A screw conveyor or auger conveyor is a mechanism that uses a rotating helical screw blade, called a flighting usually within a tube, to move granular materials. They are used in many bulk handling industries. Screw conveyors in modern industry are often used horizontally or at a slight incline as an efficient way to move semi-solid materials, including food waste, wood chips, aggregates, cereal grains, animal feed, boiler ash, meat and bone meal, municipal solid waste, and many others. Applications Bulk material handling Industrial equipment Agricultural machinery Grain production Chemical Industry