Square Magnetic Separator Grid Magnetic grids are extremely efficient at removing fine ferrous contamination from free flowing products such as powders, granules, liquids and emulsions. They are easily placed in hoppers, product intake points, chutes and at finished goods outlet points. Contaminations such as rust and fine ferrous dust from machinery wear are often too small to be detected by a Metal Detector but are easily removed by these highly efficient magnetic grids. Magnetic separators grids are used in wide range of industries, including food, recycling, gain and milling, plastics, chemicals manufacturing and so on. Grate magnets and tube magnet(magnetic filter bar) are the most economical way to capture fine ferrous tramp metal in medium product flows. More photos about the magnetic separator grid: