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A Verderflex VF40 pump has been installed to pump abrasive mining slurry within the precipitation plant at the Xstrata Alloys Rhovan site in South Africa.

The Rhovan site extracts vanadium, a metal whose principle use is for strengthening steel.

The Verderflex VF40 has been employed to pump abrasive mining slurry – a medium with 60 per cent solid content – at 6-8m3 per hour.

While centrifugal pumps struggle to perform well with such slurries, the Verderflex peristaltic pumps are able to continuously pump these dense fluids.

The VF pumps regularly handle slurries with submicron content in excess of 80 per cent and with a specific gravity rating of more than 2.0.

Classified as a small, heavy-duty pump, the VF40 is designed to run dry without undue maintenance.

This is an important feature for Xstrata as no gland water is used in its operation.

The company also finds pump maintenance simple thanks to the rotor design and flange arrangement.

The speed with which the VF can be maintained has resulted in many other brands of hose pumps being substituted for Verderflex models on site.

Another contributor to the VF’s reliability is the absence of any wearing parts other than the hose, according to Verderflex.

Even this is designed and manufactured to minimise the effect of fatigue, resulting in a long hose service life.

According to Christelle van Vuuren of Xstrata, the Verderflex pump is only ever offline for scheduled maintenance.

Verderflex® peristaltic hose pumps and tube pumps are the ideal solution for pumping liquids and dosing chemicals. Ranging from smaller Original Equipment Manufacture (OEM) pumps to the world’s largest hose pumps used in very heavy industrial applications.

Verderflex® peristaltic hose and tube pumps are used in many industries including: water and wastewater, mining, food & beverage, chemical, pharmaceutical, printing and packaging.

Verder’s peristaltic tube and hose pumps can pump abrasive, highly corrosive, viscous, high density and shear sensitive products.

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