Weir Minerals Africa : Pumping innovation underpins GEHO success

The technical development of Weir Minerals’ GEHO® positive displacement pumps has ensured they play a key position in decreasing mines’ environmental footprint.
The GEHO® pump range is well-known in numerous pumping purposes including tailings, backfill, ore transportation and dewatering. Weir Minerals Global Product Manager for GEHO® optimistic displacement (PD) pumps, Erik Vlot, highlights the pumps’ capability to pump highly viscous slurry, allowing mines to preserve water. The energy efficiency of pipeline transportation additionally helps minimize power costs and reduces mines’ carbon footprint.
“The basis of GEHO pumps’ success is our ongoing consideration to technical innovation and improvement,” says Vlot. “This additionally allowed us to be pioneers in the pumping of very acidic materials at high temperatures, similar to nickel slurry at more than 200°C at a mine in Madagascar.”
With their high capacity, GEHO® pumps transport bauxite or iron ore over lots of of kilometres, providing one of the most price efficient and sustainable transfer methods out there to the mining business. These pumps have additionally performed an integral position within the success of a Weir Minerals paste answer at Finland’s largest open pit mine. Yara’s Siilinjärvi mine makes use of GEHO® pumps to move tailings from the plant, reaching the mandatory seashore slope on its tailings facility to satisfy its life-of-mine technique.
Backfilling is a vital methodology for mining to attain security and environmental objectives, and GEHO® pumps have been enabling this work. In a North American platinum operation, the tools pumps over a thousand litres a minute of this viscous backfill materials – measuring 70% solids by weight – again into the mine’s worked out areas.
In the context of deep mines, GEHO® pumps present an environment friendly and reliable method of dewatering from great depths, as a substitute of using a number of smaller pumps to transfer water to floor. The powerful GEHO® pump vary can do that by pumping from the bottom of a mine to the floor in just one lift – even over kilometres.
“Apart from the price effectiveness of this solution, an necessary advantage is that it reduces the chance of 1 pump in a pumping chain failing, and disrupting the complete dewatering perform,” he says. “It also reduces the price and upkeep necessities of having a number of pumping stations at completely different levels inside the mine.”
The reputation of GEHO® pumps has also been constructed on their reliability, he explains. This has resulted from Weir Minerals’ ongoing research and improvement into its pumps’ put on components. This course of is based on an in-depth understanding of the whole pumping system by which the pump operates.
“Taking into consideration how our pumps work together with these methods, we concentrate on key elements of the pumps such because the diaphragm and propelling liquid system,” he says. The propelling liquid supplies the barrier between the piston and the diaphragm ensuring that each one the transferring components move in oil and not slurry.
He emphasises the significance of diaphragm dynamics and the need to control the amount of propelling liquid within the chamber. This is done through the PLC control, to ensure that the diaphragm runs in the right position.
“Rubber is good at bending, but if it stretches it may possibly tear,” he says. “Our aim is to extend the substitute intervals between diaphragm replacements, serving to mines to cut back both their downtime and their total value of ownership.”
The monitoring of GEHO® pumps’ operation is conducted by way of digital know-how in order that operators can keep abreast – in actual time – of the pump’s efficiency and condition. Weir Minerals’ digital layer for these pumps is being rolled out to customers, informing the upkeep schedules and enhancing pump availability.
Vlot notes that Weir Minerals continues to innovate with the GEHO® pump vary, and is even exploring possibilities for transferring coarse ore to the floor from deep in a mine – as a more economical choice to conventional hoisting methods.
Bizarre to all our GEHO pump solutions is the Weir Minerals’ world service community, ensuring that wherever our pumps are working there will be an experienced local service crew to support them,” he concludes.
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