Monthly Archives: January 2024

High Shearing-force Circular Screen for Overseas Silicon Sand Classification Project

News from GN Separation this week: Recently, 1 set of High Shearing-force Circular Screen has been manufactured and is ready to start serving for an overseas Silicon Sand Classification project.

The features of GN High Shear Circular Screen are as below:

GN Separation‘s high shear circular screen utilizes a single vibration motor as the power source, inducing circular motion in the screen deck.
Equipped with imported vibration motors (Martin or OLI) featuring advanced technology, ensuring reliable operation and prolonged trouble-free service life.
The screen box assembly is divided into multiple sections, offering benefits such as high processing capacity, superior screening efficiency, minimal power consumption, reduced dynamic load, straightforward operation, consistent performance, safety, durability, and low maintenance requirements.
Convenient and dependable mechanical angle adjustment of the screen box assembly. Reconstituted-slurry spray water is introduced between each section of the screen deck to enhance material screening effectiveness.
The screen box undergoes comprehensive heat treatment to withstand prolonged operation under high vibration intensity.
Utilizes internationally renowned electrical components from Siemens or Schneider.
Features flexible polyurethane screen mesh with excellent elasticity, minimizing screen blockage. Installation of 4 to 5 screen panels is possible.
The screen is secured using mesh-pulling bolt components, ensuring ease of operation and reliable fastening.
Surface treatment of the vibrating screen incorporates sandblasting technology and heavy anti-corrosion paint spraying, offering excellent corrosion resistance. The material contact surface is coated with a wear-resistant polyurea resin layer or fitted with wear-resistant rubber plates to safeguard the screen machine’s surface and extend its operational lifespan.

To ensure that’s this High Shear Circular Screen will deliver reliable performance and that all parts and components operate smoothly for long-term usage, our technical, production, and quality control departments have meticulously focused on material selection, preparation, every production step, and inspections at each stage

Should you require any assistance regarding the operation and maintenance of Mud Solids Liquid Separation Equipment, such as vibrating screen, Mud tank, Desilter, Desander Unit, Decanter Centrifuge, please feel free to contact GN Separation. Our engineers possess the best experience and knowledge in the relevant industry, and we are committed to providing optimal support for your project. Establishing stable and long-term cooperation is our goal, and we offer online support and on-site instructions tailored to specific situations if needed.

Solid Vacuum Pump: A Valuable Assistant in Polymer Slurry Transferring

In today’s industrial field, efficient and safe material transportation is pivotal in enhancing production efficiency and reducing costs. This week, GN Separation is excited to share that we have successfully completed the production and factory test of a set of GNSP-20B solid vacuum pump and promptly delivered it to our European customer’s site. The primary task of this pump is to assist in the efficient transportation of polymer slurry.

The solid vacuum pump is the core equipment in our soly developed material transportation system, operating based on vacuum suction technology. It offers unique advantages compared to other similar products. Firstly, it is 100% air-driven, eliminating the need for power connections, and features a compact design. This ensures stable operation under various environmental conditions, meeting the transferring requirements of various highly fluid or loose materials such as liquids, slurries, and solid powders.

Working principle:

Material Suction: High pressure and high-speed air get into the jet air tube assembly via inlet (high vacuum is produced by the air pocket in the jet air tube assembly) producing high vacuum in the tank for material suction.

1）Yellow arrows indicate compressed air flow direction; Red arrows indicate air flow direction inside the tank; Purple arrows indicate material entering direction;

2）Air enters into the distribution pocket via inlet, vacuum produced in the air distribution pocket. （when restricted flow passes the contractible cross section, flow speed will increase. Flow speed is inversely proportional to the cross section, the increasing of speed will go with reducing of fluid pressure. Low pressure will be produced near high speed fluids, then produce suction action）;

3）When low pressure produced at the air pocket, the air in the tank flows towards the air pocket and gets out together with compressed air, and then vacuum generated in the tank；

4）When pressure inner tank is lower than ambient pressure, material will gets into the tank under atmospheric pressure.（6-8 meters suction height of water, suction height is different due to material density and viscosity differences ）.

Principle Diagram：

Discharge Material：

1) After suction process, compressed air flow direction changes and gets into the material storage tank, as above picture showing. Pressure inside tank will be higher and higher, finally the material is discharged out under high pressure and flows faraway with compressed air.（Max. horizontal transferring distance reaches 500-1000 meters, actually distance is different due to different material density and viscosity）；

As an efficient and environmentally friendly transportation device, the solid vacuum pump plays a significant role in polymer slurry transportation. This pump can effortlessly handle the challenges of transporting highly fluid or loose materials, ensuring smooth production processes. Furthermore, due to its compact structure and simple operation, the solid vacuum pump not only reduces operational costs but also improves production efficiency.

Beyond its application in polymer slurry transportation, the solid vacuum pump has widespread applications in many other industries. For instance, in the oil and gas industry, it can be used for the transportation of drilling cuttings and oily sludge. These materials often exhibit high specific weights and high solid phase content, making the solid vacuum pump an ideal choice for handling them.

It’s worth mentioning that the GN solid vacuum pump has obtained EU CE and ATEX certifications, fully compliant with the stringent standards of the European market. This means that our products not only feature excellent performance but also possess a high level of safety and reliability. For customers who require high-efficiency and high-safety material transportation solutions, the GN solid vacuum pump is undoubtedly a trusted option.

Looking ahead, we believe that the solid vacuum pump will continue to play a significant role in polymer slurry and other material transportation. With ongoing technological advancements and growing market demands, we will remain committed to developing more efficient and safer material transportation solutions to meet the needs of our global customers.

If you are interested in our solid vacuum pumps or would like to learn more information, please feel free to contact us. We look forward to creating a brighter future together!

GN High Frequency Fine Vibrating Screen for Overseas Golden Mining

News from GN company this week: Recently, 1 set of high-frequency fine Vibrating Screen has been manufactured and is ready to start serving for an overseas golden mining project.

The model number of this set of high-frequency fine Vibrating Screen is GNFG1028.

To ensure that’s this high-frequency fine Vibrating Screen will deliver reliable performance and that all parts and components operate smoothly for long-term usage, our technical, production, and quality control departments have meticulously focused on material selection, preparation, every production step, and inspections at each stage.

Should you require any assistance regarding the operation and maintenance of Construction Mud Solids Liquid Separation Equipment, such as Vibrating Screen, Mud tank, Mixer, Centrifugal pump, mud cleaner, feel free to contact GN company. Our engineers possess the best experience and knowledge in the relevant industry, and we are committed to providing optimal support for your project. Establishing stable and long-term cooperation is our goal, and we offer online support and on-site instructions tailored to specific situations if needed.

As a leading manufacturer of separation and conveying equipment, GN consistently prioritizes product quality, considering the long-term benefits for our users. In the Decanter centrifuge field, GN is a professional manufacturer that meticulously selects raw materials, utilizing high-quality centrifugal casting or forging stainless steel materials. For wearing parts, hard alloy protection is implemented to enhance durability and performance.

In addition to the rigorous quality control measures implemented during the manufacturing process of the high-frequency fine Vibrating Screen and other Solids Liquid Separation Equipment, GN upholds a commitment to innovation and continuous improvement. Our research and development team consistently explores cutting-edge technologies and industry trends to enhance the performance and efficiency of our equipment. This dedication to innovation ensures that GN’s products remain at the forefront of the separation and conveying equipment industry, providing our users with access to the latest advancements.

GN High Shear Circular Screen for Overseas Silicon Sand Classification Project

Several days ago, GN Separation has successfully assembled and undergone factory testing for a high shear circular vibrating screen, model no. GNYK1028, which is scheduled to be shipped abroad for a silica sand classification project.

GN High Shear Circular Vibrating Screen GNYK1028

GN High Shear Circular Vibration Screen is a groundbreaking equipment, developed solely by GN Separation Technical Team. This innovative screening equipment is designed to harness the power of a single vibration source, a vibration motor, to generate circular motion in the screen deck assembly. Its working principle is to sieve the materials on the screen driven by the vibrator. The technology design makes it of excellent performance on processing a range of materials, including but not limited to the following categories:

Chemical products: such as pigments, coatings, paints, resins, titanium dioxide powder, rubber particles, etc.
Food: such as flour, sugar, salt, grains, etc.
Medicine: such as Chinese herbal medicine, western medicine, bulk drugs, etc.
Ceramics and mining: such as ores, like iron ore, gold ore, silica sand, feldspar, coal, etc.

GN High Shear Circular Vibrating Screen GNYK1028

My pleasure to introduce its outstanding features as below:

Robust Operation: The screen relies on high-performance vibration motor brands like Martin motor or OLI motor, ensuring it with both dependable operation and long trouble-free operation time.
Efficient Processing: The screen deck is meticulously designed with multiple sections, significantly boosting its treatment capacity. This configuration offers higher working efficiency, lower energy consumption, consistent performance, and reduced customers’ maintenance needs in actual applications.
Enhanced Screening Effect: Each section of the mesh is equipped with a re-pulp spray pipeline, which further improving the screening process efficiency.
Durable Construction: Heat treatment technical carried out on the whole screen deck ensure it to withstand the high-intensity vibration during long-term using. Via surface heat treatment, the screen mesh surface structure is changed to more compact and stronger, improving hardness and corrosion resistance, thereby enhancing its wear resistance and durability. Meanwhile, form a protective film cover, which can effectively prevent the screen mesh from being oxidized and corroded to enhance the corrosion resistance of the screen mesh and extend its service life. What’smore reduce the roughness of the screen mesh surface, making it smoother, effectively improve the working performance of the screen mesh and increase its screening efficiency and accuracy.
Quiet Operation: The use of flexible polyurethane screen mesh, ensures minimal equipment noise in operation. It is a kind of high molecular polyurethane elastomer, with excellent physical and mechanical properties: high strength, large elasticity and rather nice wear resistance, with an opening rate of polyurethane screen mesh is 28% ~ 45%. GN is committed to providing customers with flexible polyurethane screen mesh with finer mesh, higher opening area and better polyurethane screen surface.
Easy Maintenance: The screen mesh is secured using bolt components that are easy to disassemble for inspection and reassembly, ensuring convenient and reliable fastening.
Longevity: The vibrating screen components’ fluids touching surfaces are coated with a polyurethane resin wear-resistant and anti-corrosion layer or protected by wear-resistant rubber plates by the spraying machine imported from the United States, which is corrosion-resistant, erosion resistant and wear-resistant. Which extends the durability of the screen equipment.

As a high-frequency vibrating screen, GN High Shear Circular Vibration Screen operates at a frequency of 25Hz, ensuring efficient separation of materials even at smaller sizes. It can be applied in various working conditions that are easy to corrode and wear. Large processing capacity, high efficiency and stable performance. GN manufactures proffessional Mining Vibrating Screen, including Stack Vibrating Screen, High Frequency Vibrating Screen, Dewatering Vibrating Screen, Classification Vibrating Screen, Large Mining Vibrating Screen. Welcome to contact GN now.

GN Solid Vacuum Pump for Garnet Powder Transportation in Middle East

News from GN Separation: Recently, a set of Solid Vacuum Pump with transfer hoses have been manufactured and ready to start serving a Garnet Powder Transportation project in Middle East.

To ensure the Solid Vacuum Pump along with hoses, delivers reliable performance and all components run smoothly for long-term operation, our technical, production, and quality control departments have meticulously focused on material selection, preparation, every production step, and thorough inspections at each stage.

If you need support regarding the operation and maintenance of the Vacuum Pump, feel free to contact GN company for our engineers’ best experience and knowledge in the relevant industry. We are committed to assisting your project to establish stable and long-term cooperation. We also offer online support and on-site instruction for specific situations if needed.

As a leading manufacturer of separation and conveying equipment,GN Separation prioritizes product quality and considers the long-term benefits for our users. In the decanter centrifuge field, GN is a professional manufacturer, giving careful attention to raw material selection. High-quality centrifugal casting or forging stainless steel materials are used, and for wearing parts, hard alloy protection is applied.

GN utilizes high-end CNC lathes, CNC centers, and CNC gantry milling machines to ensure the machining accuracy of centrifuge parts. In terms of dynamic balance, GN employs not only ordinary low and medium-speed dynamic balance but also a high-speed dynamic balance process. This process dynamically balances the centrifuge screw and bowl at the actual working speed. GN’s decanter centrifuges find wide applications in various industries and are exported to over 60 countries and regions worldwide, earning high praise from customers.

A series of Mud cleaners and Shakers for Indonesia Project

Recently, 1 series of Desander, mud cleaner, and Shale Shaker have been manufactured and ready to start operation for an Indonesian Project.

This project marks a significant achievement in GN’s ongoing commitment to delivering top-tier solids control solutions to customers across diverse industries.

The successful sale to our Indonesian client is not only a major business milestone for GN but also reinforces our standing as a reliable provider of efficient equipment in the solids control industry. The client’s preference for our product is rooted in its proven track record of screening efficiency, durability, and low maintenance requirements.

Ensuring the reliable performance of the Desander, mud cleaner, and Shale Shaker, as well as the smooth operation of all parts and components for long-term use, has been a central focus for our technical, production, and quality control departments. Every aspect, from material selection and preparation to production steps and inspections, is meticulously attended to.

The Desander, mud cleaner, and Shale Shaker series play a pivotal role in GN’s comprehensive lineup of premium solids control and screening solutions, which includes decanter centrifuges, shale shakers, and conveyance equipment. Each product in our portfolio is crafted with cutting-edge technology, upholding the highest standards of safety and efficiency.

The successful sale of our Desander, mud cleaner, and Shale Shaker underscores GN’s commitment to delivering impactful solutions to the solids control industry, emphasizing our dedication to effectiveness and excellence.

For any assistance related to the operation and maintenance of GN’s equipment, including Desander, mud cleaner, and Shale Shaker, please feel free to contact GN company. Our team of engineers possesses extensive experience and knowledge in the industry, committed to providing the best support for the success of your project. We are also prepared to offer online support and on-site guidance tailored to address specific situations if needed, fostering stable and long-term cooperation through collaborative efforts.

How to adjust and control the vibration of decanter centrifuge

Processing any equipment will definitely produce tolerances. The higher the processing accuracy, the smaller the tolerances, but the processing cost is greatly increased. The Decanter centrifuge is designed to use a variety of knowledge to achieve a certain processing error, so that the decanter centrifuge’s vibration is controlled within the normal range. However, if the user uses it improperly, it will destroy this design balance and cause serious accidents. Only when the working speed of the decanter centrifuge is not the critical speed, the rotor can move smoothly. For low-speed decanter centrifuges with a low working speed, the critical speed is generally increased as much as possible, so that the Decanter centrifuge operates below the critical speed. The shaft of this decanter centrifuge is very thick and has high rigidity, which is called a rigid shaft. When the speed requirement is very high, reduce the critical speed as much as possible. The shaft is made thinner and the rigidity is small. It is called a flexible shaft. Modern decanter centrifuges all use flexible shafts.

The critical speed is related to the Decanter centrifuge and the rotor used. A decanter centrifuge can be equipped with several kinds of rotors, so when designing a decanter centrifuge, the tolerance of the decanter centrifuge’s vibration reduction design to various rotors should be considered. The working range of the decanter centrifuge is very wide, from several thousand revolutions/minute to tens of thousands revolutions/minute. The higher the rotation speed at which the decanter centrifuge vibration occurs, the greater the danger. Once the vibration occurs at high speed, the decanter centrifuge should be stopped at the fastest speed down gear, and all personnel should leave the scene quickly to avoid personal injury in the event of shaft breakage. Never cut off the power. Once the power is cut off, the brake (rapid deceleration) will be gone and the rotor will stall very slowly. Accidents are generally caused by improper operation of the decanter centrifuge, such as the rotor is not placed on the main shaft, the rotor cover is not covered, the swinging basket of the rotor is not placed, etc. Modern decanter centrifuges generally have unbalanced protection functions. Once the vibration of the rotor is greater than a certain size when the decanter centrifuge is started, the decanter centrifuge will automatically slow down and stop. The decanter centrifuge with this performance sometimes misses the report and cannot ensure that no accidents will occur.

The screw conveyor machining errors and decanter centrifuge installation errors will cause the conveyor centroid to deviate from the decanter centrifuge main shaft to varying degrees, therefore, vibrations will occur when the rotor rotates, and these vibrations will be inherent to the decanter centrifuge drive system at certain specific speeds The frequency resonates, causing strong vibration of the entire system. The speed at which this phenomenon occurs is called the critical speed. The rotor will cause vibration when rotating at high speed, but the flexible shaft has an “self-aligning effect”. The principle of action is that the rotor produces a disk effect when rotating at high speed, and the elastic reaction force when the flexible shaft bends pulls the rotor that deviates from the geometric centerline of the main shaft back to the geometric centerline of the main shaft, and the vibration disappears. The amount of unbalance existing in the rotor at this time must also have a certain limit, beyond which the vibration will not disappear.