The air slide — also called a fluidised conveyor or airslide conveyor — is a gravity-assisted conveying system for fine, fluidisable bulk materials. A porous membrane divides the conveying channel — low-pressure air is introduced below the membrane, fluidising the material above it, which then flows by gravity along the inclined channel to the destination. With no moving mechanical parts in the material stream, the air slide has extremely low maintenance requirements and low energy consumption.

Air slides are the preferred conveying method for fine cement, raw meal, fly ash, and similar fluidisable powders over short to medium distances where a gravity slope is available. They cannot convey uphill and require a minimum slope — typically 6–8° — to maintain material flow. For longer distances or changes in elevation, pneumatic conveying takes over where the air slide reaches its limit.

SaveEco engineers air slides as part of complete conveying system designs — particularly in cement plant raw material and finish mill circuits where long horizontal runs at slight decline make the air slide the most energy-efficient conveying option.

Key Applications: Cement plant raw mill circuits · Silo discharge · Finish mill to silo · Kiln feed distribution

Materials: Cement · Raw meal · Fly ash · Fine limestone · Fluidisable powders generally