Screw conveyors are bulk material transporting devices capable of handling a great variety of materials which have relatively good flow of material.

Screw conveyors are very adaptable to the volume control of materials from the bottom of bins, hoppers, etc. Another use is the blending of several ingredients to make a finished product or to make a pre- mix of some product. This involves blending of material.

Screw conveyor is also used in heating or cooling of material in transit. The conveyor trough is provided with the jacket through which cooling or heating medium is circulated to obtain the required degree of heat transfer.

With the use of screw conveyors materials that must be kept from contaminants may be satisfactorily handled.