Slurry pumps cut costs of desilting

Livestock wastewater settling lagoons silt over time and using contractors to excavate the nutrient rich resource is costly. Australian Pump’s solution is to deploy heavy-duty slurry pumps to liquidise and remove the sediment.

They recommend Tsurumi’s KRS slurry pumps designed originally to desilt wastewater collection dams in mines and steel mills. The submersibles feature abrasive-resistant, high-chromium agitators which stir the silt so it can be pumped out without the need to drain the pit.

“Clearing sludge from settling lagoons without having to drain the pond is faster and more cost-effective,” Aussie Pumps’ product manager Neil Bennett said.

Tsurumi’s heavy-duty KRS slurry pumps handle both grit and corrosive conditions. The built-in agitator moves the silt from rest and passes it through the pump.

“This means a dam can be effectively desilted in a fraction of the time with major cost savings for producers,” he said.

Tsurumi’s KRS slurry pumps are powered by 4 pole 1450 RPM slow speed motors from 9.5 kilowatts to 34 kilowatts. Available in 80 millimetre to 200 millimetre bore diameters, the pumps can deliver flows up to 4000 litres per minute and heads to 31 metres.

The pump bodies are manufactured from high grade cast iron with a high-chromium impeller and agitator for wear-resistance. The pumps feature all of Tsurumi’s standard longevity attributes including a unique anti-wicking cable entry that prevents water incursion due to capillary wicking should the power cable be damaged or the end submerged. The cable entry is absolutely watertight.

The dual, double-silicon, carbide mechanical seal is completely enclosed in the oil chamber. The seal is therefore always protected, cooled and lubricated by oil thus eliminating spring-failure caused by corrosion or abrasion.

As if that wasn’t enough, Tsurumi added an oil lifter. The oil lifter is a patented guide vane inside the oil chamber that ensures the mechanical seal is lubricated even if the oil level falls or the pump is installed at an angle.

The top discharge design means that the liquid passes through the pump casing and cools the motor. This means the pump don’t have to be fully submerged or even installed vertically.

Tsurumi’s KRS series can link its heritage back to major projects of land reclamation carried out in Japan over the last 50 years,” Mr Bennett said.

“The pumps are built with Tsurumi’s fanatical approach to quality and shows their passion for products that won’t quit and is why they give a three year warranty”, he said.

Further information on the Tsurumi KRS series is available from Australian Pump Industries or Aussie Pump Distributors throughout Australia or

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