The best handling solution, either pneumatic or mechanical, is chosen according to the handling requirements, the loads and the characteristics of the material to be handled, including its specific weight, granulometry, fluidity and hygroscopy.
Chain conveyors and screws are the most suitable mechanical handling devices for powders, conveyor belts are used to handle materials with different granulometries, while bucket elevators make it possible to move the product vertically.
Pneumatic handling is a process whereby bulk materials are transferred from multiple source points to multiple destinations, by using an inert gas flow, usually air, as a means of transport. In case of medium to long distances and complex or non-straight routes, pneumatic transport technology is more appropriate and convenient, as it provides more flexibility and no contamination of the material by the external environment.
Dilute phase pneumatic conveying can work on a continuous basis, using both vacuum and pressure. This technology makes it possible to handle powders and granular products at low cost in all industrial sectors. In case of fragile, abrasive or hygroscopic materials, or a of a mix of materials, dense phase pneumatic conveying is best suited to guarantee product integrity and energy efficiency.Dense phase technology works on a discontinuous basis and makes it possible to handle bulk materials at slow speeds.