SAG mill gearless drive stator that vibrated excessively during commissioning. Root cause analysis of stator vibration, modelling and development of nonlinear differential equations to simulate stator behaviour. Numerical analysis and remedial design. Paper presented at SAG 2001 Conference, Vancouver [6]. 12.
Siemens
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 the cement industry, driving tube mills with …
The gearless drive system of the 40ft SAG mill has a power rating of 24MW and the two 26ft ball mills have a power rating of 16.4MW each. Construction and infrastructure facilities at Peru's mine. The construction of Antapaccay mine created approximately 4,250 jobs. It is also expected to create approximately 1,400 permanent jobs.
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 …
The origins of the failure can be traced back to c. 1994 when PT Freeport Indonesia ordered its first gearless drive for their 34 ft SAG mill. The motor had to fit through a tunnel on the road to the site. This necessitated a change in the frame design from that used in older motors to allow clearance in the tunnel [8]. The next motor for ...
Summary. September 1, 2010 - ABB won an order from Newmont Mining Corporation to engineer three gearless mill drive (GMD) systems to be installed at the Yanacocha Minas Conga oxide copper gold project in Peru. Fluor Corporation in Santiago, Chile, will act as EPCM contractor for this important project; Corporation will be …
Another solution is to use the so-called "gearless drive." A cyclo-converter reduces the power frequency and a synchronous motor is either wrapped around shell or mounted on a trunnion extension. This …
The 38' SAG Mill at Freeport Indonesia has already proven discharge capacity at new feed rates of over 6,000 mtph. The largest mill line offered to date (2004) includes a 33,000 HP (24.6MW) SAG Mill and two 25,000 HP (18.6MW) Ball Mills for a total installed power of 83,000 HP/61.8MW. This list speaks for itself.
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 market to power semiautogenous …
Manuscript submitted circuit of a typical drive for a high-power SAG mill. The for review October 15, 2004 and released for publication December 29, 2006. synchronous machine has two three-phase windings, each of This work was supported in part by the Chilean Council for Research and Development (CONICYT) under FONDECYT Project 1070725 …
The Conga project is located approximately 560 miles (900 km) north of Lima, at an altitude of 13,400 ft (4,100 m) above sea level. It is situated near the Newmont Yanacocha gold mine, where installed what was then the world's largest single-stage SAG mill, a 32 x 32-ft (9.75 x 9.75-m) EGL mill, driven by a 16.5-MW ABB gearless motor ...
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 …
In future, the 36-foot SAG mill of the new production line will be operated with a 13.5-megawatt drive. A further gearless mill drive with 22 megawatt output will ensure equally efficient and reliable driving of a ball mill with an inner diameter of 28 foot. Gearless drive systems are distinguished by their high efficiency and their low ...
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 Siemens allowed for most of the …
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Rely on our proven track record of AG and SAG Mill superiority. Since the early 1980s, we have been designing and manufacturing Semi Autogenous Mill (SAG Mill) and Autogenous Mill (AG Mill) under the Fuller-Traylor …
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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. Due to well-established relationships with equipment suppliers and commercial laboratories worldwide, DRA Global's process engineering team and process designs are unrivalled in the industry and are known to add value to all ...
Bordi: "We are increasing the 'tools in the chest' by offering some alternatives – for example – if the circuit actually needs a 38 ft, 20 MW SAG mill, you now have the option of a 38 ft gear driven mill. At this size gearless drive is a viable option, but it is significantly more expensive and therefore can pose a challenge.
322-04-00-039. Solución de problemas Mecánicos/eléctricos. Identificación del equipo: Personal: Motor de accionamiento Mecánico, electricista, del Molino SAG de operador 36' x 22,5' Equipo (visual)
René Chacon, ABB, Switzerland, details how gearless mill drive … · · gearless mill drive system (GMD) for the mine's 40 ft SAG mill, as well as other …
René Chacon, ABB, Switzerland, details how gearless mill drive … · · gearless mill drive system (GMD) for the mine's 40 ft SAG mill, as well as other drives, electrical Catalogo Gearless Gearless Catalogue - Sassi€¦ · 2019/10 ALBERTO SASSI CATALOGO GEARLESS1 ATO SASSI GASS CATAOG Indice • Index Gearless …
The test and study work showed that a single line 42 ft SAG mill circuit gave the most favorable project economics in comparison to an equivalently powered single line 40 ft SAG mill circuit. ... With this innovative concept the gearless mill drive eliminates all critical mechanical components inherent within a conventional mill drive system ...
World's largest geared drive – 2x8500kW – Wushan, China (operating) Among the many reasons that geared drives on large SAG mills are not favoured, is due …
Siemens has provided almost 100 SIMINE Gearless mill drives to the mining industry since 1980. In these thirty-plus years, SIMINE Gearless mill drives have …
The "frozen charge" phenomena, in which the ore is packed after a mill's shut down period, is a remarkable concern for SAG mills because it can destroy the mill when it is restarted [53]. In this ...
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 …
• 28 MW GMD for a 40' SAG mill • 28 MW GMD for 42' SAG mill Whether it is size or an installation at the highest altitude (4600 m.a.s.l.), ABB's GMDs are well …
Summary. September 1, 2010 - ABB won an order from Newmont Mining Corporation to engineer three gearless mill drive (GMD) systems to be installed at the …
