Weir Minerals Africa : Pumping innovation underpins GEHO success

The technical advancement of Weir Minerals’ GEHO® optimistic displacement pumps has ensured they play a key function in lowering mines’ environmental footprint.
The GEHO® pump range is well known in numerous pumping functions including tailings, backfill, ore transportation and dewatering. Weir Minerals Global Product Manager for GEHO® positive displacement (PD) pumps, Erik Vlot, highlights the pumps’ ability to pump highly viscous slurry, allowing mines to conserve water. The power efficiency of pipeline transportation also helps cut energy costs and reduces mines’ carbon footprint.
“The foundation of GEHO pumps’ success is our ongoing attention to technical innovation and enchancment,” says Vlot. “This additionally allowed us to be pioneers in the pumping of very acidic material at excessive temperatures, such as nickel slurry at greater than 200°C at a mine in Madagascar.”
With their excessive capacity, GEHO® pumps transport bauxite or iron ore over lots of of kilometres, providing one of the most cost effective and sustainable switch methods available to the mining business. These pumps have also 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 maneuver tailings from the plant, reaching the necessary beach slope on its tailings facility to meet its life-of-mine strategy.
Backfilling is a crucial technique 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 material – measuring 70% solids by weight – back into the mine’s labored out areas.
In เกจวัดแรงดัน1บาร์ of deep mines, GEHO® pumps present an environment friendly and reliable method of dewatering from great depths, instead of using multiple smaller pumps to switch water to floor. The powerful GEHO® pump vary can do this by pumping from the underside of a mine to the surface in just one carry – even over kilometres.
“Apart from the cost effectiveness of this solution, an necessary benefit is that it reduces the chance of 1 pump in a pumping chain failing, and disrupting the entire dewatering operate,” he says. “It additionally reduces the cost and upkeep necessities of having multiple pumping stations at different levels throughout the mine.”
The reputation of GEHO® pumps has also been built on their reliability, he explains. This has resulted from Weir Minerals’ ongoing research and growth into its pumps’ put on elements. This course of is based on an in-depth understanding of the entire pumping system during which the pump operates.
“Taking into consideration how our pumps work together with these systems, 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 guaranteeing that every one the shifting components transfer in oil and never slurry.
He emphasises the importance of diaphragm dynamics and the need to control the volume of propelling liquid in the chamber. This is completed by way of the PLC control, to guarantee that the diaphragm runs in the proper position.
“Rubber is nice at bending, but when it stretches it can tear,” he says. “Our aim is to increase the substitute intervals between diaphragm replacements, helping mines to scale back both their downtime and their total cost of ownership.”
The monitoring of GEHO® pumps’ operation is performed by way of digital know-how so 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 prospects, 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 possibilities for transferring coarse ore to the surface from deep in a mine – as a more value effective choice to traditional hoisting strategies.
“Vital to all our GEHO pump options is the Weir Minerals’ world service community, making certain that wherever our pumps are operating there shall be an experienced local service crew to assist them,” he concludes.
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