Which pump is best for slurry?

How to Choose a Slurry Pump 101

What is a Slurry Pump?

There are many different types of pumps available, and most pumps are designed for a specific purpose or type of application. Pumps that are designed to transfer thin fluids are different from pumps that are designed for thick, solid-laden, abrasive, heavy materials. Due to the difference in pump design between different types of pumps, it is very important that the most appropriate pump be selected for your slurry application.

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Slurry pumps are designed for pumping thick materials that can consist of such things as slurries, sand, gravel, mud, crushed rock, muck, manure, and many other highly viscous materials. Typically, a slurry is a mixture of a given material such as crushed rock and water. A slurry pump has the ability to move difficult thick material from the material source, into and through the pump, and downstream to its final destination.

Slurry pumps are inherently rugged by the nature of what they do and are capable of pumping high viscous and high specific gravity solid-laden slurries without clogging. The non-clogging aspect of a slurry pump design is one of the most critical differentiating factors compared to other pump types. These pumps perform in some of the harshest environments a pump could be applied to and are used in many industries including dredging, oil & gas, mining, frac sand pumping, and many other industries.

The 5 MUSTS for Choosing the Best Slurry 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 do 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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