Basically, Air Blaster systems use strategically positioned compressors along the bulk material Flow Path, which blast compressed air in the right direction to prevent material build-up due to the various shapes that form within the material. The compressed air is usually stored in an air receiver, which maintains the air pressure at 6 to 7 Kgf/sq. cm. This compressed air is fed to the point of discharge through a 100/ 150 mm opening through operation of pneumatically controlled valves. The instantaneous but controlled release of compressed air into the stored material is at a faster rate than the material can absorb. Therefore, the material gets dislodged and flows on. Further, the nozzle installation is done in such a way that the air discharge is parallel to the surface, so that the reaction is not transmitted to the structure and is not detrimental to the process. The actuation of the Air Blaster can be done either manually or through Electronic Sequential Timer.

Schematic Diagram (Animated) of Air Blaster Installation
in Cement Pre-Heater :

Air Blasters are also used in very large number in the following plants and industries: -