Case Studies

Pump Lasts Longer with Coating

Submersible pump lasted 10 times longer with spray on wear resistant coating.

Challenge

A uranium ore processing facility needed to pump raw material, in the form of slurry through its plant. The slurry, crushed uranium ore mixed with reactive chemicals, is both highly abrasive and corrosive, causing metal components in contact with the slurry to erode and wear extremely quickly. Figure 1 shows the interior of a centrifugal pump after only five days in contact with the slurry. This image demonstrates the corrosive nature of the slurry, as the vane of this particular impeller has been eroded to the point that it is no longer capable of effective pumping.

Solution

In consultation with Global Pumps, the pump was replaced – with exactly the same model. The difference was that the replacement had had its interior metal surfaces coated with an elastomeric compound designed to withstand corrosive and abrasive process fluids. In this instance, the both the impeller and the pump casing were coated with MetalLine 785 elastomeric coating as a protectant against the slurry.

Result

Surprisingly, after 10 weeks of service no failures had occurred and the pump was inspected during routine maintenance. Figure 2 shows the interior impeller surface at this point – after 10 weeks of continuous service. Compare the completely intact elastomer and impeller with Figure 1, an equivalent impeller that had been in direct contact with the slurry for only five days. It is obvious that the MetalLine elastomeric coating has made a significant difference to the durability of the pump’s interior components. In this case the pump with the coating had already lasted twelve times longer than the original uncoated pump. The images show the unquestionable benefits of MetalLine’s elastomeric coating, with no discernible wear on either the coating or the underlying integral metal of the pump. This pump was put back into service following the inspection for further duty.

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NOT SURE WHERE TO START

Guide To Selecting the Best Pump

If you need some guidance on how to select the right pump then you’re not alone! There’s such a wide range of pumps in Australia, from centrifugal pumps to hose pumps to diaphragm pumps. The options available to you can make it a difficult choice, so we’ve created this special guide to help step you through the process of selecting the ideal pump for your requirements.

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