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บทความ เกจวัดแรงดัน

KSB – open pit dewatering in mining calls for sturdy, dependable and efficient pumps

Water is current in all places in mining and its management varies according to its role within the mining processes. In a current in-depth article by pumps main KSB, the company outlines how this in flip influences the number of applied sciences utilized in pumping water. “Alongside the secure supply and restoration of course of water is the challenge of eradicating ground water. Process water and groundwater comprise abrasive and corrosive components in various quantities which have an opposed have an effect on on pump efficiency and life. Working situations, remote locations, various temperature ranges and the lack of electric power are additionally highly influential factors.”
The copper mines in Chile and the iron ore mines in Western Australia may be many hundreds of miles aside, but these mining operations nonetheless require dewatering and the safe disposal of doubtless contaminated water. “The similar could be mentioned of the coal mines of Mozambique and the silver mines of Mexico. What all of them have in widespread is a requirement for environment friendly and efficient water and slurry pumps. Well-matched solutions assist to maximize the longevity and effectivity of the system and in addition optimise cost-performance ratios, all attributes fulfilled by KSB’s Hard Rock Mining Division.”
The changing face of mining
The search for more rare and treasured minerals and metals has opened up mining in nations and areas where previously the business was small scale or non-existent. Consequently, mining corporations and gear producers have had to develop new techniques and products. And with the major mining corporations having operations in many international places, changing into a preferred tools provider is important. “The dewatering market is slowly shifting from a pure CAPEX point of view to an increasingly OPEX perspective,” reports Brett Lewis, Mining Manager at KSB Australia. “This is especially true for the big mines that notice that poorly designed tools that frequently fails, causes a major improve in replacement and servicing value. Some mining firms are actually committing to a carbon neutral target in the next 20 to 30 years, so are focussing on excessive effectivity gear. They want to part out diesel reliance by connecting most bores to their local electrical grid.”
เกจวัดแรงดันราคา says it is aware that mining firms are recording pump performance and are accumulating knowledge to match brands and higher rank their qualities or deficiencies. “This is sweet information for KSB as the company is committed to delivering high reliability and effectivity pumps, so serving to to scale back the carbon footprint of mining dewatering operations.
Is there a ‘one-fits-all’ pump solution?
KSB says the answer to this is a resounding ‘no’, but “by sharing experiences between workplaces and likewise regularly working with the identical worldwide mining corporations, KSB has been capable of develop acceptable options. KSB’s involvement in the iron ore industries in Brazil and Australia reveal two different approaches to dewatering, both employing vertical multi-stage pumps.”
In Brazil’s Minas Gerais State open pit iron ore mines extreme floor water, monsoons and underground lakes are problems. To preserve steady production water needs to be pumped to a dewatering lake which has a dynamic water stage that must be raised two or three times a 12 months. KSB Brazil’s solution is a floating station fitted with KSB vertical turbine B pumps positioned over a pontoon (Fig.1). The pontoon rises and falls with changes in the water degree so there isn’t a want for the pumps to be repositioned. This results in cost-savings to the client. After 20 profitable years it has turn out to be the standard for this kind of gear in South America.
“The floating station supporting the pumps over the pontoon delivers the circulate fee requested by the client,” explains Jardel Ribeiro, Sales Manager, KSB Brazil. “Sometimes the pumps, high energy motors and related tools leads to the size of the floating station being elevated. Stabilizing equipment that weighs greater than 200 t requires a lot of planning, along with the problem of constructing a system in such a distant area.”
Boreholes in Australia
In the Pilbara Region of Western Australia iron ore is mined in several places across the Chichester hub zone, an area between 5 and 9 km extensive and 80 km lengthy. The mineral deposit sits between 90 m and 117 m below the surface. With the groundwater and water desk frequently replenished in wet seasons and cyclones including to the inundation, greater than 75% of the iron ore is beneath the water desk. If an excessive amount of water mixes with iron ore, it becomes low grade and unsuitable for export, which results in massive revenue losses. Also, surface dewatering processes are extremely expensive if the water may be very excessive.
The accepted dewatering process throughout the area is to pump the water out by way of boreholes. However, this is not with out its challenges. High water temperatures and high salinity end in excessive corrosion, while iron micro organism can develop on motors which prevent efficient motor cooling. The presence of gas is a constant risk in some areas as this causes fuel lock on the impellers leading to heavy vibrations, which locations a fantastic pressure on the motor, lack of move fee and motor failure.
This implies that normal off-the-shelf products aren’t at all times appropriate and the incidence of failures is high. Typically, most bore pumps fail within 12 months, and generally only some weeks. At its Hope Valley facility in Western Australia, KSB supplies mine operators with its UPA multistage borehole pump, customised to resist website conditions. Although a dearer product than its competitors, the UPA has been proven to ship a considerably longer working life and decreased costs of possession. KSB’s proprietary know-how that inhibits the expansion of iron bacteria makes the UPA a winner.
Trailer mounted models
In Africa the surroundings and minerals being mined require revolutionary approaches to dewatering. In the Katanga Province of the Democratic Republic of Congo, house to several open reduce and underground copper mines rainy seasons wreak flooding havoc. Here, KSB is delivering several different pumping solutions involving both UPA Z borehole pumps and surface-mounted Omega pumps. “To stop mining operations from being shut down, a quick localised response is required,” says Rob Bond, Area Manager Mining-Sub-Saharan Africa. “Our resolution has been to supply Omega pumps mounted on tough terrain trailers. We provide an entire bundle made up of the pump, engine/motor, couplings, gearbox, hydraulic drives and auxiliary equipment including vacuum pump, control panels, screens and so on that delivers excessive head pumping.”
A comparable resolution can additionally be offered for the open forged Moatize coal mine in Mozambique where the water ranges must stay low for steady manufacturing reliability. Whilst borehole pumps provide good reliability on a continuing foundation, when the wet season starts, extra resources are in demand KSB SA offers skid-mounted Omega items. To date, KSB SA has provided 152 items and all are working reliably.
Latin America
In Mexico’s Zacatecas silver mines underground water is a constant downside. According to Roberto Valenzuela, Sales Manager Mining KSB Mexico, the water incorporates solid particles so the high stress encapsulated UPA borehole pumps ought to be wear-resistant for long term efficiency. Because the dewatering pumps work at a excessive velocity, the impellers and the wear ring can undergo from premature put on. Using Multitec horizontal multistage pumps with KSB’s C6 commonplace chrome coating, wear is tremendously minimised. “We have had pumps operating on this mine for over two years with out the impellers being changed,” says Roberto Valenzuela. “It is an answer that no competitor presents, and provides worth for the shopper by way of lowered maintenance, spare elements and higher mining uptime.”
In Chile’s Atacama Desert copper and gold is mined at altitudes ranging between 2,000 m and four,500 m. Remote websites, mine depths and the unavailability of electricity wanted to drive excessive capability pumps complicate dewatering. High volumes of water contaminated by minerals can delay drilling and blasting and result in environmental pollution. KSB Chile has met these challenges by supplying encapsulated borehole pumps and cantilevered Etanorm pumps, driven by diesel motors.
“Our customers require high-pressure pumps in a modular configuration that can be moved with the enlargement of the open pit,” feedback Patricio Araya, Mining Head KSB Chile. “The answer is to make use of horizontally positioned borehole pumps with a special configuration for sand filters encased in a pressure shroud. This provides the client flexibility and versatility because the gear is compact, develops excessive pressures and is simple to move around the website.
To accommodate rising flows and discharge stress pumps are configured in collection and in parallel specifically for the client’s requirements. Being coupled to diesel engines permits steady, autonomous operation in places with out electrical energy for between 12 and 24 hours without refuelling. Vertical Etanorm pumps and cantilever-type UPA pumps put in on a raft enabling them to handle the buildup of water inside the mine, eliminating elements corresponding to negative suction head at excessive altitudes. KSB equipment for mine drainage is provided in standard variations, with variations for rafts or properly pumps installed in strain jackets. Having viable solutions for dewatering provides value to the purchasers operations and can be necessary because annually minerals are discovered at deeper ranges.
Innovation in Indonesia
Indonesia is probably one of the world’s largest exporters of thermal coal, and likewise a serious player in copper, gold, tin, bauxite, and nickel. Here KSB pumps are acknowledged for his or her excellent capacity to carry out in severe open pit mine sites. Its development of dewatering and dredge pump sets (DnD), as an answer for mining functions, particularly for open-pit mine sites is one instance of KSB’ commitment to continuous product enchancment and improvement. To date, more than 260 DnD pumps with GWI® LCC and LSA pumps have been put in in mines across Indonesia and South East Asia. In 2013, KSB Indonesia launched a model new mannequin, the DnD Cruiser with enhancements requested by prospects.
KSB builds the entire diesel pushed pump unit on a barge, full with gas tank, vacuum pump, control panel and so on, and ships them on trailers for easy commissioning at website. Because monsoon rains are seasonal dewatering can also be a seasonal activity and this implies pumps can stand idle for a quantity of months in the course of the dry intervals. Recognising this situation, KSB has introduced a rental programme, whereby the pumps are supplied fully-kitted out according to the customer’s necessities. By not having to buy the pump units, prospects are relieved of the prices of possession and know that after they require models they arrive ready for operation.
Summary
KSB’s mine dewatering techniques allow the safe and environment friendly lowering of groundwater in open pit dewatering, underground drainage and borehole drainage applications. Regardless of a mine’s location, the type of mining operation being carried out, the geological and the aggressive and corrosive nature of the water, KSB has fluid dealing with applied sciences that will match all eventualities. This situation has come about through the cross-fertilisation of concepts, technologies and experiences gained over many decades by our companies all over the world, supported by intensive investment in analysis and growth. Wherever a pumping resolution is required, we are able to bring a co-ordinated response to the table.
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