Milling Journal - Q1 2008 - (Page 40)

Magnetic Separators Protecting milling equipment; ensuring product quality Loose tramp metal, no matter how small, can wreak havoc on roller mills, sifters, and other milling equipment—not to mention product quality. Here are some products for removing tramp metal. In the early 1940s, Orange F. Merwin, a semi-retired salesman in the grain milling industry, saw a need for plate magnets when many of his milling customers complained about fires and explosions due to unwanted tramp metal in grain. To solve millers’ problems, Merwin founded Eriez Magnetics, Erie, PA, and developed one of the first ALNICO plate magnets in 1942. Available Models Bill Dudenhoefer, manager of Eriez’ separation department, says the company offers many different magnetic separators for the flour milling industry. Two specific products are the Deep Reach and Rota Grate in Housing series of magnetic separators. Deep Reach. The Deep Reach units have two powerful magnets mounted vertically on each side of a stainless steel housing with a center diverter on top, Dudenhoefer says. A center diverter prevents product from flowing directly through the center of the housing, where the magnetic field is neutral. “If a contaminated product flows ver- PRODUCT roundup The Deep Reach model features two powerful magnets on both sides. tically through the housing, the Deep Reach magnets attract and hold the ferrous contaminant until an operator wipes the magnets clean,” Dudenhoefer says. The Deep Reach model protects milling equipment and other processing machinery that can be damaged by large tramp metal. Rota Grate in Housing. These magnets utilize powerful 1-inch-diameter magnets that are attached to a rotor. Dudenhoefer explains that the rotor spins slowly (like a paddle wheel) allowing fine powders with poor flow properties to pass through the unit. Normally, these fine powders bridge over the top of conventional flat-grate magnets. Rota Grate in Housing magnets are often used to remove very small, fine ferrous contaminants that the milling process can introduce to the product. The Rota Grate in Housing magnet is designed for materials with poor flow capabilities. Utilizing Eriez Magnets Dudenhoefer says millers utilize Eriez’s magnets to protect the milling equipment from damage that can result from metal being processed with incoming stocks. He adds that the magnets increase product purity by removing ferrous contamination. Dudenhoefer says millers can be confident when using Eriez products. “Our customer service is second to none,” Dudenhoefer says. “We have factory-trained representatives spread throughout the world to assist customers on a local basis.” In addition, Eriez owns manufacturing facilities around the world. Contact info. For more information, contact Dudenhoefer at 814-835-6385 or bdudenhoefer@eriez.com. 40 First Quarter 2008 MILLING JOURNAL http://www.iaom.info http://www.iaom.info

Table of Contents Feed for the Digital Edition of Milling Journal - Q1 2008

Milling Journal - First Quarter 2008 Contents First Break Examining Fortification Standards IAOM 2008 Milling Short Courses 2008 IAOM Conference and Expo Melinda Farris Interview Designing a Purifierless Millflow Dirk Maier Named KSU Dept. Head NAMA’s 2008 Division Meetings Protecting Electrical Workers Miller Profiles Todd Bastean Interview Safety: How Serious Are We? Product Quality/Gwirtz Product Roundup: Magnets Pest Management/Subramanyam Explosion Protection Supplier Interview: Darin Stutler Product Reviews New IAOM Safety Award Criteria Don’t Forget OSHA Form 300A Milling Notes Great Lakes Regional Conference 4th Quarter 2007 Flour Production IAOM Reference Guide Hammermills Brushes Aspirators Level Indicators Product Reviews Magnets Mixers Packaging Purifiers Safety Equipment Screeners Separators Sifter Accessories Ad Index

Milling Journal - Q1 2008

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