MPI grate magnets are designed to remove medium and small-size ferrous tramp metal contaminants from dry, granular free-flowing product streams in gravity-fed vertical chutes, hoppers, housings or bins. Also referred to as hopper magnets, magnetic grids, grates in housing and magnetic grate separators, they are easy to install and clean. Magnetic grates offer efficient, economical magnetic protection of processing equipment, such as milling, extruding, and mixing, while improving product purity.
With these types of magnetic separators, the product stream flows through a row of 1” diameter magnetic tubes, located on 2” centers, allowing 1” of space between each tube. The tubes are held in place with a welded stainless-steel support frame. As tramp metal contaminants are captured, they move to the underside of the magnetic tubes, eliminating tramp metal “wash-off”. All tubes are fully welded for the highest durability, no crimped or mechanically sealed end plugs. All MPI grate magnets are proudly manufactured in the USA.
- Magnet manufacturing in the USA
- Manufactured in Highland, MI to the highest quality standards
- Industry Leading Delivery and Configurations
- Highly configurable grate magnets with multiple options and sizes available for quick delivery
- Built To Last
- Permanent rare earth neodymium or ceramic magnet material options
- All tube ends are fully welded for the highest durability and sanitary design, no crimped or rolled ends
- Heavy wall thickness tube is more resistant to dings and dents common with grate style magnet applications
- USDA Certified Available
- USDA approved certified sanitary (USDA AMS NSF / ANSI / 3-A14159-1 2002) available that certifies grate magnet to USDA standards for cleanability, corrosion resistance and durability
How Do Grate Magnets Work?
The MPI grate magnet is one of the most versatile magnetic separators for installation options. They can be compact and integrated into existing equipment such as hoppers, chutes, bag dump stations or bins. Regardless of the installation location for magnetic grate separators, the principle on how they work remain the same.
The product stream flows through typically a single row of 1” diameter magnetic tubes, located on 2” centers, allowing 1” of space between each tube. The tubes are held in place with a stainless steel support frame of varying designs as required by the application. As tramp metal contaminants are captured, they move to the underside of the magnetic tubes, eliminating tramp metal “wash-off.” Captured ferrous metal is held on the magnetic tube until it is removed from the product flow and manually cleaned off by hand or with an MPI hand cleaning tool.
Options such as a frame at the end of the tubes make the magnetic grids easier to clean, while options such as diverters, make it a more efficient magnetic separator, but more difficult to clean.
