API SHAKER SCREEN

GN Solids Control is a leading manufacturer of decanter centrifuges. And our supplier from Switzerland is the leading brand in centrifugal hydraulic driving systems. GN and our Swiss supplier have been working together to develop the full hydraulic drive centrifuge for international customers to meet the highest standards.

The hydraulic bowl and displacement drive system drive both the conveyor and the bowl of a decanter centrifuge from the hydraulic pump unit via two hydraulic oil circuits.

The advantage of the fully hydraulic drive centrifuge is its use in high-temperature environments for heavy sludge with a flexible bowl and differential speed. The compact single skid design makes mounting easy.

Model GNLW363D-FHD

• Bowl size 360×1270 mm
• Bowl speed 0-3400 RPM （2328G）
• Differential speed 0-70 RPM
• Motor power 45 KW
• Swiss drive system Hydraulic drive
• Maximum capacity 200GPM (45m3/h)
• Maximum torque 4163 N.M
• Dimension (mm) 3000x2400x1860mm
• Weight (KG) 3400KG

 

PRINCIPLE OF HYDRAULIC DRIVE SYSTEM- FHD PRINCIPLE

The fully hydraulic system consists of A the hydraulic pump unit, B the bowl drive hydraulic motor and C the travel drive.

Hydraulic pump unit A feeds hydraulic oil to scroll drive C and bowl drive B by two separate and individually independent operating circuits

An electric motor A1 drives the combined pumps A2 and A3. Each operating circuit is equipped with its own hydraulic pump and controls. The pump unit contains all adjustment devices and safety valves as well as pressure gauges.

With this system, the rotation speed of the bowl, as well as the differential speed of the scroll, can be manually adjusted independently of each other, continuously and infinitely variable during the operation of the centrifuge.

GN designs and manufactures a hydro-vac sludge processing system. It is also called hydro-vac sludge waste treatment or sewage sludge management system. The sludge processing solution is to use liquid and solids separation equipment to treat the soil, soup, or sludge generated by the Hydrovac or HDD project and produce reusable material for construction and clean water discharge. Normally, the slurry is free of contaminants and comes from the physical location of utilities in the public right-of-way and from directional drilling for laying underground pipes or utilities or other privately owned construction.

Features of the GN Hydrovac sludge processing equipment

• Full package design for turnkey solutions
• Many years of experience in the field have shown
• 5-phase separation system for a better result
• Modular system for quick installation and flexible movement.

 

Main equipment for GN Hydrovac sludge processing system

Feed Hopper Feed Hopper for Hydrovac Truck Slurry Loading

Coarse Vibration Screen For separation of coarse material from Hydrovac slurry

Fine agitator module For processing fine solids from hydro-vac sludge residues

Desilter unit For sediment separation with an underflow dewatering screen

Hydrovac dewatering decanter centrifuge For removal of ultrafine solids from sludge tailings

 

Polymer dosing system To mix and supply polymer to the dewatering centrifuge

chemical products

 

Hydrovac Excavation Introduction:

Hydrovac excavation is a non-destructive, precise, non-mechanical process that uses pressurized water and an industrial-strength vacuum to simultaneously excavate and evacuate soil. As the pressurized water breaks up the soil, it creates laitance that is removed using a powerful vacuum in a waste tank. Hydrovac is currently the only non-destructive process method for the excavation operation. Hydrovac excavation can efficiently and accurately excavate in a variety of soil types and environmental conditions, including frozen ground conditions, clay, hard-packed earth, and in remote areas or locations with limited access. Residual slurry from the Hydrovac excavation will be sent to the Hydrovac slurry processing plant for treatment to recycle the water and construction material.

What type of material can the GN Hydrovac sludge processing system handle?

• Soil / Soup / Mud (mud) generated from hydro-vac excavation
• Horizontal directional drilling mud
• Shield tunneling machine for sludge
• Mud treatment of bored piles.
• Other construction sludge waste

 

GN Polyurethane Screen Panel is commonly used in the dewatering and classification of mineral process and construction industries. GN polyurethane screen panel is manufactured by the processing technology of steel wire covered with polyurethane. It is characterized by firm structure and durability. GN polyurethane screen panel adopts high-quality polyurethane raw materials, which have excellent elasticity, super wear resistance, and good screening efficiency. All polyurethane raw materials and their proportion have been tested and strictly selected, and advanced injection molding technology and precision designed & manufactured molds are used for injection molding, which can guarantee GN polyurethane screen panels are completely customized according to your needs. Opening shape and opening size, screen plate thickness, fixing method, overall size, and other elements can be arbitrarily determined. GN polyurethane screen panel can also realize various surface shapes on the screen plate: retaining dam, anti-smashing strip, guide strip, and guide block to improve the screening efficiency.

 

TECHNICAL CHARACTERISTICS OF GN POLYURETHANE SCREEN PANEL

Polyurethane screen panel has a long service life: Generally, more than 6 months, up to one year. Its service life is 8 ~ 10 times longer than the traditional metal screens, 3 times longer than SS screens, and 3.9 times longer than natural rubber.

The production material of polyurethane screen panels belongs to polymer organic elastomer, which has good wear resistance, flexing resistance, and large loading capacity.

High screening rate, self-cleaning screen surface, anti-plugging.

Polyurethane elastic screen panel uses steel wire or metal frame as the skeleton material, which can improve the bending flexibility and increase the loading capacity.

The cone angle of the screen hole is greater than 140 °, and the water permeability of polyurethane is strong, which can effectively prevent the adhesion of wet fine particles, so it is suitable for the screening and separation of wet fine materials.

The use of metal mold can ensure accurate screen opening, high opening rate, and high screening efficiency.

Multiple choices of hole types: Rectangle, square, circle, and other.

Wide application range and strong industrial applicability: the screening of various materials within the range of 0.1mm-170mm, whether dry or wet, will not affect the screening rate. The advantages of polyurethane screen panel are more fully displayed for dehydration and demineralization screen in the range of 0.5m-3mm

Good moisture resistance. It can be used in water or oil and water medium, which can improve the service efficiency and service life

Adopt the modular installation method (300 * 600mm), which significantly reduces the use cost, is convenient for replacement and installation, and reduces the work intensity of replacement

The various product line, GN polyurethane screen panel can match global well-known brand screening machines.

Low noise. No matter what substances and materials are screened during use, there will be no great noise, reducing the noise level by up to 9 dB. This is a 50% reduction in noise perceived by the human ear.

The polyurethane screen panel is not easy to rust, and the storage life is greatly extended. It can be stored for more than 5 years without affecting the service life.

Whether your screening process is used for dewatering, raw ore classification, desliming, or demineralization, GN’s professional knowledge and experience in customized screening systems can ensure to provide the best solution. GN Polyurethane Screen Panel provides customized solutions for your specific screening needs to ensure the screening effect while achieving less wear and longer service life.

 

 

GN High-Frequency Vibrating Screen is mainly suitable for wet screening, classification, and dewatering treatment of fine-grained materials in Mineral and coal preparation and other industry. High-Frequency Vibrating Screen is a self-developed product of GN company, using the two-degree-of-freedom resonance principle. Designed to use a single vibration source (dual imported vibration motors) to drive to realize the linear vibration of the whole machine. High-Frequency Vibrating Screen has the advantages of a large screening area, adjustable screen box angle, compact structure, excellent performance, and high-cost performance. High-Frequency Vibrating Screen has a unique vibration mode, energy-saving, high screening efficiency, large processing capacity, advanced technology, simple structure, stable and reliable operation, It is one of the most advanced equipment in the field of fine-grained material screening. High-Frequency Vibrating Screen uses Polyurethane Screen Mesh, The opening rate is high (28-45%), and the average life is more than 6 months.

 

HIGH FREQUENCY FINE VIBRATING SCREEN MAIN FEATURES

High-Frequency Vibrating Screen is designed based on the principle of self-synchronization of dual motors, and the screen box assembly moves in a linear line.

Imported vibration motor (Martin motor or OLI motor) with advanced technology, reliable operation, and long trouble-free operation time.

The screen box assembly is arranged in multiple stages, which has the advantages of large processing capacity, high screening efficiency, low power consumption, small dynamic load, simple operation, stable performance, safety and durability, and low maintenance.

The mechanical angle adjustment of the screen box assembly is convenient and reliable.

The overall heat treatment of the screen box can meet the long-term work under high vibration intensity.

International famous brand electrical components, Siemens or Schneider components.

Polyurethane Screen Mesh is adopted, good elasticity, not easy to block the screen, three to four screens can be installed

The screen is fixed by the pulling bolt assembly, which is easy to operate and reliable to fasten.

The surface of the vibrating screen is treated by sandblasting and sprayed with heavy anti-corrosion paint, which has good anti-corrosion performance.

GN Classification Vibrating Screen is widely used in the classification and screening of iron ore, coal, non-ferrous metal ore, building materials, chemical industry, and other materials. The equipment adopts advanced design means such as finite element analysis and anti-fatigue analysis to ensure the reasonable structure, low energy consumption, and large screening and classification capacity of the screening machine. It can be applied in various working conditions that are easy to corrode and wear. Large processing capacity, high efficiency, and stable performance. The size of the screen machine can also be customized according to customer requirements. Two vibrating motors are installed on the GN classification vibrating screen, and the screen body moves in a linear line by using the principle of reverse self-synchronization. The screen body drives the screen panel to vibrate synchronously, transmits the force to the materials on the screen panel, and impacts materials to throw up on the screen surface for layering, and through the screen graded according to the specified particle size. The materials are continuously buffered and input from the feeding trough to the receiving plate screened and graded through the screen surface. And the materials above and below the screen are discharged into the receiving trough above and below the screen respectively to enter the next process link. The included angle between the direction of vibration force and the horizontal direction can be designed according to the properties of the materials on the customer’s site. This included angle determines the running speed of the materials on the screen surface and the processing capacity of the equipment.

 

CLASSIFICATION OF VIBRATING SCREEN-LINEAR MOTION TECHNICAL CHARACTERISTICS & ADVANTAGES

The wallboard is not welded. The steel plate with better impact toughness and cold bending is selected, and the imported HUCK rivet is used for hydraulic tension assembly. This advanced design makes the wallboard free of welding residual stress and material defects, so as to avoid the reduction of fatigue strength of the wallboard due to the above defects.

Through finite element analysis, optimize the structural strength and vibration quality of the screen machine to the greatest extent, reduce stress, and prolong the service life of the equipment.

The fluids touching parts and easily worn parts are sprayed with polyurea by the spraying machine imported from the United States, which is corrosion-resistant, erosion resistant, and wear-resistant.

The post-weld heat treatment process of main components can effectively eliminate the welding stress.

Product serialization to meet the manufacturing requirements of customers under different process conditions; Polyurethane screen panel is modular, more versatile, and more convenient to replace.

The whole machine is installed at a positive inclination angle, and the installation angle is 4 degrees adjustable, which is suitable for the requirements of different process materials.

The plane design of the whole screen surface is more conducive to screening and grading materials and maximizes the effective screening area of the screen surface.

The rubber damping spring design has the advantages of good damping effect, low noise, small resonance field, good resilience, stable mechanical performance, long service life, and low cost.

Because drill cuttings have high solid content, poor flowability, large solid particles, and strong abrasive, the conventional pump cannot meet the transportation needs of drill cuttings. Although screw conveyors can be used for horizontal transportation, there are many drawbacks, such as long installation, large floor area, and liquid backflow when working at an inclined angle.

GN drilling cuttings transfer pump is specially developed to solve the problem of drilling cuttings transportation. GN cuttings transfer pump uses hydraulic cylinder and S-type manifold valve, which is popular in international machinery industry, to transport drill cuttings into S-type manifold valve by reciprocating movement of the hydraulic cylinder. All technical performances and comments on the site are good. This pump is a kind of transfer equipment that can transport the injection of high solid content materials to the destination site through the pipeline.

GN Drilling Cuttings Pump is widely used for moving cuttings which occurred in oil exploitation, trenchless field, river dredging, and some other drilling activities. Materials such as mortar, sludge, coal sludge, mud, and other semi-fluids can also be transferred effectively.

In the drilling mud treatment process, the GN cuttings transfer pump is widely used to transport the drilling cuttings to the cuttings dryer.

Advantages of GN Cuttings Transfer Pump

• Convey drilling cuttings with high solids content, large particles, and poor flowability.
• Compared with the screw conveyor, it occupies a small area, meets the feeding requirements of drilling cuttings dryer without backflow.
• High working efficiency: An international advanced S-type manifold valve is adopted, and the reliability of the system is greatly improved.
• Bearing and seal adopt international famous brand, stable operation and long service life.
• Motor support and hydraulic components, using well-known brands to ensure long-term stable operation.
• Long spray distance: up to 100 meters horizontally and 40 meters vertically.
• A centralized lubrication system effectively prolongs the life of wearing parts.
• Frame type design is adopted outside the cutter pump, which is compact and flexible, convenient to lift and move, and simple to maintain.
• The lift design meets the operational requirements of the offshore platform and CCS certification or DNV 2.7-1 lift certification can be performed.
• Motor and control boxes can be equipped with CNEX Zone 1, ATEX Zone 1 or IEC Ex Zone 1 explosion-proof.

GN Solids Control designs and manufactures different sizes of liquid sludge plants according to your needs. We can design and build as many vertical tanks, rectangular tanks, round tanks, etc. depending on your space and requirements.

 

The Liquid Mud Plant is installed for one main purpose and that is to maintain good properties of the drilling mud in the wellbore as much as possible. Within each drilling fluid supply base, you can usually find which “Mud” companies are working offshore from this base, as they are represented in the form of a Liquid Mud Plant. This liquid mud plant is used to handle (mix, dilute, treat, adjust) various drilling fluids to be used in the wells supported by this supply base. You can also find expanded drilling waste management (DWM) or solids control processing for drilling mud here, usually in the form of decanter centrifuges used to treat used mud that has been recharged at the supply base. . Offshore supply vessels are used to transport any drilling or completion fluids to and from the Slurry Plant that cannot be mixed or treated on-site.
Types of tanks for slurry plants
 Oil-based mud tank
 Water-based mud tank
base oil tank
 Water tank
 Brine tank (fiberglass tank or liner protection)
 Refrigerated tank
 Mud mixing tank
Equipment used for a liquid sludge plant
Typically, a decanter centrifuge manufactured by GN Solids Control will be used for drilling mud solids control. Sometimes customers will need a vibratory screen for coarse solids removal. Mud agitators are mounted on mud storage or mixing tanks to agitate mud and prevent the settling of solids in fluids. Sometimes GN mud guns will be needed for agitation, especially for the corners of the mud tank. Mud mixing and chemical addition are done by mud mixing hoppers and centrifugal pumps. GN Solids Control manufactures the Decanter Centrifuge, Shale Shaker, Mud Agitator, Mud Gun, Centrifugal Pump, and Mud Mixing Hoppers for Liquid Mud Plant.

 

GN Solids Control has different sizes of centrifugal decanter for the treatment of sewage sludge. We have a specially designed decanter centrifuge to meet the requirements of sewage treatment plants and the sewage industry.

The GN decanter centrifuge can be used to dewater and thicken the suspension of wastewater. The unique properties of the centrifuge bowl with a specially designed gearbox drive and intelligent control system will guarantee the performance of the NG municipal sewage sludge decanter centrifuge. To achieve maximum dewatering and thickening of municipal sewage slurry, GN VFD or hydraulic drive centrifuge is available to set differential speed from bowl speed. The purpose of GN’s design for environmental solutions decanter centrifuges is to have reliable performance as well as the best price/performance ratio for investors.

Advantages of Sewage Sludge Decanter Centrifuge

VFD drive system and hydraulic drive are available for options.

Specially designed for the treatment of sewage sludge to save clean water

Cost-effective solutions to meet the customer’s purpose.

High-speed balancing machine to ensure stable operation.

The machine is compact and easy to use for maintenance work.

Easy on-site parts exchange to minimize downtime.

 

Municipal sewage sludge treatment includes dewatering and thickening by the decanter centrifuge. The objective of sewage sludge dewatering is the maximum reduction of the volume of the sewage slurry. Due to the dry matter in the sludge, it is very important to save the sludge disposal cost.

For sludge thickening, to improve overall performance, efficient separation and lower polymer consumption are important for municipal sewage sludge treatment plants.

GN branches and partners around the world are ready to help our customers and provide solutions with our decanter centrifuge for your municipal sewage sludge treatment.

 

GN screw press sludge dewatering machine is a kind of economical and environmentally friendly sludge dewatering equipment. It is a new type of sludge extrusion dewatering equipment using the principle of screw extrusion, through the strong compression force generated by the change of diameter and pitch of the screw, and the small gap between the floating ring and the fixed ring, to perform solids -liquid separation. GN dewatering screw press is composed of the fully automatic control cabinet, flocculation modulation box, sludge thickening, and dewatering device, and liquid collecting tank. GN dewatering screw press has automatic control technology, which can realize fully automatic flocculation operation and continuously complete sludge thickening and squeezing, finally return or discharge collected filtrate.

 

GN screw press dewatering machine is widely used in wastewater treatment projects of municipal, aquaculture, food, starch, petroleum, pharmaceutical, chemical, paper, leather, and other industries.

 

Features of screw press dehydrator machine:

• The main body of the screw press sludge dewatering machine is a filtration device composed of a fixed ring and a movable ring, in which the screw axis runs. The front section is for concentration and the rear section for dehydration.
• The filtrate gap formed between the fixed ring and the moving ring of the dewatering screw press and the pitch of the screw shaft gradually decreased from the concentrating section to the dewatering section.
• The rotation of the screw press shaft not only pushes the sludge from the concentration section to the dewatering section but also continuously drives the moving ring to clean the filter space and prevent clogging.
• After gravity concentration in the concentration section, the sludge is transported to the dewatering section. In the process of advancing, with the gradual decrease of the filtrate space and the pitch of the screw, and the locking effect of the backpressure plate, the large internal pressure is generated; leader, the volume is constantly reduced, in order to achieve the purpose of complete dehydration.
• The dewatering screw press is generally applicable to sludge concentration of 2000mg/L-50000mg/L

The GN vibrating shaker, hydrocyclone and decanter centrifuge are widely used in the mining industry for mineral, raw material, and ore extraction processes. GN Solids Control separation equipment is for the separation of different solids to clarify minerals or recycle water. GN separation technology has been applied worldwide to support the mining industry. Our client uses our separation equipment to increase their profits and optimize their procedures with smart solutions.

 

Separation solutions in mineral processing

Very different ore processing, such as gold and silver, lanthanoids, lead and zinc, nickel and copper, platinum are suitable to be processed with GN separation equipment. The ore processing operation varies for different customers, but separation or clarification is very important. Especially in the production of precious and non-precious metals. Among the separation equipment for mineral processing, the GN decanter centrifuge is the key performance equipment.

Separation equipment in mineral processing

GN decanter centrifuge is the key equipment for processing different kinds of minerals including calcium carbonate, zinc sulfate, aluminum hydroxide, kaolin, barite, titanium dioxide, etc.

There are many options for methods in mineral processing, it can be mechanical processing or chemical processing, GN decanter centrifuge designed for the mining industry is popular for cosmetic processing for the paint industry and processing in the paint industry. ceramics

Advantage of GN separation equipment for the mining industry

• More equipment options from vibrating screen to hydro cyclones and decanter centrifuges.
• Super protection against wear through tungsten carbide or special ceramics.
• Intelligent PLC and HMI control allow customers continuous and fully automatic operation to save labor.
• Cost-effective solution specially designed for your project to produce high quality and purity of the final product.
• Energy-saving, less footprint, ecological.
• Sample testing services to select the best solutions for your application.