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The demands made of particle size analysis are constantly increasing. This is also reflected in the greater requirements made in the new standard ISO 3310. In order to adapt our test sieves to these new requirements, RETSCH has developed a completely new manufacturing process that guarantees a previously unattained quality and consistency in sieve production (200 x 50 mm, 200 x 25 mm, 203 x 50 mm (8"x 2")). In addition, a logistic manufacturing system makes it possible to record each and every material used in the process.
Product Advantages
- one piece construction and fabric-transition without any grooves to prevent cross contamination (no solder, no residues, etc.)
- a high degree of corrosion resistance and ease of cleaning due to high-alloy stainless steel (specification: 316)
- 15% lighter than traditional sieves while at the same time increasing the free sieve area
- previously unattained product quality due to fully automatic production and extensive optical inspection with optimum design
- innovative resistance welding technology guarantees permanently tight sieve fabric
- maximum stability and optimum sealing when used in sieve stacks
- clear and precise labeling of the sieves with full traceability based on individualized laser engraving
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Retsch sieve shakers are used in research & development, quality control of raw materials, intermediate products and end products, and in production control. The AS 200 series enables every user to select a suitable device according to his individual requirements, profile and budget. The AS 200 control meets the highest standards in quality assurance and offers a microprocessor-controlled measuring and control system, patented and unique throughout the world, for constant vibration. It can be calibrated, and ensures for the first time 100% reproducibility of sieving results, and not only for one device, but all AS 200 control units one to another. This provides the prerequisite for monitoring inspection, measuring and test equipment according to ISO 9000.
Further models: AS 300 control, AS 400 control |
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The Cleveland Vibrator Company, along with its affiliate HK Technologies, introduces a new line of ultrasonic screening equipment utilizing dual vibrator drives. This dual motor separator provides for three control variables: vibrator force, frequency, and drive angle. This design concept results in a three dimensional motion thus allowing for greater throughput of difficult to screen products. This distinctive vibratory action coupled with HK Technologies unique ultrasonic deblinding system provides a screener that can handle many difficult screening applications. The transducer is attached to the aluminum rim with the wire cloth attached on the bottom (like a sieve). Unlike competitive products, the ultrasonic vibration transfers from the rim to the wire cloth to facilitate the throughput of fines by introducing high frequency movement to the individual wires. Helps eliminate blinding. This unique transfer increases the life of the wire cloth as traditional methods allow heat from the transducer to prematurely fail the fine wires.
Models are available in 24, and 36" diameter screen sizes. Screen sizes down to 635 mesh (20 micron). All screens are re-screenable.
Cleveland Vibrator also manufactures a complete line of brute force screeners as well as fine powder, laboratory screeners. Ask about our HyBrute, a brute force screener with the addition of ultrasonic deblinding.
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Kason Vibroscreen® circular vibratory screeners separate bulk solid materials from solids and slurries using multi-plane, inertial vibration that causes particles to pass through apertures in the screen or to travel across the screen surface in controlled pathways.
The screeners range in diameter from 18" to 100" (460mm to 2540mm) and are offered with single or multiple screening decks, separating particles in one to five predetermined sizes ranging from 2" (50mm) to 400 mesh (37 microns).
A wide range of models and specialized options satisfy a broad range of sifting, scalping, classifying, de-dusting and dewatering applications from the most simple to the most challenging, in capacities ranging from several pounds/kilograms to more than 30 metric tons per hour.
All Kason circular vibratory screeners are offered in gravity-fed and in-line pneumatic models for batch or continuous operation, and are available to industrial, food, dairy and pharmaceutical standards.
The screeners are offered in two configurations, distinguished by the number and location of imbalanced-weight gyratory motors employed to impart vibration. |
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| Sweco offers the industry’s widest variety of screen solutions to meet any separation challenge. For unique screening applications, Sweco custom manufactures screens to meet any requirements. Sweco manufactures sanitary screens which are fashioned to meet the rigorous design requirements of food and pharmaceutical customers and constructed of FDA approved materials. Sweco screens are available to fit nearly all circular separators. So, regardless of what type of machine you have, you can equip it with the best screens on the market. Whatever your screening needs are, Sweco has your solution. |
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Cross-Flo Static Scalping Sieve
Scalps coarse, free-flowing dry solids at ultra high rates
The CROSS-FLO static sieve continuously removes oversize particles from coarse, free-flowing, dry bulk solids at rates to 100 tons (91 metric tons) per hour. The fixed-slope, heavy-duty, permanent bar screen is offered with apertures from .25" to 3" (6mm to 76mm). Because the sieve requires no electrical drive or screen changes, initial cost and operational cost are low. Standard units are available in widths from 2' to 6' (610mm to 1830mm) in 1' (305mm) increments, with larger sizes available on a custom basis. |
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The Micron Air Jet Sieve utilizes a dynamic sifting principle that enhances the accuracy and reproducibility of particle size analysis. Use of this device has become a preferred method for such tasks as quality assurance of incoming raw materials and the confirmation of final product specifications.
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High capacity gyratory units for high viscosity liquid/solid separation, and wet or dry classification. Easy operation when tuning to specific feed rate, product and separation requirements. No damping under loads. Long screen life. Inline screeners are also available.
Circular Screen Separators
Eriez' range of models allows selection particular to specific and unique material application requirements. Some of the models available will be ideal for processing all types of dry materials, while others will work best for slurries, waste water and other dewatering applications.
Linear Screen Separator
Vibratory screeners serve as efficient screening separators for a wide variety of materials. Eriez has standard and heavy duty models for the majority of screening applications. Special units can be ordered with multiple drives for greater capacities. In addition, a wide variety of standard and special trays are available. |
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With their innovative and practical features, the new generation of FRITSCH Sieve Shakers satisfy all requirements for accurate and reproducible sieving analysis and even exceed requirements in many areas.
These instruments offer maximum comfort and precision with automatic amplitude control, programme selection,control and evaluation software as well as high-quality sieve stack tensioning system.
The top model ANALYSETTE 3 PRO can be integrated into any quality management system according to DIN EN ISO 9000:2001 as a testing instrument thanks to state-of-theart electronics and maximum reliability.
FRITSCH Sieve Shakers are available for sieves up to 450 mm in diameter for dry, wet and micro-precision sieving. The automatic sieving analysis is performed by the free control and evaluation software AUTOSIEVE. |
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Labtech Essa maintains substantial stocks of our own privately labelled test sieves to BS 410 (AS 1152). These are manufactured to internationally recognised quality assurance standards and are checked and certified for compliance to BS 410. Each is issued with a unique serial number and a Conformance certificate for full product traceability.
Labtech Essa specialise in sieves of stainless or plated steel construction that are inherently more robust, durable and corrosion and corrosion resistant than traditional brass sieves.
Labtech Essa sieves are manufactured to metric dimensions and will interchange with other metric frames. Adaptors are available for customers needing to interchange with older imperial dimension sieves or US made sieves. |
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An electro-mechanical shaker for suspended mounting and carrying up to two off 450mm diameter standard test sieves
This unique shaker is specifically designed to be fitted with up to two off 450mm diameter test sieves of any aperture. Drive is by a special 240V, 50hz single phase electric motor to a rotating eccentric mass assembly that causes the sieves to oscillate in a mainly horizontal plain.
It is supplied as standard to process essentially dry materials but a wet sieving option is available. The shaker can be suspended from any suitably robust hook.
An optional wheel mounted stand with a manual winch is available to suspend the sieve stack at a maximum height equivalent to a 220 litre drum. The sieve stack can be lowered to floor level. |
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Dry Processing – Classifying + Sieving
Suitable for sieving extremely difficult and abrasive materials with sieve mesh widths of approx. 25 – 500 µm.
Control sieves and safety sieves.
Sieving machine with an oscillating slotted nozzle underneath the sieve gauze.
With vibration shaker for transport of the coarse material.
Pneumatic sieve tensioning device.
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Weston circular screen separator has been produced for more than 40 years and stand out for its high screen efficiency, strength and reliability. These are the main qualities that makes Weston sieve the most sold and required sieve from our customers.
It segregates solids from liquids or dry material into various particle sizes ranging from 51 mm to 0,033 mm (400 mesh).
It is particularly utilized in food, chemical and pharmaceutical industry and in all sectors of application where the sieve need to be used on several product lines.
Easy to install, can separate particles in 2 to 3 sizes with up to 2 screen decks incorporated in one separator.
Main characteristics:
- screen frames can be changed quickly and easily (change activity requires 1 minute);
- screen can be equipped with various cleaning system as: everclean, starbrush and the innovative ultrasonic cleaning system;
- vibration movement is easy to regulate;
- operating cost are very low;
- can be easily adapted to customer needs: Weston sieve has wheels and can be moved and installed into different product lines;
- product contact areas are easy to assemble, mirror polished and in stainless steel AISI 304 or AISI 316.
- suitable for applications that require screening solids from a large volume of heavy, high-viscosity liquids (liquid panting and glue industry).
Weston sieve is available in 3 different models: Weston 503, Weston 605 e Rotowest. |
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Specifically designed for sifting of dry particulate, the Sweco GyraMax™ Gyratory Sifter maximizes productivity, provides maximum vibration control and enables maximum recovery of clean, acceptable product.
Maximum Productivity
The drive unit is designed into the center of the machine to get the same screening efficiency over the entire screen surface. With dynamic balancing and no mechanical gearboxes, screens operate at 300 rpm versus most conventional 150 - 180 rpm screeners. The consistent motion across the screen combined with the high speed make our ball box cleaning very efficient. The result is maximum efficiency and maximum capacity for your application with no downtime for cleaning screens. Additionally, productivity can be maximized by minimizing your downtime. The GyraMax offers quick and efficient screen changing through easy screen removal without disassembling your machine.
Maximum Vibration Control
All screens are dynamically balanced, allowing you to put the screen at the top of your plant, without worrying about building vibration. Without anchoring, every machine is factory tested to assure the balance meets our rigid standards.
Maximum Product Recovery
Our goal is to recover the maximum amount of good product, as well as removing all of the rejects.
Applications
Applications are numerous. Here are just a few:
• Activated Carbon
• Bentonite
• Detergent
• Fertilizer
• Glass (crushed)
• Limestone
• Plastic Pellets
• Salt
• Sugar
• Tobacco |
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Sift, scalp, de-lump and de-water virtually any bulk solid or slurry
The Kason Centri-Sifter® is a versatile, high capacity, compact and economical centrifugal sifter used for screening a wide variety of powders or granular materials, including chemicals, plastics and resins, foods, dairy products, pharmaceuticals and biologicals. This equipment is the ideal choice for continuous scalping of dry or moist materials, even those that tend to ball or agglomerate as these units delump and deagglomerate while screening. The Centri-Sifter Screener is also extremely effective as a liquid/solids separator.
Centri-Sifter centrifugal sifters are designed for gravity-fed applications, and for sifting in-line with pneumatic conveying systems. They are available as single and twin models and low profile units, and offered in a broad range of standard, modified, and custom configurations. All are available with belt drive or direct drive. Units may be free-standing or adapted for easy mounting on new or existing process equipment. On gravity-fed models, a large access door allows inspection and cleaning. In-line pneumatic units offer large ports for inspection. Removable end housings allow rapid cleaning and screen changes. |
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The requirements and conditions for product cleanness an constant product quality are immense.
Qualified sifters of high standard and performance offer an excellent ratio of price and capacity, with the purpose of quality control management by separating foreign particles from the product. Mounted before a filling unit, the final product should proof its defined quality. There are any further applications like:
=>control sieving of powders and granules
=>classification
=>sieving of suspension
=>desaglomeration of lumps
=>draining
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With their constant processing design, CSC type continuous screen changers are able to meet the most stringent quality requirements for melt filtration. The type HSC, FSC and DSC discontinuous screen changers are a simple, robust, and affordable alternative for applications where a short interruption in the melt flow is possible for making screen changes.
The DV continuous divert and dump valve was developed specifically to meet the requirements of underwater pelletizing. It features a unique design that provides bump-less changeovers and eliminates the possibility of a deadhead condition.
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The linear and circular-motion screens made by Schenck Process are available as single or multiple-deck units, with or without spraying systems.
Applications:
- protective screening
- scalping
- classifying
- de-watering
- screening of up to 1000° C hot materials
Range of use:
- sand + gravel preparation
- minerals, coal, ore, and steel industries
- foundries
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Metso Minerals offers numerous vibrating equipment brands that the industry has grown to respect and trust - Hewitt Robins, Tyler, Seco, Nordberg and Svedala.
Equipped with over 400 years of combined vibrating equipment experience, the North American Vibrating Equipment Group is continuously developing new and improved products to keep up with the ever-changing demands of both the aggregate and mining industries. |
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Gravel, sand, coal and many basic materials must cover a long path before they are suitable for further processing. Vibration conveyors are an important part of this path. They drain the excavated sand, screen gravel according to grain sizes, take the load off breakers or mills of fine-grained material or assist in the cleaning of wash water. They are particularly for use in the basic materials industry, where vibration conveyors are characterized by their wear-poor, rugged construction and lifetime duration.
Precise screening to grain sizes in the range from 25 µm to 500 mm, high service and temperature resistance, for example in the case of supplying components to the melt furnace in glass production, are also advantages of vibration technology. |
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