Methods of pneumatic conveyance
“dilute phase” and “dense phase” in the dilute phase, relatively high volumes of air moving at high speeds are used to transfer materials entrained in the air (or other gas) stream. In the dense phase, a low volume of air at high pressures is used to transfer nearly solid masses of materials. Dilute phase systems can be further divided into “ pull “systems that operate below atmospheric pressure, “ push “systems that operate above atmospheric pressure, and hybrid “ push-pull” systems, which are frequently used when materials need to be unloaded and then conveyed over a long distance.
Air Gravity conveyors
The air slide air-activated gravity conveyor is the ultimate of all pneumatic conveying system applications. Here is a system that uses the forces of gravity to do most of the work without any moving parts. Material is fluidized through a porous media with low-pressure air. Material flow is achieved by sloping the air slide to match the fluidized angle of repose of the powdered material.