Dense phase conveyors.

DPV-B Series dense-phase conveyors are said to be ideal for moving large quantities of powdered, granular or pelletized friable and abrasive materials. Standard units are rated at 100-plus tons per hour and are said to provide high material-to-air ratios and extremely low line velocities, resulting in smaller line sizes, lower air consumption, reduced dust problems and lower capital investment and operating costs, according to the company. Abrasive wear and particle degradation are also said to be minimized. DPV-B conveyors feature vacuum loading with bottom discharge and fit where low headroom makes other types of conveyors impractical. Units can be used for bulk unloading, in-plant transfer, scaling and batching, and customized for almost any dense-phase conveying application. DPV Series conveyors use positive air pressure for both loading and conveying. A proprietary venturi assembly from the company creates the vacuum needed for loading. In vacuum mode, the conveyor fills its transfer vessel by drawing material from one or multiple supply sources, such as storage silos, bins, hopper-bottom railcars or trailers. Cycling between loading the transfer vessel and unloading it is automatic. (Cyclonaire)

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