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Powder/Bulk Solids

The Source for Dry Processing and Bulk Handling Technology

Size Reduction Focus - May 09

April 21, 2009

Horizontal Shaft Impactor
The Grand Slam secondary horizontal shaft impactor now features two new product developments: a new grinding path and an apron adjustment system. This impactor series uses high-chrome metallurgy to increase the wear life of machine components, thereby reducing metal replacement costs. Used for a wide variety of industrial applications including aluminum dross and brick, clay, shale, grog, refractory brick, ceramics, floor tile, glass, bakery waste, and scrap carbide recycling, the unit reduces material size more efficiently with maximum uptime. The Crush Plus grinding path system creates a third crushing chamber to maximize one-pass product yield, minimize oversize, improve material soundness, and produces highly cubical product. The Max-Yield automated apron adjustment system maintains gap setting adjustment for aprons and the grinding path.
Stedman, Aurora, IN 800-262-5401 www.stedman-machine.com

Power Graters
This family of power graters process soft to medium-hard products such as filter cakes, foodstuffs, plastics, and salts in nominal capacities ranging from 2 to 4 tn/hr. All models are available with motor options and low-speed drives for low operating sound levels. Various materials of construction—mild steel, stainless steel, Hastalloy, etc.—and screen sizes are also available to suit the mechanical and chemical elements of the application. Custom designs include sanitary construction, mount stands, and
integrated controls.
S. Howes Inc., Silver Creek, NY 888-255-2611 www.showes.com

The Delumper 1075 LP crusher reduces hard or soft, heat-sensitive, sticky, or wet agglomerates and lumps at high volume without degrading the material or causing rise in temperature. The unit’s low-friction cutting action is ideal for large quantities of sludge cake, agglomerated chemicals, plastics, fats, waxes, or solid waste. It employs extended cutting teeth that rotate completely through a heavy bar cage, self-clearing the slots with each rotation. Output sizes are adjustable by changing the speed or the comb.
Franklin Miller Inc., Livingston, NJ 800-932-0599 www.franklinmiller.com

Roller Mill
The VRM roller mill provides efficient fine grinding of soft to medium-hard materials. Designed for continuous operation, its concept is based on the combination of a high-quality mill body and efficient TC and ALPHA classifiers. The mill body is designed with two or three rollers and provides a sharp and very fine top cut down to d98 < 6 µm. The unit can be used for fine grinding and classification of a wide variety of materials including calcium carbonate, dolomite, talc, bentonite, barites, petroleum, coke, calcium oxide, and gypsum.
Sweco, Florence, KY 800-807-9326 www.sweco.com

High-Speed Pulverizers
The Universal Mikro Pulverizer (UMP) is a pharmaceutical impact mill that offers the latest milling technology, coupled with a new ergonomic design and easy clean features. Now one mill can provide finished materials ranging from coarse granulations to ultrafine particle-size distributions. The results come from the capability to interchange a variety of internal grinding elements coupled with a rotor tip speed that can be varied from 40 to 160 m/sec. The result is a flexible machine that processes a wide range of APIs and excipients. There are three model sizes available to handle capacities for a few kilograms per hour to several hundred kilograms per hour. They are offered in a number of configurations to meet specific application requirements, including closed-loop inert processing, 150 psi high-pressure systems, and high-containment options.
Hosokawa Micron Powder Systems, Summit, NJ 800-526-4491 www.hmicronpowder.com

Classifier Mills
The CLM-series of classifier mills is a combination of two stages of closed-circuit grinding and air classification all in one unit. These mills can be used to handle difficult-to-grind products and products requiring a narrow particle distribution. Materials that are difficult to grind, and those that require a finer grind or a narrower particle distribution curve, often require the capabilities of the CLM classifier mill. Oversized particles that are larger than specified are rejected by the classifier and are directed to a separate part of the grinding rotor where they are reground and then reclassified.
Prater-Sterling, Bolingbrook, IL 630-759-9595 www.prater-sterling.com

Hammer Mill
The Rigimill hammer mill is a rigid blade design mill that suits applications from lab use to full production. The unit can be used for grinding or finishing products from grains to cake mix. Mills are available in agricultural, chemical, or sanitary construction, and in 16- and 24-in. models, which range in size from 6 to 48 in. wide. A variety of blade shapes and screen sizes are available. The mill housing is a welded construction with a removable front cover for easy access to the grinding chamber.
Machine and Process Design Inc., Anoka, MN 877-224-0653 www.mpd-inc.com

This crusher/prechopper can handle bulk solids up to 24 in. in diameter. Available in four sizes—C12, C15, C18, and C24—with OSHA-safe 32-in.-tall inlets and discharge transitions built to suit, the C-series is designed to mate the company’s M12, M15, and M18 disintegrators. Features include all Type 304 stainless-steel construction, and 7.5–15-hp washdown-duty motors.
Corenco Inc., Sebastopol, CA 888-267-3626 www.sizereduction.com

Jet Pulverizer
The new 15-in. sanitary Micron-Master jet pulverizer offers processing capabilities into the commercial scale with a processing range of 50–400 PPH. The family of jet pulverizers is now available in 1-, 2-, 4-, 8-, 12-, and 15-in. sizes. Each is constructed of polished Type 316 stainless steel and furnished with sanitary clamp fasteners for easy cleaning and fast turnaround with no tools required. Liner options include stainless steel and PTFE. Mills can be combined with select process equipment to become a complete turnkey processing system.
The Jet Pulverizer Co., Moorestown, NJ 800-670-9695 www.jetpulverizer.com

Laboratory Grinder
Constructed from either carbon or stainless steel, the compact yet robust W-series laboratory grinder is ideal for university research labs, sample testing, and pilot-scale processing. The portable and scalable unit is highly versatile and can reduce most materials to a fine granular or powder consistency. Easily changed screens, a variety of hammer sizes and styles, and optional variable-speed drive allow for processing to virtually any finished size required. All grinders are custom configured to meet the specific needs of the application.
Schutte-Buffalo Hammermill, Buffalo, NY 716-855-1555 www.hammermills.com

Mini Laboratory Circulation Attritor
This Q-03 laboratory-sized circulation grinding mill features a special-sized processing tank, a mechanical shaft seal, and an explosionproof system, all on a customized frame. The design allows for narrow particle-size distribution and temperature control. The unit utilizes a separate holding tank that is typically 10 times the size of the attritor grinding tank. During the circulation process, the material makes multiple passes through the grinding chamber until the desired particle size is achieved.
Union Process Inc., Akron, OH 330-929-3333 www.unionprocess.com

Lump Breakers
An inverted pillow block assembly prevents buildup of material on pillow block housing, thus increasing bearing life. Bearings are designed with a B-10 life in excess of 100,000 hours. Inspection doors on the front and rear of the unit allow access to the mill without disassembly. With a reversing motor starter and double hook rotor-fingers, the machines can be run in either direction, providing twice the wear of single direction lump breakers.
American Pulverizer Co., St. Louis, MO 314-781-6100 www.ampulverizer.com

Explosion-Resistant Pulverizer
This explosion-resistant Rotormill is for use on applications where the material ground has combustible properties. These units can be constructed in carbon or stainless steel. Interiors can be furnished with hardened material for extended life for grinding abrasive materials.
International Process Equipment Co., Pennsauken, NJ 800-414-4995 www.rotormill.com

Sanitary Rotary De-Lumping
The Model 15X15-SS low-profile rotary de-clumper reduces agglomerates and friable materials being discharged from process equipment, storage vessels, and shipping containers. Material entering the square inlet is reduced in size by dual rotors. On-size material exits through apertures in the bed screen ranging from 1⁄32 to 2½ in. in diameter. Both the rotor assembly and the bed screen can be removed rapidly for cleaning or replacement. At 11 in. high, the unit is designed to fit in restricted spaces.
Munson Machinery Company, Inc., Utica, NY 800-944-6644 www.munsonmachinery.com