Weir Minerals Africa : Pumping innovation underpins GEHO success

The technical development of Weir Minerals’ GEHO® constructive displacement pumps has ensured they play a key position in decreasing mines’ environmental footprint.
The GEHO® pump vary is well-known in various 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’ capacity to pump highly viscous slurry, allowing mines to conserve water. The power effectivity of pipeline transportation also helps reduce energy prices and reduces mines’ carbon footprint.
“The basis of GEHO pumps’ success is our ongoing attention to technical innovation and enchancment,” says Vlot. “This also allowed us to be pioneers in the pumping of very acidic materials at high temperatures, corresponding 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, offering some of the value effective and sustainable switch strategies obtainable to the mining trade. These pumps have additionally performed 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 move tailings from the plant, reaching the required beach slope on its tailings facility to fulfill its life-of-mine technique.
Backfilling is a vital technique for mining to attain safety and environmental goals, 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 provide an environment friendly and reliable way of dewatering from nice depths, instead of utilizing multiple smaller pumps to switch water to surface. The highly effective GEHO® pump range can do that by pumping from the underside of a mine to the floor in just one raise – even over kilometres.
“Apart from the fee effectiveness of this resolution, an essential advantage is that it reduces the chance of one pump in a pumping chain failing, and disrupting the whole dewatering function,” he says. “It also reduces the cost and upkeep necessities of having multiple pumping stations at different levels within the mine.”
The popularity of GEHO® pumps has also been built on their reliability, he explains. This has resulted from Weir Minerals’ ongoing research and development into its pumps’ wear elements. This course of is based on an in-depth understanding of the entire pumping system during which the pump operates.
“Taking into account 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 offers the barrier between the piston and the diaphragm ensuring that every one the transferring elements move in oil and never slurry.
He emphasises the importance of diaphragm dynamics and the want to management the volume of propelling liquid within the chamber. เครื่องมือใช้วัดความดัน is completed by way of the PLC control, to make sure that the diaphragm runs in the proper position.
“Rubber is good at bending, but if it stretches it can tear,” he says. “Our aim is to increase the replacement intervals between diaphragm replacements, helping mines to scale back each their downtime and their whole value of ownership.”
The monitoring of GEHO® pumps’ operation is performed by way of digital technology so that operators can keep abreast – in real time – of the pump’s performance and situation. Weir Minerals’ digital layer for these pumps is being rolled out to customers, informing the maintenance schedules and enhancing pump availability.
Vlot notes that Weir Minerals continues to innovate with the GEHO® pump range, and is even exploring prospects for transferring coarse ore to the floor from deep in a mine – as a less expensive choice to conventional hoisting methods.
“Vital to all our GEHO pump solutions is the Weir Minerals’ global service community, making certain that wherever our pumps are operating there might be an skilled native service crew to help them,” he concludes.

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