Pneumatic conveying systems are usually considered high energy consuming systems, but this does not have to be the case if the designer chooses the right equipment concept. There exists a basic rule to use a fluid conveying system for the horizontal conveying of powder materials as much as possible. The second rule is to use a pneumatic conveying system for vertical conveying, which provides a high degree of energy saving. RAYMAN spol. s r. o. (LTD) recently designed and built a modern pneumatic conveying system for a cement plant in Russia according to these principles. The system combines horizontal fluid conveying with Fluid Conveyors and continuous vertical conveying using a Flow Feeder. The conveyed materials are cement kiln dust and raw mill dust. The new system replaced an old, dusty and unreliable system of mechanical conveyors. Here, Petr Rayman describes its installation and how it compares with the old system.
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