What is the best slurry pump?

Applying a Slurry Pump to Heavier Slurries

When pumping heavy slurries it is critical to maintain a constant flow through the pipeline, the flow of the material must flow at a specific rate given the type of slurry material that is being pumped.  The specific velocity of flow can be measured in feet per second.  The continued movement of the material through the pipeline assists with avoiding settling at the bottom portion of the piping. Applying the pump correctly requires pre-planning and determining what the critical flow rate must be given the heavy slurry material being pumped.

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The critical flow rate is also defined as a flow that involves turbulence, or is described as turbulent, not laminar.  In this regard, critical flow rate is relational to the specific velocity of the fluid that achieves a turbulent flow.  This turbulence of the fluid is important to avoid settling of the material in the pipeline.  Critical velocity changes due to the density and coefficient viscosity of the fluid.  Although determining critical velocity of a heavy slurry is beyond the scope of this article, it is important to note that the EDDY Pump is designed to produce a turbulent flow due to the unique design of the rotor.  Traditional pumps in slurry applications, such as centrifugal pumps, produce a laminar flow which is counterproductive and one reason they are not as well suited for heavy slurry applications as an EDDY Pump.

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1.) Slurry Pump Design

The design of a slurry pump is critical to making sure that the abrasive and often corrosive aspects of the slurry does not destroy the impeller. Additionally, slurry and sludge may contain large unforeseen solids that will inevitably clog many types of pumps. Since most centrifugal pumps have an impeller with a close tolerance to the volute, the abrasive and sometimes corrosive nature of the slurry will quickly wear the volute and ruin the tolerance. This, in turn, causes the pump to lose its suction capability. This causes massive downtime with slurry pumps along with costly maintenance and spare parts.

For this reason, the EDDY Pump is ideal for slurry pumping applications. The EDDY Pump does not have an impeller, but instead a rotor that does not have any critical tolerances. This allows it to pump slurry at rates of 30% and solids up to 12 inches. This is far more than what centrifugal pumps can handle without any failure or need to change wear parts.

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