Handling systems - Import export

Grizzly screens are typically constructed by welding steel rails, rods, or bars into grids with a specific pattern. The selection of rails can vary in size, ranging from about 7.4 kg/m to approximately 225 kg/m. These rails generally run parallel to each other along the entire length of the screening surface. The spacing between the rails typically range from 5 to 200 mm. To facilitate the smooth flow of materials, the openings are often tapered, with the top being wider than the bottom. Heavy-duty grizzly bars are commonly cast from manganese steel and feature double tapers. These grizzly screens are designed to receive large lumps of ore from sources such as railroad wagons, tipper cars, and other bulk material handling systems that discharge materials from considerable heights. As a result, they are constructed to be exceptionally robust to withstand the impact and handling of heavy materials.