a two-degree-of-freedom resonance principle to achieve efficient linear vibration.

• Energy Efficient & High Capacity: Offers high screening efficiency, low power consumption, and stable performance.

• Modular & Durable Design: Screen boxes are layered and easy to maintain. The screen mesh is made of high-opening-rate polyurethane (28–45%), with a typical lifespan exceeding 6 months.

• Advanced Corrosion Protection: The screen body undergoes sandblasting and heavy-duty anti-corrosion coating, while surfaces in contact with material are coated with polyurea resin for superior wear resistance.

Feeding Box – Engineered for Efficiency and Longevity

The feeding box adopts a modular design with easy-to-assemble bolt or quick-clamp connections. Key enhancements include:

• Multi-level buffering to slow down material flow, reducing screen damage and wear.

• Material distribution board for even feed across the screen surface.

• Polyurea coating inside the feeding box for extended corrosion and wear resistance.

• Adjustable height to meet various on-site requirements.

Model Options and Technical Parameters

GN offers multiple models for small to large-scale operations, including:

• GND3Z1014 / GND4Z1014 / GND5Z1014

• GND3Z1021 / GND4Z1021 / GND5Z1021

• GND3Z1416 / GND4Z1416 / GND5Z1416

Processing capacities range from 5 to 42 m³/h (dry ore) depending on the screen size and working conditions. Please note that actual capacity varies based on the material and site setup. For specific recommendations, GN technical support is available for consultation.

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Conclusion

With their compact design, large capacity, long service life, and low maintenance requirements, GN Stack Vibrating Screens offer an ideal solution for fine material classification and dewatering. The upcoming delivery of 8 sets to our domestic customer demonstrates strong market confidence in GN’s product quality and technical innovation.

For inquiries about our Stack Vibrating Screens or to request a customized proposal, please contact GN Separation today.

GN Separation is proud to announce the successful delivery of our Dewatering Centrifuge System to an overseas client. This system includes our high-performance GNLW series Decanter Centrifuge and the GNSJY2000 Chemical Dosing Unit, designed to meet the demanding requirements of wastewater treatment and sludge dewatering applications.

GN Dewatering System: Effective Solution for Fine Particle Separation

In many wastewater treatment processes, simple mechanical separation methods can only remove particles in the range of 2–5 microns. However, ultrafine particles, often present in industrial wastewater, are much more difficult to remove using traditional methods.

GN’s Dewatering System provides an efficient solution by combining a high-speed Decanter Centrifuge with a Chemical Dosing Unit. With this integrated system, ultrafine particles can be flocculated into larger, more easily separable clusters, enabling the centrifuge to achieve optimal separation performance and meet the client’s discharge or reuse requirements.

GNSJY2000 Chemical Dosing Unit: Precision and Efficiency

The GN Chemical Dosing Unit is a compact, easy-to-operate, and low-energy consumption system designed for the automatic preparation and dosing of flocculants. It is widely used in sludge dewatering, solid-liquid separation, and various water treatment processes. The dosing compartment allows for stirring, dissolving, and storage of flocculants, which are then delivered to each dosing point by dosing pumps.

To meet various project needs, GN Separation offers two standard types of Chemical Dosing Units:

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1. GN Fully Automatic Dry Powder Dosing Unit (PAM Type)

Configuration Highlights:

Working Principle:

The unit features a three-stage process:

1. Preparation Stage – Chemical powder is fed and mixed with water.

2. Curing Stage – The solution is further dissolved and cured.

3. Storage Stage – The final solution is stored and pumped to the dosing point.

Key Features:

• Fully automatic with PLC control

• Compact design and small footprint

• Easy installation – only water and power connections required

• Corrosion-resistant materials

• Consistent performance with intelligent dry powder dosing adjustment

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2. GN Liquid Flocculant Dosing Unit

Configuration Highlights:

Working Principle:

This unit is ideal for pre-prepared liquid flocculants. Operators can either directly pump pre-mixed solutions or prepare solutions manually by mixing powder and water in the tank. The electric mixer ensures even blending and stable flow.

Key Features:

• Large solution tank volume and energy-saving operation

• Modular design with small footprint

• Easy operation and remote control capability via PLC

• High dosing capacity and stable performance

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Containerized Dosing System – Plug & Play Convenience

GN also provides containerized dosing units that integrate the chemical dosing system into a prefabricated container. This layout simplifies on-site installation and enhances mobility, especially in harsh outdoor environments. Operators can work inside the container with all equipment and control panels protected from the elements.

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Additional Applications of GN Chemical Dosing Units

GN Chemical Dosing Units are not limited to flocculants. They are also suitable for:

• Adding coagulants, filter aids, disinfectants, and pH regulators in water treatment

• Dosing corrosion and scale inhibitors in cooling and circulation systems

• Chemical dosing in industries such as textile dyeing, printing, and manufacturing

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Conclusion

With reliable performance, automation, and customizable design, GN’s Dewatering System continues to be a trusted choice for clients worldwide. Whether for municipal or industrial wastewater treatment, GN Separation’s equipment helps customers achieve efficient and compliant solids-liquid separation.

GN Separation looks forward to working with you on your next project.

In wastewater treatment processes, the ability to effectively separate ultrafine particles is crucial for achieving regulatory discharge standards and protecting downstream equipment.  Chemical Dosing Unit plays a vital role in enhancing solid-liquid separation by enabling precise chemical conditioning of wastewater. When paired with a high-speed decanter centrifuge, the GN Chemical Dosing Unit allows for the removal of particles much smaller than 2–5 microns—something that traditional mechanical methods alone cannot achieve.

Compact and Reliable Chemical Dosing for Wastewater Applications

The GN Chemical Dosing Unit is an integral part of GN’s Dewatering System. This unit is designed to prepare, dissolve, and dose flocculants and other treatment chemicals to improve the efficiency of particle separation. With a compact footprint, corrosion-resistant materials, and low energy consumption, it provides both performance and convenience for a wide range of industrial applications.

GN offers two standard models to meet different chemical dosing needs:

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1. GN Full Automatic Dry Powder Dosing Unit (PAM)

This model is engineered for precise and automatic preparation of dry powder flocculants. It features a three-compartment stainless steel cabinet that manages the entire preparation cycle: Preparation, Curing, and Storage.

Key Features:

• Integrated design with stainless steel construction.

• Fully automatic PLC control system.

• High accuracy and consistent dosing performance.

• Designed for safe and reliable operation with multiple safety valves and alarms.

• All wetted parts are made of corrosion-resistant plastic or stainless steel.

• Suitable for a variety of chemical forms including powders, granules, and fibrous additives.

Working Principle:

The system mixes the dry powder flocculant with water in stages:

1. In the Stirring Dissolving Tank, the powder is thoroughly mixed with water.

2. The solution then moves to the Curing Tank for additional blending and reaction time.

3. Once ready, the final solution flows into the Storage Tank and is delivered to dosing points by precision dosing pumps.

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2. GN Single Barrel Liquid Chemical Dosing Unit (PAC)

This system is designed for dosing liquid flocculants or coagulants. The dosing unit includes a mixing tank equipped with a stirrer and is available in either a PE barrel with a metal shell or a fully stainless-steel configuration.

Key Features:

• Large capacity mixing tank with stable performance and low energy usage.

• Compact design, small footprint, and easy installation.

• Fully automated dosing with PLC-based control; remote operation is also available.

• High dosing flow rate with easy maintenance access.

Working Principle:

Operators can either pre-configure the liquid chemical and pump it into the tank, or manually add dry powder chemicals and mix with water in the correct proportion. The solution is then continuously stirred to ensure uniformity before being dosed into the treatment process.

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Containerized Chemical Dosing System for Harsh Environments

For demanding project sites or outdoor installations, GN offers containerized chemical dosing solutions. These systems integrate the dosing unit within a standard container that is weatherproof, easy to transport, and ready to operate. All inlet and outlet ports are pre-reserved for fast connection to external equipment, and the container provides a safe, sheltered environment for operators.

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Broader Applications of GN Chemical Dosing Units

GN Chemical Dosing Units are versatile and can be used across industries for:

• Water treatment: Adding coagulants, flocculants, disinfectants, acids, and alkalis.

• Cooling systems: Dosing corrosion and scale inhibitors.

• Chemical processing, printing, and dyeing: Dosing various liquid reagents and pH control agents.

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Whether your project requires dry powder or liquid chemical dosing, GN offers customized solutions tailored to your flow rate, chemical type, and operating conditions. With proven reliability and efficiency, our Chemical Dosing Units enhance the performance of wastewater treatment systems, helping clients meet strict environmental standards.

GN Separation – Your Partner in Efficient Separation Solutions.