Weir Minerals Africa : Pumping innovation underpins GEHO success

The technical advancement of Weir Minerals’ GEHO® positive displacement pumps has ensured they play a key position in lowering mines’ environmental footprint.
The GEHO® pump range is well known in varied pumping purposes including tailings, backfill, ore transportation and dewatering. Weir Minerals Global Product Manager for GEHO® positive displacement (PD) pumps, Erik Vlot, highlights the pumps’ capability to pump highly viscous slurry, permitting mines to preserve water. The vitality effectivity of pipeline transportation additionally helps minimize power prices and reduces mines’ carbon footprint.
“The foundation of GEHO pumps’ success is our ongoing attention to technical innovation and improvement,” says Vlot. “This also allowed us to be pioneers within the pumping of very acidic materials at high temperatures, such as nickel slurry at more than 200°C at a mine in Madagascar.”

With their excessive capacity, GEHO® pumps transport bauxite or iron ore over hundreds of kilometres, providing one of the price effective and sustainable transfer strategies obtainable 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 uses GEHO® pumps to move tailings from the plant, achieving the required beach slope on its tailings facility to meet its life-of-mine strategy.
Backfilling is a crucial technique for mining to realize security and environmental targets, 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 – again into the mine’s labored out areas.
In the context of deep mines, GEHO® pumps present an efficient and dependable means of dewatering from great depths, instead of utilizing a quantity of smaller pumps to transfer water to floor. The highly effective GEHO® pump range can do this by pumping from the bottom of a mine to the floor in just one lift – even over kilometres.
“Apart from the fee effectiveness of this resolution, an essential advantage is that it reduces the danger of 1 pump in a pumping chain failing, and disrupting the entire dewatering function,” he says. “It also reduces the cost and upkeep requirements of having a quantity of pumping stations at totally different ranges throughout the mine.”

The reputation of GEHO® pumps has additionally been constructed on their reliability, he explains. This has resulted from Weir Minerals’ ongoing analysis and development 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 work together with these methods, we give consideration to 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 transferring elements move in oil and not slurry.
He emphasises the importance of diaphragm dynamics and the necessity to control the volume of propelling liquid within the chamber. This is done by way of the PLC management, to guarantee that the diaphragm runs in the best position.
“Rubber is good at bending, but if it stretches it could possibly tear,” he says. “Our purpose is to increase the replacement intervals between diaphragm replacements, helping mines to reduce back both their downtime and their complete value of ownership.”

เกจวัดแรงดัน monitoring of GEHO® pumps’ operation is conducted by way of digital know-how so that operators can keep abreast – in real time – of the pump’s efficiency and situation. diaphragm seal for these pumps is being rolled out to prospects, 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 less expensive choice to traditional hoisting strategies.
“Vital to all our GEHO pump options is the Weir Minerals’ world service community, guaranteeing that wherever our pumps are operating there shall be an experienced native service crew to help them,” he concludes.