... power, metallurgy, coal, grain industry, etc. Working PrincipleAs the screw rotates, material heaps up in front of the advancing flight ... the most cost-effective methods for transporting bulk materials. Screw conveyors are used in thousands of applications in almost every ... Cement, Food Waste, Wood Chips, Aggregates, Cereal Grains, Animal Feed, Boiler Ash, Meat and Bone meal, Municipal Solid Waste, and ...