Pneumatic conveying is a method used to transport bulk materials through pipelines using air or gas. This system can move various materials, such as powders, granules, and pellets, by creating a flow of air that carries the materials along the pipeline. It is commonly used in industries like food processing, pharmaceuticals, and construction. The process can be either positive pressure or vacuum-based. In positive pressure systems, air pushes the materials through the pipeline, while in vacuum systems, air is drawn out, creating a suction effect. Pneumatic conveying is efficient, reduces dust emissions, and minimizes material handling.