Weir Minerals Africa : Pumping innovation underpins GEHO success

The technical development of Weir Minerals’ GEHO® constructive displacement pumps has ensured they play a key function in decreasing mines’ environmental footprint.
The GEHO® pump vary is well known in varied pumping purposes including tailings, backfill, ore transportation and dewatering. Weir Minerals Global Product Manager for GEHO® constructive displacement (PD) pumps, Erik Vlot, highlights the pumps’ capability to pump extremely viscous slurry, allowing mines to preserve water. The power efficiency of pipeline transportation also helps cut vitality costs and reduces mines’ carbon footprint.
“The basis of GEHO pumps’ success is our ongoing consideration to technical innovation and enchancment,” says Vlot. “This additionally allowed us to be pioneers within the pumping of very acidic materials at excessive temperatures, similar to nickel slurry at greater than 200°C at a mine in Madagascar.”
With their high capacity, GEHO® pumps transport bauxite or iron ore over tons of of kilometres, providing one of the value effective and sustainable switch strategies out there to the mining industry. These pumps have also played an integral function in the success of a Weir Minerals paste resolution at Finland’s largest open pit mine. Yara’s Siilinjärvi mine makes use of GEHO® pumps to maneuver tailings from the plant, attaining the mandatory beach slope on its tailings facility to satisfy its life-of-mine strategy.
Backfilling is a crucial methodology for mining to attain security and environmental goals, and GEHO® pumps have been enabling this work. In a North American platinum operation, the gear pumps over a thousand litres a minute of this viscous backfill material – measuring 70% solids by weight – back into the mine’s worked out areas.
In the context of deep mines, GEHO® pumps provide an efficient and dependable method of dewatering from great depths, as a substitute of using a number of smaller pumps to switch water to surface. The powerful GEHO® pump range can do this by pumping from the bottom of a mine to the floor in only one carry – even over kilometres.
“Apart from the cost effectiveness of this solution, an essential advantage is that it reduces the risk of one pump in a pumping chain failing, and disrupting the whole dewatering perform,” he says. “It also reduces the price and upkeep requirements of having a quantity of pumping stations at different ranges inside the mine.”
The status of GEHO® pumps has additionally been built on their reliability, he explains. This has resulted from Weir Minerals’ ongoing research and improvement into its pumps’ wear components. This course of is predicated on an in-depth understanding of the entire pumping system during which the pump operates.
“Taking into consideration how our pumps interact with these techniques, we focus on key features of the pumps such as the diaphragm and propelling liquid system,” he says. The propelling liquid provides the barrier between the piston and the diaphragm ensuring that every one the shifting parts transfer in oil and not slurry.
He emphasises the importance of diaphragm dynamics and the need to control the quantity of propelling liquid in the chamber. This is done through the PLC management, to guarantee that the diaphragm runs in the right place.
“Rubber is good at bending, but when it stretches it could possibly tear,” he says. “ เพรสเชอร์เกจnuovafima is to extend the substitute intervals between diaphragm replacements, serving to mines to minimize back each their downtime and their total value of ownership.”
The monitoring of GEHO® pumps’ operation is performed through digital technology so that operators can stay abreast – in real time – of the pump’s efficiency and condition. Weir Minerals’ digital layer for these pumps is being rolled out to clients, informing the upkeep schedules and enhancing pump availability.
Vlot notes that Weir Minerals continues to innovate with the GEHO® pump range, and is even exploring potentialities for transferring coarse ore to the surface from deep in a mine – as a more economical choice to traditional hoisting strategies.
“Vital to all our GEHO pump solutions is the Weir Minerals’ world service community, ensuring that wherever our pumps are operating there will be an skilled native service crew to assist them,” he concludes.

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