Tag Archives: mine dewatering

NETZSCH readies NEMO cavity pump dewatering skid for MINExpo

NETZSCH Pumps North America is to showcase its line of mine dewatering pumps and pump skids at MINExpo 2021, in Las Vegas, with a booth highlight being the NEMO® Progressing Cavity Pump Dewatering Skid, which the company says is ideal for mines that require a small and compact movable unit to address their dewatering challenges.

The NEMO progressing cavity pump is, NETZSCH says, known for its continuous, pressure-stable, gentle and low-pulsation conveyance of almost any process fluid without being affected by fluctuations in pressure, viscosity or solids content.

Another option for mining applications is the TORNADO® T2 Rotary Lobe Pump, a self-priming, valveless pump that offers maximum operational performance, high reliability and durability, ease of maintenance and a low total life cycle cost, the company says.

“With a revolutionary design that has been recently reengineered to maximise uptime, the TORNADO T2 pump features metal lobes running inside a metal housing with an elastomer liner,” the company says.

NETZSCH pumps are available in a wide range of flow and pressure capabilities. Both pump types, as well as the dewatering skid tank, can be constructed from carbon steel, stainless steel, galvanised steel, and Halar/rubber-lined steel, depending on application needs.

MINExpo 2021 is due to run from September 13 to September 15 at the Las Vegas Convention Center.

Weir Minerals expands mobile dewatering offering with new Multiflo LF pump

Weir Minerals has launched its new mobile Multiflo® LF pump range featuring trailer and skid-mounted pumps specifically designed to handle liquids ranging from water, to sewage and sludge.

The launch follows successful installations across North and South America, South Africa, and Kazakhstan.

With the new range, Weir Minerals offers robust and high performing mobile dewatering pump packages suitable for sites with variable conditions, including applications where liquids may contain high percentages of solids to be transported or acidic conditions with low pH values, it said.

“Not only versatile and highly mobile, the Multiflo LF is engineered for efficiency with a proven, enclosed impeller design and leading-edge materials that dramatically reduce total cost of ownership,” Weir added.

The Multiflo LF pump is available in different configurations to meet the varied demands of dewatering applications around the world. It can be supplied with a portable trailer, or as skid-mounted packages with diesel engines (T3 & T4F rated engine emissions) or electric motor drive options.

“No matter the configuration, the Multiflo LF pump range provides a dependable pumping solution with flow rates ranging from 100 cu.m/h to 3,200 cu.m/h and discharge heads of 10 m to 210 m,” Weir said.

Ian Ross, Global Product Manager for Dewatering Solutions at Weir Minerals, said: “The new Multiflo LF range features a selection of dewatering pump package that, compared to similar pumps on the market, reduce total cost of ownership through lower energy requirements.”

The pump features a hydraulically superior enclosed impeller design and larger diameter pump shafts that allow the Multiflo LF to efficiently handle large solids while reducing operational and maintenance costs, according to the company.  This is achieved through the advanced, high efficiency pump-end that requires less energy to process fluids, operating under reduced power requirements, and, in turn, consuming less fuel or electricity.

The enclosed impeller is further supported by a stout bearing frame and large diameter shaft that is less prone to deflection during cavitation, Weir says.

“The Multiflo LF pump range is more forgiving than similar pumps on the market, and the design is proven to result in fewer seal failures and far fewer instances of shaft breakage in extreme conditions,” the company added.

Ross continued: “With this range, we deliver a complete dewatering pump package, with compressed delivery times, that can withstand almost anything, including misapplication due to improper pump selection. With the high-head Multiflo LF pumps, the double pump volute equalises internal pressure to eliminate radial thrust, which helps prevent both seals failure and shaft breakage.”

The Multiflo LF comes with heavy-duty wear-resistant materials of construction that include cast steel and cast CD4MCu stainless steel for enhanced abrasion and corrosion resistance, Weir says. Casting the pumps from steel creates a more robust pump and additionally promotes extended wear life with the possibility of weld repairing the casing should a problem develop, according to the company.

Ross concluded: “Weir Minerals prioritises partnering with our customers. We’re right there on site from the beginning, from specification to delivery, installation, commissioning, training, and maintenance. We know the Multiflo LF performs, and we take the time to make sure it’s performing to our customers’ requirements.”

Babylon adds to pump rental capacity with Trico agreement

Babylon Pump & Power Ltd says it will expand its rental fleet of pumps through an unconditional agreement for the acquisition of assets from Tilbrook Ryder Investments Company Pty Ltd (Trico).

The transaction, expected to complete on October 1, 2020, will be funded by a cash payment of A$750,000 ($537,817) from existing asset finance facilities and issuance of just over 7 million fully paid shares in line with Babylon’s placement capacity, it said.

“The assets are a valuable addition to Babylon’s existing rental fleet, providing quality pumping assets for immediate use that are traditionally long lead items from OEMs,” it said.

The rental and workshop assets include two Multiflo RF-420EXHV dewatering pumps, multiple other skid-based pump units, ancillary rental equipment to facilitate pumping projects and workshop ancillary equipment to support continued growth, Babylon added.

“Trico’s fleet provides immediate opportunities to increase rental revenue in Western Australia as well as providing assets which can be used in the Queensland rental market as rental activity progresses in Babylon’s Mackay based operating entity, Primepower Qld,” the company said.

The transaction will result in entities controlled by the founders of Trico becoming shareholders in Babylon and the consideration shares will be subject to a one-year voluntary escrow, Babylon explained.

Babylon Executive Chairman, Michael Shelby, said: “This is an exciting opportunity to purchase quality long lead assets at a discount to replacement value. We are confident the assets will be deployed immediately, and on attractive rentals that will deliver a rapid payback of their acquisition cost.

“I am equally excited to have the founders of Trico, Tony Ryder and Dave Tilbrook, as supportive shareholders of Babylon. Both founders have many years of experience in the pump rental and heavy equipment industry and have the ability to offer valuable support and industry insight to Babylon as a rapidly growing company in this sector.”

Integrated Pump Rental redeploys Sykes pump set to East Africa mine site

South Africa-based Integrated Pump Rental has recently responded to an urgent request for a dewatering pump at an East Africa mine suffering from major flooding following unseasonable high rainfall in the region.

“If not dealt with promptly, flooding in a mine environment will not only impede productivity but in some cases, lead to unsafe working conditions,” Managing Director of Integrated Pump Rental, Lee Vine, said. “All of this will result in consequential losses, which is why we understand the need to respond quickly to customer calls for dewatering solutions.”

In this recent example, a mine in an East African country reached out to the dewatering pump solution supplier after suffering the flooding and being quoted long lead times to get equipment to the site from its traditional suppliers.

Vine explained that one of the company’s diesel-driven Sykes pump sets had just completed its contract on a diamond mine in Lesotho and was en-route to the company’s facility in Johannesburg. This previous assignment saw the pump set delivered to site and commissioned just 24 hours after receiving the call from the customer.

“The unit only had 160 hours on it and we immediately did a full assessment of the pump, serviced it and tested it on our in-house test rig to ensure that it would provide the performance and reliability required for its new task,” he says.

“What is most significant is that within one week of receiving the call from the mine, we were able to get the pump set ready, across the border and installed on site dealing with the dewatering challenge,” Vine says.

The pump set comprises a Sykes XH150 high-head diesel driven pump capable of a flow rate of 100 l/s at a total dynamic head of 150 m in this application.

The skid-mounted solution will more than capably deal with the dewatering application at the mine, and the customer made the decision to purchase the unit as opposed to renting it, Integrated Pump Rental said.

Thompson expands rotary pump dewatering capabilities with 6RW

Thompson Pump and Manufacturing Company recently released a new diesel-powered dewatering pump that, it says, features high air handling and large water volume capabilities.

USA-based Thompson is a leading manufacturers of heavy-duty portable diesel-powered bypass and dewatering pumps,. The company debuted its 6 in (152 mm) rotary wellpoint 6RW-DIS-4LE2T-X pump  at this year’s CONEXPO-Con/AGG trade show in Las Vegas, held in March.

The Thompson Pump rotary wellpoint pumps are the ‘original’ rotary wellpoint pumps designed by co-founder, George Thompson, the company says.

“With unassisted priming and automatic re-priming, the 6RW pump features high air handling and large water volume capabilities – up to 1,400 gallons per minute (5,300 litres per minute) and heads up to 80 ft (24.4 m); operating speeds up to 2,000 rpm; and a low horsepower engine for better fuel efficiency – an EPA Final Tier 4 Isuzu engine (model: 4LE2T), with diesel oxidation catalyst after treatment,” the company said.

The 6RW pump, which adds to the 8RW and 12RW pumps in this family, is designed for wellpoint and sock dewatering applications, and can be used in place of a comparable 6 in vacuum or piston pump, making it a cost-effective dewatering option, according to the company. It is equipped with abrasion and corrosion resistant parts, polyurethane rotors, and stainless steel wear plates that can handle intense industrial and plant applications.

Chris Thompson, President of Thompson Pump and Manufacturing Company, said: “This 6 in version was created, in part, due to the high demand to expand the rotary pump family’s dewatering capabilities.”

Integrated Pump Rental prevents flooding at KwaZulu-Natal coal mine

South Africa-based Integrated Pump Rental has recently come to the rescue of a coal mine in KwaZulu-Natal, providing fit-for-purpose dewatering equipment to prevent flooding in the open pit.

The unexpected failure of one of the mine’s own pumps came at a bad time. The national COVID-19 lockdown meant it would be some time before pump repairs were possible. Some heavy downpours aggravated the situation, demanding there be no delay in pit dewatering, Integrated Pump Rental said.

The answer came in the form of a Sykes HH130 high-head diesel-driven pump. The rugged, 5 t unit was promptly delivered to site by truck, and transferred to an on-site trailer for easy mobility. The 6 in pump is capable of pumping at a head of over 140 m high at a flow of between 80-90 litres per second, according to the company.

Henru Strydom, Operations Manager at Integrated Pump Rental, said: “From our experience of the mining sector, we know that water in a coal mine is acidic. The complete pump-end we supplied was, therefore, of stainless steel construction to resist corrosion and ensure reliability and uptime.”

Lockdown regulations allowed those coal mines supplying to state power producer Eskom to continue operations during Alert Level 5, even as most business activity came to a standstill. Rainfall across much of the coal-producing province of Mpumalanga raised the risk of flooding and led to Integrated Pump Rental also delivering solutions to several customers there during the lockdown, it said.

Strydom emphasises that, in addition to maintaining their vital dewatering activities, mines gain other benefits from renting pumps. There is no large capital outlay, for instance, and running costs can be controlled.

“The renting option means that we handle the maintenance, so that mines can better control their costs,” he says. “We also ensure the pump’s optimal performance, so that mines don’t risk costly downtime.”

Atlas Copco tackles sludge with new WEDA submersible dewatering pump

Atlas Copco has developed a new addition to its WEDA submersible dewatering pump range specifically designed for thick, soft, wet mud, and other similar mixtures.

The WEDA S50 fits into the S family of WEDA sludge pumps, complementing the other units in the range, in terms of specifications, the company said.

“These pumps are ideally suited for construction dewatering, industrial or refining applications,” Atlas Copco said. The technical specifications of the new S50 model place it between the S30 and the S60 pumps, offering a maximum flow of 1,450 l/min while pumping sludge with a specific gravity of up to 1,400 kg/m3. The S50 has a rated output of 4.8 kW and a maximum solids handling size of 50 mm, which is the same as both the S30 and S60 models, according to Atlas Copco.

Hrishikesh Kulkarni, Product Manager, Atlas Copco Power and Flow division, said: “The WEDA S50 is an ideal pump for rental companies and general contractors where they don’t have to worry about what goes in the pump.

“Accordingly, these vortex designed pumps are ideal for abrasive media and handling solids up to 50 mm. The S50 fits neatly into the existing range of sludge pumps, making our S family portfolio complete with a range from 0.5-1-3-5 and 7.5 kW.”

The sludge portfolio covers a wide range of applications such as cement plants, industrial process water, sedimentation tanks, treatment plants, construction sites, etc, Atlas Copco said.

The WEDA S50 comes with the standard WEDA+ features, including rotation control, phase failure protection, thermal switches in each motor winding, and 16 Amp phase shifter plugs. All WEDA+ pumps are fitted with a 20 m cable, with the reinforced cable entries ensuring high resistance to water leakage.

Atlas Copco said: “S50 pumps are built with hardened high-chrome impellers and volute, which provides high wear resistance. The aluminium alloy construction also offers high corrosion resistance. All these features combine to ensure durability and reliability in harsh environments.”

Low weight materials have the extra benefit of making handling and transportation easy, according to the company, meaning the new S50 is an attractive option for rental use.

For extra protection, the casing rib design offers external cooling to the motor in case of dry running.

WEDA seal systems, meanwhile, have a unique modular design, thus allowing for flexibility and ease of maintenance. “Service technicians can change S50 seals at the job site with minimum impact on pump availability,” the company said. “The pump has an external oil inspection plug making it a simple maintenance task to perform quick inspections.”

The S50 base is designed for stability while the bottom side discharge allows the passage of solids up to 50 mm. It offers several options and sizes for connections, and flow direction is changeable from 90° to 180° on the discharge.

Weir Minerals Pumped Up by new dewatering game for miners

Weir Minerals says it has created a “fun and simple game” to educate its customers on the OEM’s dewatering capabilities.

Pumped Up! uses a variety of Weir Minerals dewatering equipment to move water around a fictional mine site, according to Ian Ross, Global Product Manager for Dewatering at Weir Minerals.

Each of the 10 levels present players with a different dewatering obstacle to overcome, from recycling, to flooding, to underground mines and long distance pump requirements. Levels increase in difficulty, and the number of points awarded is determined by how long each level takes to complete.

Products included as part of Weir Minerals’ dewatering solution in Pumped Up! include Warman®, Geho®, Floway®, and Multiflo® pumps as well as Isogate® and Delta® valves, and Linatex® hoses.

The game was released as part of Weir Minerals’ 2019 Take Control Of Your Water dewatering solutions campaign. Through articles, expert profiles, and case studies, the campaign demonstrates how Weir Minerals use its engineering and project management capabilities, together with a wide range of equipment, to deliver an optimised dewatering solution unique to every customer site, the company said.

Head to www.dewateringsolutions.weir to play the game.

Flowrox gets ‘Smart’ with new filter press

Flowrox has strengthened its solid/liquid separation offering by introducing its new Smart Filter Press™.

Since acquiring Swedish filtration technology company NovaTek AB last year, Flowrox has now launched three new filters onto the market.

The Smart Filter Press (SFP) has various new and innovative features and reaches up to 10 times higher capacity compared with conventional recessed filter presses of the same size, it says.

Matti Luoma, Commercial Product Manager of Flowrox, said: “Being truly automatic and designed for safety, our SFP represents the next generation of filter presses. Thanks to its unique smart features and several error detecting functions, this filter can reach over 98% availability without any operator involvement. Its sophisticated process cycle minimises the consumption of the utilities and spare parts.”

Typical applications for the Flowrox SFP include solid/liquid separation in flue gas desulphurisation and different process water recycling uses in metal finishing, electrochemical machining, concrete recycling, industrial effluent treatment and municipal sludge dewatering, the company said.

Part of Flowrox philosophy is to offer lifelong user support. “We want to ensure best possible performance of our filters by providing full support at delivery, installation, start-up, operation and maintenance; service through the entire life cycle.”

Integrated Pump Rental up for southern Africa pit dewatering challenge

As open-pit mines continue to get deeper with the maturing of operations, pit dewatering is becoming more vital, with ground water not only posing an operational challenge but also a potential safety hazard if not attended to appropriately.

In this scenario, it is not a case of one pump fits all dewatering application requirements and it is advisable to deal with a reputable pump supplier to ensure the most appropriate solution is selected, according to Integrated Pump Rental.

Lee Vine, Managing Director of the company, said each application requires a site-specific solution.

“There are numerous options available in terms of the actual pump and ancillary equipment, as well as the choice between rental and outright purchase,” he says. “The differentiator that our team offers is the ability to assess a given application and provide a pit dewatering solution with the correctly sized pump.”

There are several factors that can have an impact on the pump selection, and this includes available power sources; the volume of water to be pumped; and the condition of the dirty water, including size and type of particles in the water.

“What adds complexity to pit dewatering applications is that, in many cases, the need to dewater a pit can be urgent and customers are forced into making an incorrect pump selection or tying themselves into a contract that does not work in the longer term,” Vine says.

While the decision to hire or purchase is an important commercial one, so is the actual selection of the pump itself, he said.

“If the pump is not sized correctly for the dewatering application at hand, it will not perform as required. This, in turn, leads to further operational challenges including production losses and sometimes even the need to change the pump resulting in further costs.”

One of the most important factors to consider is the available energy source. If there is no access to power, options such as diesel-driven or pumps fitted with hydraulic power packs must be explored.

When selecting the pump, it is also important to understand the specifics of the water ingress conditions and whether this is a long-term issue or simply a short-term challenge. This scenario will dictate the pump size, its rated output and what ancillary equipment is required.

As an example, Vine points to a recent dewatering application on a mine in Lesotho where a constant flow of water into the mine’s pit area demanded that water be urgently and reliably pumped out.

Over time the pit depth had increased, and the groundwater level had been exacerbated by the winter snowfall in the highlands of the country. As a result, the total dynamic head for the duties of the installed dewatering pump installation changes and the mine required an urgent solution.

Initially a Sykes XH150 diesel driven pump was deployed, pumping at 120 l/s at 150 m head. Subsequent to this, a second Sykes pump was dispatched to site to ensure the level of water remained at an acceptable level.

With the two Sykes pumps on site, the mine was assured of enough pumping capacity, should the groundwater level increase.

The call from this mine came in and, within 24 hours, the first Sykes pump was installed on site, according to Vine.

“This is very significant, when one considers that the mine is situation some 500 km from the company’s front door and across the border into a neighbouring country.”

Integrated Pump Rental not only rents out Sykes diesel driven pump sets, the company is also responsible for the sale of these dewatering pumps across southern Africa. The robust units are designed for reliable performance, under even the harshest operating conditions, according to the company.