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The Source for Dry Processing and Bulk Handling Technology

Screening, Classifying, & Separation Focus - October 09

October 8, 2009

Suspended Magnets
Suspended electromagnetic separators handle high-volume product stream flows that exceed the limitations of standard permanent suspended magnets. Available in quick-cleaning (ERBM) or self-cleaning (ECBS) models, these products remove both large and small types of damaging tramp iron from product streams conveyed by vibratory beds or belts. Featuring a newly upgraded and reengineered coil, the weight and the cost of the separators have been reduced. Available in widths up to 60 in. (quick-clean) or 72 in. (self-clean), these magnets are designed to operate in extremely rugged conditions.
Magnetic Products Inc., Highland, MI 800-544-5930 www.mpimagnet.com

Jet Sieve
The MLS 200 jet sieve is available for small volumes and test applications. It uses standard 8-in. sieves, prevents inaccurate results due to screen blinding, and de-dusts statically bound fines. Used for all dry materials from 20 to 1000 μm, it is ideal for electrostatic materials and on products that are predisposed to blinding.
Minox-Elcan, Mamaroneck, NY 800-283-5226 www.minox-elcan.com

Vibratory Separator
The MX separator is a new generation separator with design features to increase safety, provide a stronger construction, and allow for a more sanitary process. The totally enclosed weight guard prevents “reach-in” injuries, complying with CE standards. Making use of the appropriate motor, the MX also complies with ATEX standards. The extremely rugged construction utilizes conical construction, rather than flat plates, which creates a more rigid geometric structure. The open base construction allows for cleaning underneath the unit and preventing dirt and product buildup.
Sweco, Florence, KY 859-371-4360 www.sweco.com

Magnetic Bullet Separator
With no moving parts and a magnet system that is warranted for life against loss of magnetic strength, the Mastermag magnetic bullet separator will eliminate tramp ferrous metals from ending up in the finished product. It prevents costly repairs, eliminates downtime, and is able to ship a product free from metal contamination. This powerful rare earth or permanent ceramic magnetic device is an efficient, cost-effective method for keeping product ferrous-free in chutes, pipelines, or ducted systems. The magnet has been designed for quick and easy cleaning, reducing downtime to a minimum.
Global Equipment Mktg. Inc., Boca Raton, FL 866-750-8662 www.globalmagnetics.com

Vertical Fall Metal Detector
The compact MET30+ vertical fall metal detector is 25% smaller, and provides high levels of protection for incoming bulk raw materials. By incorporating a quick release reject system, the amount of downtime and products rejected are reduced, while the quality of the material remains protected. The short height of the pneumatic reject system provides fast-acting removal of contaminated products, which increases efficiency and throughput rate.
Lock Inspection Systems, Fitchburg, MA 800-227-5539 www.lockinspection.com

Screening, Classifying, & Separation Gyratory Sifter
This all-metal Model CS-1 gyratory sifter is capable of providing from one to four separations of any dry product from ¼ in. down to 400 mesh. It has the ability to screen up to 50,000 lb/hr and its passive, gentle gyratory motion keeps the product in constant contact with the screen for maximum capacity. The versatile unit provides from 5 to 35 sq ft of screening surface simply by adding screen decks, all within a 4 × 4 ft footprint to minimize the space required for operation. The sifter adheres to the standards set by the Baking Industry Sanitation Standards Committee.
Sifter Parts & Service Inc., Wesley Chapel, FL 800-367-3591 www.sifterparts.com

Gravity Separator
The T-20 offers 20 sq ft of separation surface and superior separation performance in a compact, economical design. Simplified and rugged controls ensure that machine settings will be trouble-free and drift-free. The material is fed onto a flat porous deck that is sloped in two directions. Low-pressure air is forced through the deck to fluidize and stratify the material bed. A vibrating action is applied to the deck to convey the heavier particles, which have sunk to the bottom of the material bed and up the inclination of the deck. Lighter particles are suspended in the rising airflow and slide down the slope of the deck. The final result, presented at the discharge face of the deck, is a continuous gradation of material from the densest, largest particles to the lightest, smallest particles.
Triple/S Dynamics, Dallas, TX 214-828-8604 www.sssdynamics.com

In-Line Sifter
Designed with a high net screening area, the QA36 pneumatic in-line sifter is a HACCP solution for operations with moderate to high production volumes. Manufactured with a high level of sanitation in mind, as well as ease of maintenance using lightweight components, and form-fitting, snap-on neoprene gaskets, the unit utilizes a gentle gyratory sifting motion. Great Western Manufacturing Company, Inc.,
Leavenworth, KS 913-682-2291 www.gwmfg.com

Inverting Filter Centrifuge
The HF model centrifuge incorporates inverting filter, thin cake processing technology, and PAC direct contact drying of the material all in one machine for separation and filtration. With these combinations of technologies, it is possible to select the desired final moisture content of the product when it discharges out of the centrifuge. Other advantages include no residual heel remains on the filter cloth, repeatable batch quality, and full flexible process recipe management.
Heinkel USA, Swedesboro, NJ 856-467-3399 www.heinkelusa.com

Low-Maintenance Screeners
Based on the proven design of its trough feeders and conveyors, this line of low-maintenance single- and double-deck linear screeners includes simple, rugged machines requiring a minimum amount of maintenance. Standard machines are available with screen decks up to 4 × 10 ft. and variable speed controls provide rate adjustment. Free testing is available for each screening application.
Vibra Screw Inc., Totowa, NJ 973-256-7410 www.vibrascrew.com

Continuous-Cleaning Magnetic Drawer-in-Housing
This continuous-clean, magnetic drawer-in-housing is designed for ferrous metal separation in dry processing systems. It is ideal for remote magnet installation locations, applications requiring frequent cleaning, and fully automated processing systems. Magnetic tubes are aligned on alternating centers for multiple row drawer configurations, forcing the product flow in a zigzag pattern while contacting the magnetic tubes. The cascade effect ensures maximum tramp metal separation by causing product to have repeated and intimate contact with magnetic tubes and ensuring maximum capture of contaminants.
Industrial Magnetics Inc., Boyne City, MI 800-662-4638 www.magnetics.com

Classifier
The Raymond Jet-Stream classifier is designed to meet exacting product specifications in applications requiring the production of ultrafine powders 10 µm APS and lower, such as coatings, extenders, fillers, pigments, ceramics, metallic powders, cosmetics, and chemicals. The classifier design allows maximum control of particle top size and distribution, optimum product recovery, and less thermal degradation. The classifier is well suited for use in closed circuit with a pulverizer, where it improves the efficiency of the operation by lowering overall operating costs. System design features include improved feed introduction, secondary air recovery, and flexible operation.
Alstom Power Inc., Air Preheater Co., Raymond Operations, Warrenville, IL 630-393-1000 www.airpreheatercompany.com

Portable Reclaim Sifter
This portable reclaim sifter is capable of batch sifting up to 600 lb/hr and may be operated sitting atop a drum or using the optional adjustable rolling base for easy relocation around the plant. The all stainless-steel construction and waterproof motor facilitate cleaning. A custom RCN output dust chute allows quick changes between collection containers and oversized rubber vibration dampeners mean quiet operation. One framed screen and the overs spout with a sliding shutoff door are included. Additional framed screens and motor speed controller are available.
American Fabric Filter Co., Wesley Chapel, FL 800-367-3591 www.americanfabricfilter.com

Centrifugal Sifter
Utilizing a clean and simple design, materials are fed into the sifter chamber by means of a feeder screw. Hundreds of screen sizes are available in various materials to optimize separation of oversize product or fines from the process stream. Screens are totally removable for fast changeout and cleaning. These sifters can be used for scalping, classification, de-dusting, de-watering, and de-agglomerating applications.
S. Howes Inc., Silver Creek, NY 716-934-2611 www.showes.com

Ultrasonic Screener
This screener utilizes a combination of gyratory vibration and ultrasonics so processes are more efficient, have greater throughput, and less near-size plugging. This is done by converting electrical energy into high-frequency energy, which is then converted into ultrasonic oscillation by the converter. This ultrasonic system uses frequency variation generators that excite the screen over a larger bandwidth, eliminating the costly and timely process of tuning the screen’s ring to meet a sharp resonance.
Midwestern Industries, Massillon, OH 330-837-4203 www.midwesternind.com

Magnetic Separators
The ProGrade series of magnetic separators features standard magnetic plates, grates, traps, and tubes. Designed for general industry assemblies, the ProGrade Ceramic series targets the removal of medium to large ferrous contamination. These products offer basic protection from tramp metals damaging downstream equipment. Ideal for improving purity in general industry and some food and chemical applications, the ProGrade rare earth series targets small, fine, weakly magnetic ferrous contamination. Assemblies are designed with precise attention to welds and finish, and feature stainless-steel construction and high-power magnets.
Eriez Magnetics, Erie, PA 888-300-3743 www.eriez.com

Centrifugal Sifter Screens
Kemutec manufactures screens for a wide range of centrifugal sifters including those from most other manufacturers. Available in nylon mesh, woven wire mesh, wedge wire slotted, and perforated plate, these screens are manufactured in the company’s ISO 9001-compliant production facility. Hand-sewn nylon mesh screens are available for fine to coarse sifting in various colors and fabrics for a variety of powder processing applications. An expert spares coordinator will identify the required screen and will ensure quick delivery when it is most needed. This ensures the sifting equipment provides the best possible performance.
Kemutec, Bristol, PA 215-788-8013 www.kemutec.com

Gap-Free Classifier
The Vibroscreen gap-free classifier offers nonmetallic material contact surfaces and quick-cleaning features designed to eliminate contamination of ultrapure products. The 60-in.-diam classifier is configured with three screening decks for removing oversize particles and de-dusting, while separating onsize material into two size fractions. Interior surfaces are clad with PTFE, and screens constructed of nylon, eliminating metal contact as required for the most metal contamination-sensitive bulk materials. The screener is also equipped with gap-free screen frames, quick-release U clamps, radius corners, a domed lid, an Air-Lift device to raise the frames, and continuous ground and polished welds, thereby allowing rapid, thorough cleaning.
Kason Corp., Millburn, NJ 973-467-8140 www.kason.com

Dry Separation Screener
The Apex dry separation screener is a high-efficiency solution in polishing and load-out applications. High capacity and durability increase uptime and yield, and maintenance is easy. The screener uses a long-stroke, low-frequency motion to achieve rapid stratification without agitation and remixing, thus delivering consistent particle size at high rates. Nearly horizontal decks reduce product loss, so overall yield can exceed 90%.
Rotex Global LLC, Cincinnati, OH 800-453-2321 www.rotex.com