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Verder Pumps South Africa (VPSA) has upgraded the thickener transfer pumps as part of a concentrator upgrade project for a precious-metal producer near Rustenburg.

The company supplied its VF125 pumps, which are able to pump slurry with 1,7 specific gravity and at a flow rate of 60m3/hr over a distance of 690m, with a height of 30m.

The VF125 thickener pumps resulted in cost savings and increased production capacity, according to VPSA consultant Daan Louw.

Process engineering company DRA (then Vhumbanani) was appointed as project engineer on the project and approached VPSA to assist in the design of six thickener transfer pumps.

According to Thys de Beer, DRA project engineer, the VPSA pumps are able to transfer slurry without the need for a second pump station – something that would come at a significant cost to the mine and would probably take more time to process.

There are currently 24 VF125 pumps operating at 37kWh at the platinum processing plant.

The design for these pumps included installing pulsation dampeners to help decrease the pressure build-up in the pipeline, according to Louw.

The build-up in the hoses is eliminated by using rubber Verderflex hoses that are designed to increase life expectancy and production performance.

The Verderflex hose pumps are designed to handle tough operating conditions; they are said to reduce downtime, decrease maintenance costs and provide simple, reliable operation in difficult pumping environments.

Robday Rustenburg provided the maintenance for the VF125 pumps to ensure efficient operation.

A pump solution for every application

Peristaltic hose pumps are very versatile however generally they are for heavy-duty applications such as abrasive slurry, high solid content or high suction lift requirements found in industrial, sewage and mining applications. Our VF range features the world’s largest ID hose pump for the most demanding applications.

Advantages of Verderflex Peristaltic pumps:
✔ Ideal solution for pumping liquids and dosing chemicals
✔ Verder’s peristaltic pumps can pump abrasive, highly corrosive, viscous, high density and shear sensitive products.
✔ Verderflex® peristaltic pumps are used in many industries including: water and wastewater, mining, food & beverage, chemical, pharmaceuticals, and the oil and gas industry.

With the absence of mechanical seals, the Verdermag® range eliminates the danger of abrasive wear from the drive shaft and seal faces and instead uses an o-ring sealing system. As the pump has no vulnerability to containing the media, it can provide reliable handling of hazardous fluids such as volatile, corrosive and toxic chemicals with no risk to employees, the environment or surrounding equipment. The range encompasses compact low flow/head pumps commonly used in OEM systems through to high flow, heavy duty pumps rated up to 200 bar. For compatibility with all types of chemicals the range is available with both metallic and non-metallic materials such as ETFE and a range of alloys. Custom pump specifications are available.

Advantages of Verdermag centrifugal pumps:
✔ Low flow OEM systems such as circulation of acids and solvents
✔ Transfer of industrial chemicals such as CIP, Acids, Solvents
✔ Thermal oil circulation between -100oC and +200oC
✔ Circulation in high pressure systems such as nanofiltration of industrial effluent, desalination and fast-loop systems.

Verderhus screw centrifugal pumps combine the best features of centrifugal and positive displacement pumps to define a new standard for low head, high flow pumping. Verderhus® pumps transfer your product gently and efficiently. The open impeller allows large solids to be easily pumped that reduces the risk of cavitation, which can cause serious damage to a pump and to the production process. A Verderhus pump will lower both energy use and ownership costs.

Advantages of Verderhus screw channel pumps:
✔ Clog free operation, reliability for your process
✔ Highly efficient, low energy consumption
✔ Solids pumping up to 13% of the flow volume
✔ Low-shear, gentle pumping action, results in less damage to the product
✔ Minimal wear, even with abrasive fluids, longest life time
Typical application areas for Verderhus screw channel pumps
✔ Thick sludge in wastewater treatment
✔ Macerated food waste
✔ Sewage waste
✔ Circulation of lime chemical
✔ Paper pulp
✔ Mining
✔ Production of biogas
✔ Power stations

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