In the mining industry’s drive to preserve energy, a focus on pumps is crucial, especially given the sheer scale of pumping tools required on the typical mine and mineral processing plant.
On this score, global minerals process specialist FLSmidth has allowed mines to realize new levels of efficiency with the initially patented put on ring technology on its KREBS pumps, based on Stephan Kruger, FLSmidth’s Vice President Pumps, Cyclones and Valves for Sub-Saharan Africa, Middle East and South Asia. Mines have seen significant effectivity features through the use of KREBS pumps, explains Kruger, leading to considerable bottom line impacts when multiplied by the handfuls and even lots of of pumps usually employed on a single mine web site.
“It is not only the rising price of electricity that drives mines’ energy strategies, but in addition their commitment to a low carbon future,” he says. “FLSmidth’s KREBS pumps immediately help these efforts by our mining prospects, thanks in nice half to our revolutionary put on ring know-how.”
He highlights that two key features that reduce efficiency in slurry pumps tend to be suction aspect recirculation and mechanical grinding between the casing and the impeller. The wear ring considerably reduces both of those components, leading to lower energy draw and longer pump life.
“Through our case research, we’ve seen energy draw being reduce by 5 to 10% for the same flow and head with the application of KREBS pumps,” he factors out. “Similarly, we have measured the influence on pump life, and have shown that the life of moist finish elements could be lengthened by one and a half to 2 times.”
According to Derek Lane, General Manager Operations, standard merchandise in the market remedy solely certainly one of these elements by way of impeller and liner adjustment which may reduce recirculation however concurrently exacerbates the grinding. “This leaves the pump person having to compromise on efficiency, which we don’t expect our prospects to do,” Lane explains.
He says adjusting the wear ring permits the speed of the pump to be maintained as a relentless, somewhat than customers having to speed up the pump in response to the influence of grinding and wear. The wear ring in KREBS pumps could be easily adjusted so that it continues drawing the identical energy for the required stress, holding vitality consumption to a minimum.
The common adjustment of KREBS pumps can additionally be carried out without shutting down the pump and disrupting operations, says Morne Potgieter, FLSmidth Sales Manager Pumps, Cyclones and Valves for Central and Southern Africa. ความหมายของเครื่องวัดความดัน is necessary as it contributes to the overall continuity – and hence effectivity – of the whole operation.
“The wear ring can be simply adjusted by hand whereas the pump is operating, and without the use of any special tools,” he notes. “This allows the gaps to be kept as small as attainable to keep away from recirculation contained in the pump, while maintaining velocity and strain.”
FLSmidth makes probably the most of this technological innovation via its skilled subject service teams and training offerings, which ensure that clients understand and apply the put on and tear ring adjustment to greatest effect. Potgieter says the coaching leaves on-mine operators extra comfortable with the duty of adjustment, even if a lot of them may be hesitant about working on rotating machinery.
“We additionally do extensive technical training with customers on features such as pump assemblies, and be positive that we are available when they want us,” he says.
The life of KREBS pumps is additional enhanced by the vary of materials of development obtainable to suit the applying, says Kruger. “The selection of fabric is predicated on the application requirements and particularly minimising wear. There are a number of factors thought of which determine the fabric of construction such as pump measurement, impeller size and tip pace as properly as slurry hardness.”.
Materials used in the construction of slurry pumps are categorised into two primary sorts: metals and elastomers. For metallic pumps high-chrome alloys, hypereutectic alloys, hypoeutectic alloys and stainless steels are generally used. Elastomers choices vary between natural rubber, polyurethane and synthetics corresponding to neoprene.
He emphasises that the applying of these materials makes their very own contribution to the mining sector’s sustainability agenda, by lowering the level of scrap produced as a outcome of gear replacement.
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