Six pie-shaped sectors (each subdivided into six aeration zones) and continuous blending in a timed discharge pattern provide the lowest energy gravity blending silo available. Power consumption on cement raw meal as low as 0.07 kWh / metric ton! New and retrofit installations with minimum downtime.
When an aeration zone is activated, layers are mixed through a funnel effect as material in the zone flows to its designated collection point on the gathering Airslide® conveyor. The inverted cone prevents material exiting without flowing through a collection point.
At FLSmidth we engineer all our blending silos to maximize the benefits of fluidization and gravity technologies over mechanical.
Technologies that give you operating efficiency, flexibility and increased productivity. Our product range can also combine storage and blending for space-saving plant layouts.
Central Inverted Cone - Air Assisted Gravity Blending. Multiple outlet gravity discharge combined with central cone construction gives advanced gravity blending and storage with a power consumption as low as 0.25 to 0.5 kWh / metric ton of cement raw meal.
Open Airslide® sections in the flat annulus ensure full clean-out when required.
Material enters the central bin via multiple Airslide® blending materials from different areas of the silo floor.
An arrangement of air valves activates sequential discharge and provides a continuous blending of materials from the side of the silo through a funnel effect.
Air blending is achieved by use of a porous membrane over the entire bin bottom, 4 air plenums and a simple flow control system enable. Together they change the density of material in the fluidized bed of material to generate a gentle folding action and a near perfect blend.
Airmerge™ Blenders can be designed for batch or continuous operation to meet your requirements.
Porous fabric held with binding strips on top of removable grating panels in the Air Plenum allows access for fabric to be replaced in place.
Higher air velocities in the blending quadrant lower the bulk density causing the denser material in the three fluidized quadrants to flow into it and be displaced upward in a continuously circulating bed.
Air for fluidization and blending can be supplied from common or separate blowers as required.
A fully fluidized cone, an upper and lower air plenum and an open-ended central column allow the principle of air blending to be applied to even the most difficult materials.
The fluidizing air enters the cone beneath the column, reducing the density of the material within which is displaced upward as the denser material from the annulus of the cone flows inward.
This "Fountain-Flow" gives a radial circulation capable of blending ultrafine powders, coarser sandy materials and products with a wide particle size distribution.