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Sentinel: Siemens Gearless Mill Drives YouTube

Jan 19, 2016· The mills at Sentinel in Zambia are amongst the world’s biggest, with 2 off 40 ft SAG mills complete with 28 MW drives, and 2 off 28 foot-ball mills with 22

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Gearless Mill Drive (GMD) animation YouTube

Oct 15, 2012· A detailed animation showing the workings of a Gearless Mill Drive (GMD), created from a series of CAD files and in-situ photographs.

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Gearless mill drives library.e.abb

The poles of the gearless or synchronous motor (also called wrap-around motor or ring motor) are directly installed on the pole flange of the mill shell, turning the mill body into the rotor. The stator is then wrapped around the mill. The gearless motor is fed by a cycloconverter which has a rated output frequency of around 5 Hz for the GMD drive.

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gearless mill drive comparison alila.pl

Gearless mill drive comparison greenmountainpta. abb's gearless mill drive system is the most powerful mill drive system in the market to power semiautogenous . gearless mill drive optical systems mtsexam. get price and support online; abb solutions take copper mining to new heights.

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Gearless mill drives Grinding ABB

Our GMD eliminates all mechanical components of a conventional mill drive system, such as ring-gear, pinion, gearbox, coupling, motor shaft and motor bearings: By mounting the rotor poles directly onto the mill, the mill itself becomes the rotor of the gearless motor.

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Gearless Mill Drives Beneficiation Siemens Global

That is why the gearless drive of a grinding mill is one of the most crucial pieces of equipment in the concentrator and why it is subject to particularly high demands. Siemens has provided about 80 SIMINE Gearless mill drives to the mining industry since 1980. In these thirty-plus years, SIMINE Gearless mill drives have accumulated a combined

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Gearless Mill Drive Reliability ABB Ability™ for Mining

A Gearless Mill Drive (GMD) is a major investment for a plant, and a host of processes are dependent on its reliable performance. This makes its potential downtime one of the biggest risks any mining company faces. It’s also one that can be mitigated and controlled through data and insights.

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ABB’s new Gearless Mill Drive generation: Maintenance

The gearless mill drive (GMD) has been continuously developed since its introduction in 1969. The structural design, the electrical parts and of course motor monitoring and control have all experienced major developments that have enabled larger, more efficient operations and higher productivity.

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SIMINE Gearless mill drives

SIMINE Gearless mill drives outstanding reliability for your mine The gearless concept The gearless drive avoids any contact between the rotating mill and the static parts of the motor. This allows for contin-uous workflow without maintenance on the gears

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Gearless Mill Drive systems (GMDs) Services

Gearless Mill Drive systems (GMDs) Services. Displaying 1-22 of 22 results. Supplier Name Project Name Country Project Owner; ABB : Toquepala Copper-Molybdenum Mine : Peru: Southern Peru Copper Corporation Sucursal Del Peru : Siemens : Toromocho copper, molybdenum and silver mine : Peru: Minera Chinalco Perú S.A.

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Gearless Mill Drive Reliability ABB Ability™ for Mining

A Gearless Mill Drive (GMD) is a major investment for a plant, and a host of processes are dependent on its reliable performance. This makes its potential downtime one of the biggest risks any mining company faces. It’s also one that can be mitigated and controlled through data and insights.

More

ABB’s new Gearless Mill Drive generation: Maintenance

The gearless mill drive (GMD) has been continuously developed since its introduction in 1969. The structural design, the electrical parts and of course motor monitoring and control have all experienced major developments that have enabled larger, more efficient operations and higher productivity.

More

siemens/mining SIMINE Gearless Mill Drives

The sealing system of the SIMINE Gearless Mill Drives is a proven design incorporating extremely low mainte-nance with ingress protection that is rated at IP 55, and complemented by a purpose-built rain shield. The outdoor version of the SIMINE Gearless Mill Drives allows omitting the concentrator building, a considerable saving of invest-

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gearless mill drive comparison alila.pl

Gearless mill drive comparison greenmountainpta. abb's gearless mill drive system is the most powerful mill drive system in the market to power semiautogenous . gearless mill drive optical systems mtsexam. get price and support online; abb solutions take copper mining to new heights.

More

Preprint 13-050

Presently the gearless drive is more costly than the complete mechanical portion (mill rotating element and accessories supplied by the mill manufacturers) and hence the customer/consultant needs to have two parties to deal with from the start of any project. There is an interface between the mill vendor and the gearless motor supplier.

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Literature Review: Gearless Motor Failures A Mill

Sep 10, 2014· 1 Ring Motor and Mill Complexities. We have been fortunate to undertake detailed mechanical and structural design reviews and audits of all mill types from the five major mill vendors and of ring motors from both the gearless drive vendors. We have also been hired by mine owners to determine the causes of most of the major modern mill and

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gearless mill drives Archives International Mining

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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Cobre Panama starts up gearless mill drive systems

In all, two 28-megawatt gearless mill drive systems (GMDs) are in use at the mine's 40ft SAG mills, and four 16.5MW GMDs are employed in 26 football mills. "Gearless mill drives are the 'workhorses' for grinding operations, which are at the heart of any mine,"

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Gearless mill drive system in iron ore ­processing

ABB was recently contracted to supply gearless mill drive (GMD) systems for two 38 foot semiautogenous grinding (SAG) mills at the Serra Azul iron ore mine in Brazil. The Serra Azul mine unit, owned by MMX Mineração e ­Metálicos, an EBX Group company, is located in the iron quadrangle of Minas Gerais, next to Belo Horizonte the heart of

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Gearless Mill Drive systems (GMDs) Services

Gearless Mill Drive systems (GMDs) Services. Displaying 1-22 of 22 results. Supplier Name Project Name Country Project Owner; ABB : Toquepala Copper-Molybdenum Mine : Peru: Southern Peru Copper Corporation Sucursal Del Peru : Siemens : Toromocho copper, molybdenum and silver mine : Peru: Minera Chinalco Perú S.A.

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Gearless Mill Drives Beneficiation Bulgaria

That is why the gearless drive of a grinding mill is one of the most crucial pieces of equipment in the concentrator and why it is subject to particularly high demands. Siemens has provided about 80 SIMINE Gearless mill drives to the mining industry since 1980. In these thirty-plus years, SIMINE Gearless mill drives have accumulated a combined

More

GRINDING: ABB commissions six gearless mill drives at

Oct 29, 2019· Two 28 MW gearless mill drive systems (GMDS) are operating in the mine’s 12-metre SAG mills and four 16.5 MW GMDS are employed in 26 ball mills along with associated control systems. “Gearless mill drives are the ‘workhorses’ for grinding operations which are at the heart of any mine.

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Instability in gearless mill drive motors

Instability in gearless mill drive motors by Peter Warner, Anglo American Technical Division In 2006 Anglo Platinum ordered two 26-foot ball mills from FFE Minerals Vecor and two 17,5 MW gearless mill drives (GMDs) from ABB for the 600 kilo tonne per month concentrator for the Potgietersrust Platinum North expansion project.

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Updates on geared vs gearless drive solutions for grinding

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 to not having an efficient variable speed drive option (60 to 80% critical speed), which is required for process reasons.

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