How to Choose & Use Magnetic Separators - ERIEZ - #9

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5. SEPARATION EQUIPMENT - GRATE MAGNET DESIGNS Grate Magnets consist of one-inch diameter (25mm)magnetic tubes in a grid formation designed to allow feed material to cascade through the grate, effectively spreading magnetic protection through the cross sectioned area of a pipe, chute or hopper. CeramicMagnet models are effective in removing relatively largeferrous contamination such as nuts, bolts or staples.Rare Earth models will do a much better job on fineor weakly magnetic material such as rust or scale.There are a variety of grate magnet designsavailable for almost any application. The simplest of these incorporate a single layer for use in a hopper so raw materials must pass through the grates as material feeds from the hopper. Multiple row units improve separation effectiveness. Someapplications will utilize a single row of magnetsand incorporate them into a grate housingassembly of the user’s design. Eriez will alsofabricate housings that include one or multiple rows of magnetic grates, depending on the level of protection required for the application. Theseunits are common for vertical chutes of freeflowing materials.Eriez’ many grate-housing designs mayinclude a standard grate that is removed from the housing for manual cleaning. An Easy-to-Clean grate design provides for a push/pull operationto strip accumulated tramp metal from the grateswithout physically handling the magnet. Rota- Grates or rotating magnet designs are available for materials that bridge or do not flow well. Self- cleaning units are also available so that the cleaning process is completely automated. 6. SEPARATION EQUIPMENT - LIQUID LINE TRAP MAGNETS Magnetic Traps employ the same powerfultube magnet used in Eriez Grate assembliesbut are specifically designed for liquid product flows. The traps are available in a variety of designs but basically include an inlet port to match the existing pipeline, a magnetic element to collect the tramp metal 7