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They are ideally suited to convey fine fluidizable powders over distances from 5m to a kilometer and throughputs of up to several hundred tonnes per hour.
Dense Phase Conveying systems are normally configured with a conveying vessel under a silo or feed system and connected to one or more destinations via a conveying pipeline.
How they work
Each destination must be suitably equipped to receive the material. A compressed air source is required to provide the conveying motive air, either from a blower or plant air.
The conveyor is filled via the top inlet valve, normally under gravity conditions. Once full, all valves are closed, and the conveyor is pressurised. When the kick-off pressure is reached, the discharge valve is opened, and the material transfer begins.
About dense phase conveying
This mode of conveying, “Dense Phase”, minimises the air usage required to move large quantities of powder by maintaining high conveying mass ratios. This means smaller pipelines can be utilised, and smaller pipes require less conveying air, and this has a direct impact on power costs. Dense Phase is the most efficient mode of pneumatic conveying.
Further efficiencies can be gained by use of a twin vessel continuous conveying system which always maintains a full conveying pipeline. This is ideal for longer conveying distances.
Dense phase also has the lowest conveying velocities of all pneumatic conveying systems, which is why it is the first choice when handling abrasive materials. The low velocities keep system wear to a minimum, and where applicable, keeps material attrition negligible.
Applications
From silos, bulk bags or mixers feeding into destination silos that often feed the downstream packaging lines.
Bulk materials
Common materials handled: cement, fly ash, bentonite, gypsum, lime, magnesium oxide, barites, carbon black, calcite, plaster, sand, soda ash, sugar, stearic acid, limestone, calcium carbonate, roasted coffee beans, pvc powder, flour, maize grits, rice, flocculants, and many others.
Features
Performance
Heavy-duty design
Versatility
Options
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