The SIMINE Gearless mill drives pump system significantly enhances concentrator productivity by eliminating the reducer gear between motor and pump and all corresponding maintenance. In addition, the cyclone pumps with variable speed can adjust their energy consumption to the optimized flow of pulp, resulting in energy savings of up …
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The company selected ABB's 26 MW gearless mill drive system (GMD) for the mine's 40 ft SAG mill, as well as other drives, electrical infrastructure equipment and a long-term service agreement (LTSA). This is expected to reduce operating costs, improve process throughput and reliability while saving energy and keep equipment in top form.
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Minerals Industries, Inc. 240 Arch Street, P.O. Box 15312 York, Pennsylvania, USA 17405-7312 Phone: + 1 717 843 8671 Fax: +1 717 845 5154 E …
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has been selected to design and supply a 42 ft x 25 ft, (12.8m x 7.6m) 28 MW gearless SAG mill, plus two 26 ft x 42 ft, (7.9m x 12.8m) 15.6 MW ball mills and two VTM-1500-WB VERTIMILLS ® for Newmont Mining Corporation's Yanacocha Conga copper-gold project in Peru. The 42 ft diameter SAG mill is the world's largest and is the first of its kind.
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Gearless Warp Around SAG Mill. For almost a decade now, very good operating experiences have been gained with a total of 28 gearless ring motor drives in …
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For this expansion project, Kinross selected ABB to provide a 26 MW gearless mill drive system (GMD) for the mine's 40 ft SAG mill, as well as other drives, electrical …
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95% linear loads 30 % linear loads. 5% non-linear loads 70 % non-linear loads. f GMD with 20'000 kW driving a SAG mill. In today's grinding plants are installed 1 SAG mill and 2. to 3 ball mills with a total installed milling power of about. …
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Documents. Gearless Mill Drives (Marsh) of 65. Gearless Mill Drives Machinery Risk Solutions Practice 2009 Matt Dugalic P.Eng., MARSH – MRSP Risk Consultant, VP Kurt Tischler Dipl.-Ing., Siemens – Product Manager, Mining. 1 Marsh WHY shift to the gearless drives in mineral processing ???
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Most of our work since 2000 has been in developing grinding mill foundations to avoid vibration and unacceptable deflections. On a recent project for a plant in Peru, the client was told by the mill vendor that there was no need to do a systems (dynamic) analysis on the mill foundations because the mills on that project were gear …
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Grinding Process: Gearless Mill Drives. Siemens has provided almost 100 SIMINE Gearless mill drives to the mining industry since 1980. In these thirty-plus years, …
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DRA Global has installed over 120 mills, including a 23MW SAG Mill and an 18MW gearless drive mill, both world firsts. Read More. Mining. Specialist capabilities in the design of mines cater for a wide range of mining methods and commodities. Mining services extend from pit to port; from the inception of brownfields and greenfields projects to ...
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SAG Mill Components. Once the basic operating conditions have been defined for the mill designer then, and only then, can he begin taking into account shell …
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ABB's state-of-the-art gearless mill drives (GMD) and gearless conveyor drives (GCD) have already become differentiators when combined with advanced digital …
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Gearless mill drives GMDs offer ore producers unrivalled availability, efficiency and durability, while reducing operating expenditure and taking advantage of digitalization. ... 28 MW SAG mill and two 28 ft, 22 MW ball mills to the project in order to meet the challenge of higher-capacity production coupled with low ore grades. Learn more. GMD ...
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Inventory ID: 6C-GM01. UNUSED FL 36' x 17' (11m x 5m) SAG Mill with 13,500 kW (18355 HP) Wrap Around Drive
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Maximum availability and productivity. Go gearless to meet your business objetives by exceeding standard availability targets in your grinding operations. ABB's GMD is the most powerful mill drive system in the …
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The $1.2 billion expansion, which saw throughput rise from 60,000 t/d to 120,000 t/d, involved the addition of two new thyssenkrupp-made ball mills, with ABB providing the gearless mill drives (GMD) technology. This came on top of the 33 mills the miner already had up and running as part of the existing 60,000 t/d plant at the operation.
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Introduction. We have written on risk associated with large ring motors in gearless mill drives previously [1, 2, 3]. In [1], we observed that ABB and Polysius were far too confident in 2001 when they claimed that 42 and 44 ft diameter mills and ring motors posed only manageable risks and that a 44 ft mill and GMD design was ready and …
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critical. Skilled and experienced personnel for the Gearless Mill Drive can be a great benefit to your operation. For any intervention on the GMD during operations or mainte-nance, it's necessary to have a broad system knowledge base. In the event of a system failure, decisions must be made quickly and under stress. On the other hand, the
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Today a single grinding line with a Gearless SAG mill and appropriate ball mills can process over 100,000 mtpd. Benefits. Variable speed capability; Removal of limits of design power gear and pinion drives are practically limited to about 10,000 hp per pinion. at this time, there is no reasonable gear drive alternative for more than two pinions ...
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Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed …
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ABB's state-of-the-art gearless mill drives (GMD) and gearless conveyor drives (GCD) have already become differentiators when combined with advanced digital services. These two technologies have become an ideal and futureproof solution for our industrial customers. We delivered the world's first gearless mill drive to Lafarge Cement …
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95% linear loads 30 % linear loads. 5% non-linear loads 70 % non-linear loads. f GMD with 20'000 kW driving a SAG mill. In today's grinding plants are installed 1 SAG mill and 2. to …
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Posted by Matrix on 27th March 2012. Siemens has modernised a gearless grinding mill drive at Newcrest's Cadia Valley Operations, near Orange in New South Wales, Australia. This is the first time that a gearless grinding mill had been equipped with a Sinamics SL150 cycloconverter control. The modernisation concept developed by …
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Siemens' gearless drive technology of 99.46 to 99.71% - as confirmed by real operational data from the Antapaccay mine in Peru. It was the first plant worldwide to use gearless drives for both applications. KEYWORDS Gearless Mill Drives, Gearless Conveyor Drives, Availability, SAG Mill, Ball Mill, Overland Conveyor, Antapaccay 15
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Toromocho Copper Mine (Morococha - Perú) - 1x28MW 40' SAG Mill + 2x22MW 28' Ball Mill GMDs, the highest power density and most powerful GMD systems ever installed worldwide at high altitude (4600msal). Complete electrical engineering design and testing for this project (cycloconverter, transformers, E-Houses)
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The Collahuasi motor was for a 40 ft SAG mill. The Antamina 38 ft SAG mill was also driven by an ABB motor and the hanger plates had not failed on that machine after several years of operation. Similarly, the Sossego motor for the 38 ft SAG mill had not failed. It too had an ABB motor and it had operated longer than the Collahuasi motor.
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In June 1998, the world's largest grinding mill, the 40 ft (12.2 m) diameter 20 MW Cadia gearless SAG mill, was commissioned. This was a leap of over 40% above the largest operating SAG mill. A significant saving in capital cost gave the incentive necessary for a single mill line at Cadia, resulting in the selection of the 40 ft (12.2 m ...
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Outotec has recently been awarded a contract to deliver one of the largest grinding mills in the world. The contract includes the design and manufacture of a Ø 40' x 29' SAG mill. The mill will be driven by a Gearless Motor Drive (GMD) which at 28.0 MW is equal to the largest grinding mill power ever used in the mining industry.
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1986 32 9.75 1st Gearless SAG 8,200 11,000 1965 20 6.10 AG 370 500 1959 18 5.49 AG 450 600 2005 to 2010 AG/SAG MILL MILESTONES ... Figure 3 – AG/SAG mill Installed Power Sold in the last six 5 ...
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