Tag Archives: mill discharge pumps

Metso Outotec ups the pumping ante with its MDM900

Metso Outotec has released its largest mill discharge pump to date, the MDM900, in a move that will see it compete for orders from the highest throughput processing operations in the world.

The MDM900 is the latest addition to Metso Outotec’s flagship Mill Discharge (MD) pump series, a pump designed for heavy-duty use in concentrator plants, where capacity and wear resistance are very important.

The MDM900 is an all-metal, thick-walled, extra heavy-duty pump designed specifically for extremely arduous mill duty applications. Its release comes less than a year after Metso Outotec officially launched the MDM800, which was then its largest metal pump model size.

Coming with an inlet size of 900 mm (36 in), the MDM900 is designed for flows up to 13,500 cu.m/h and heads up to 40 m. It is fitted with a FR2100 frame and has an impeller diameter of 2,100 mm.

Diwakar Aduri, Product Manager for MD Pumps at Metso Outotec, said: “Slurry handling is vital in maximising a minerals processing plant’s productivity and efficiency. The advanced design of the MDM900 enables minimised slurry velocities in the pumps, thus reducing the rate of wear significantly. This translates to increased uptime and productivity for our customers.

“We are also proud to have implemented many environmentally sustainable design initiatives in the MDM900 pump, which is part of our Planet Positive offering, as are all our MD Series pumps.”

Examples of these “environmentally sustainable” features include the reduced footprint of the MDM900 and its standard low-flow shaft seal to minimise the pump’s freshwater requirement during operation, Aduri added.

Metso Outotec MD Series pumps have been designed to match a mill’s uptime. They come in two tailored solutions, MDM and MDR. The MDM (Mill Discharge Metal) pumps are available in inlet size ranges of 250-900 mm, and the MDR (Mill Discharge Rubber) models come in inlet size ranges of 250-700 mm. Both pump types are suited for heavy-duty use in concentrator plants offering excellent resistance to abrasion and erosion, according to the company.

Metso Outotec slurry pumps to treat tails at SevGOK iron ore project

Engineering Dobersek in Germany and Severniy Mining and Processing (SevGOK) in Ukraine have selected Metso Outotec’s mill discharge pumps for Severniy’s greenfield process waste thickening plant, the OEM says.

Metso Outotec’s pumps will be used to pump the iron ore concentrate plant’s waste sludge into the settling ponds from the thickeners. The 22 pumps to be delivered by Metso Outotec include 10 large high-capacity MDM700 pumps. Together, the pumps are capable of handling a total volume of 117,500 cu.m/h of waste sludge.

“SevGOK’s complex is the second of its kind in Ukraine, and Engineering Dobersek in Germany has designed it,” Axel Stappen, Managing Director, Engineering Dobersek GmbH, says. “With this investment, SevGOK aims to decrease environmental impacts and costs by lowering energy consumption and water usage. They chose Metso Outotec pumps because of their reliability and efficiency, and the good support Metso Outotec has provided in their previous projects.”

Michael Nienhaus, Head of Sales, Slurry Pumps, Germany, Metso Outotec, says: “We are delighted to have been selected to supply our MD series pumps to SevGOK’s project. To give an idea of the size of an MDM700 pump, it can weigh as much as 31 t and be 2.8 m in diameter, and have an impressive pumping volume of up to 9,650 cu.m/h. The MDM pumps operate in very demanding conditions, and we’ve designed them to operate reliably and to withstand exceptional wear.”

Metso Outotec mill discharge pumps have been designed for mill circuit applications, such as SAG/ball mill discharge pumps and hydrocyclone feed. Special emphasis has been placed on components that have to withstand exceptional wear from coarse heavy solids and flow turbulence, the company says.

Metso Outotec expands range of mill discharge pumps for slurry handling

Metso Outotec has introduced a full line of mill discharge pumps for, it says, reliable and efficient slurry handling in minerals processing.

Metso Outotec’s MD (mill discharge) Series pumps come in two tailored solutions, MDM and MDR. The MDM (Mill Discharge Metal) pumps are available in inlet size ranges of 250-700 mm, and the MDR (Mill Discharge Rubber) models come in inlet size ranges of 250-700 mm. Both pump types are suited for heavy-duty use in concentrator plants offering excellent resistance to abrasion and erosion, according to the company.

Diwakar Aduri, Product Manager, MD Pumps at Metso Outotec, said: “Slurry handling is vital in maximising a minerals processing plant’s productivity and efficiency. Insufficient slurry handling may bring the whole plant to a halt or lead to inefficiencies in different parts of the process, causing major production losses.

“A large concentrator plant can have up to 150 different types of pumps in operation. Metso Outotec mill discharge pumps are robust and have been designed to operate reliably in highly abrasive environments, providing optimal solutions for each part of the process.”

Keeping the industry’s ever evolving needs in mind, Metso Outotec MD Series pumps offer outstanding uptime and sustained efficiencies, the company says, with the MD pumps designed for efficient operation and longest wear life to match the mill’s uptime.

Such matching is aided by Metso Outotec’s analysis service.

This service ensures customers can select a slurry pump for a mine that is the most robust and technologically advanced pump in terms of performance, wear resistance, uptime and total cost of ownership for that application. The company can provide a detailed summary report and guidance on how to minimise total cost of ownership.

Weir’s Warman MCR pump more than doubles wear life at Agnico’s LaRonde mine

The superiority of genuine Warman® pumps and parts has been proven in a trial comparing the performance of a Warman MCR® 250 pump with a Warman AH® pump fitted with non-genuine spare parts at Agnico Eagle Mines’ LaRonde gold mine in Quebec, Canada, Weir Minerals says.

The mine had been using two Warman AH 12/10 slurry pumps to manage its SAG mill discharge since operations commenced in 1988. While these pumps were the latest technology at the time, the very coarse slurry was causing the pumps to wear out after just 1,600 hours, according to Weir.

“When a replicator proposed a trial of non-OEM pump liners and parts instead of our genuine Warman parts, they promised to double the wear life of the existing pump components,” Mike Swintak, Regional Senior Product Manager for Weir Minerals, said. “Our engineers investigated the root cause of the wear life problems experienced and decided a Warman MCR pump would achieve much better results compared to the AH pump with non-OEM parts.”

Instead of doubling it, the other manufacturer’s liners and impellers decreased the pump’s wear life by 300 hours, wearing out after just 1,300 hours. In addition to requiring six rebuilds per year, the non-genuine parts interrupted production due to discovery of premature cracks in the liner, Weir said.

Meanwhile, the Warman MCR 250 pump achieved 3,000 hours of continuous operation, requiring only three rebuilds and lowered spare parts costs alone by 36%, or $70,000 per year.

Swintak said: “The fantastic results achieved at LaRonde weren’t just due to the superior wear resistance offered by the pump’s Ultrachrome A05 wear material and superior hydraulic design of the MCR pump. Our engineers worked closely with Agnico Eagle operators to remove problems throughout the circuit contributing to the low wear life being achieved, such as revising their pump box level control procedures and monitoring system to ensure a constant level of 50-75%.”