Pneumatic conveying can be defined as the art of handling powdered or granular material into a pipeline by using the flow of air that passes through it. The management of a pressure difference at the ends of the pipeline lets to obtain an air flow that, if it reaches and maintains the right speed, manages to transport the product to the desired destination. Pressure and speed are therefore the main parameters that characterize the pneumatic transport, but many others must be considered.

The weight, the shape, the moisture, the permeability, the eventual free flowing or propensity to aggregate, are just some of the many elements to deal with a pneumatic transport. Since the early decades of the ‘900, when we began to use the pneumatic technology to convey bulk material, many efforts have been made to realize a mathematical model able to describe its dynamics, but despite everything, the variables involved are too many and pneumatic transport, although widely used in modern industrial technology, remains essentially an art. In order to define an efficient system, it is necessary to get into the hands of specialists of the sector, to whom have gained experience and a specific knowledge of the transport of the product to handle and manufacture powder and granules conveyor systems.
Above all, it is necessary to contact companies that have test facilities capable of concretely and preventively testing and measuring the reaction of the product, thus avoiding sizing errors and unpleasant surprises after the start-up of the system.