Gearless Mill Drive Comparison

  • 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 millsdrives - MC-m

    Gearless mill drives. Discover. A gearless millsdrive system comprises: the synchronous ring motor, the three converter transformers, one excitation transformer and the harmonic filter banks, as well as the E-house containing the cycloconverter and control, the motor control centre, the programmable logic controller control system, the

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  • geared vs gearless drive solutions for grinding mills in

    geared vs gearless drive solutions for grinding mills in kuwait. 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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  • geared vs gearless drive solutions for grinding mills in

    geared vs gearless drive solutions for grinding mills in kuwait. 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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  • SIMINE MILL GD - Siemens

    SIMINE MILL GD – outstanding reliability at your hand The Gearless Concept The Gearless Drive avoids any contact between the rotating mill and the static parts of the motor. This enables a contin-uous workflow without maintenance on the gears or the pinions. What used to

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  • Gearless Mill Drives | Beneficiation | Siemens Global

    SIMINE Gearless mill drives A standard of reliability and efficiency for grinding From Norway to Zambia, from Mongolia to Chile – for over 30 years, mining operators all over the world have been counting on SIMINE Gearless mill drives. Their most important features include a small footprint and less weight than conventional drives.

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  • Siemens Delivers First Gearless Mill Drive System to

    Sep 13, 2006· Simine Mill GD provides a gearless drive with no mechanical parts between the motor and the mill. Stepless adjustment of the rotational speed aids optimum start-up and means that the system can be controlled in accordance with the varying demands of the material in the mill. This reduces wear, maintenance and energy consumption.

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  • geared vs gearless drive solutions for grinding mills in

    geared vs gearless drive solutions for grinding mills in kuwait. 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

    Get Price
  • geared vs gearless drive solutions for grinding mills

    gearless mill drive comparison – Grinding . Geared Vs Gearless Drive Solutions For Grinding Mills and Updates on geared vs gearless drive solutions for grinding mills. Updates on geared vs gearless drive solutions for grinding Among the many reasons that geared drives on large SAG mills are not favoured, is .. Beckum, W. R

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  • Global Gearless Mill Drive User Meeting in Peru - Mineral

    Nov 12, 2008· To date ABB has installed or won orders for over 80 gearless mill drive units in 21 countries on fi ve continents. GMD end users from 33 different mines or cement plants, coming from all fi ve continents, as well as major mill suppliers, accepted ABB's invitation and came to Peru.

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  • Insurability of Large Gearless Mill Drives (GMDs)

    Sep 28, 2014· 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 waiting for a purchaser [4].

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  • ABB: Gearless Mill Drive User Meeting in Las Vegas

    From 13.-16.10.2010 ABB held its fourth global Gearless Mill Drive (GMD) User Meeting. The conference hosted over 150 participants coming from all five continents and took place in Las Vegas/USA from 13.–16.10.2010 (Fig.).It was the sixth ABB GMD User Meeting, after three global and

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  • Gearless mill drive order - Cement Lime Gypsum

    Gearless mill drive order ABB has received an order for the first gearless mill drive (GMD) system ever to be installed in an Indian manufacturing plant. The order was placed at the end of October 2009, by the Indian cement manufacturer Lalitha Cement Ltd. (LCL), located in Hyderabad, the capital of the Indian state of Andhra Pradesh.

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  • How digitalized gearless drive technology results in

    Eleven 5MW gearless drives with synchronous motors running at low speeds (50-60rpm) drive three conveyors; two with four motors each and one with three. Two 20MW conveyors transport the ore from the open pit operation to the surface, overcoming an elevation change of around 1,300m, while the second conveyor feeds into a slightly smaller, 15MW

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  • gearless mill drive comparison - lalocandadipulcinella.fr

    gearless mill drive comparison echtscheidingen . GD gearless drive system with a power rating of 20.1 MW was used for the SAG mill and an 11.2 MW system was chosen for the ball mill. x Siemens is supplying three gearless Simine Mill GD mill drives together with the electrical equipment to Minera Lumina Copper Chile S.A.

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  • geared vs gearless drive solutions for grinding mills

    gearless mill drive comparison – Grinding . Geared Vs Gearless Drive Solutions For Grinding Mills and Updates on geared vs gearless drive solutions for grinding mills. Updates on geared vs gearless drive solutions for grinding Among the many reasons that geared drives on large SAG mills are not favoured, is .. Beckum, W. R

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  • Gearless Mill Drives Go Gearless - LITTLE GUJARAT

    Gearless Mill Drive Comparison. Gearless Mill Drive Comparison. Abb Gearless Mill Drives. Milling Equipment abb gearless mill drives - A class of machinery and equipment that can be used to meet the production requirements of coarse grinding fine grinding and super fine grinding in the field of industrial grinding.The finished product can be controlled freely from 0 to 3000 mesh.

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  • siemens.com/mining SIMINE Gearless Mill Drives

    The SIMINE Gearless Mill Drives rpms can be adapted to your operations at any time, and are infinitely variable and uncomplicated. Whether manually or fully automatic – rpms can be adjusted to the properties of the ore, resulting in significantly less wear to the mill lining.

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  • Gearless Drives - Siemens

    pace. In 1996, Freeport ordered the first gearless drive for a 38-foot SAG mill located at the company's Grasberg plant in Indonesia. This gearless drive pro-vides an astonishing 20,400 kW of power. In 1998, Siemens supplied the first gearless drive for a 40-foot SAG mill at the Cadia Hill Mine in Australia. While the details vary, there is a

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  • difference grinding gearless - ME Mining Machinery

    Geared vs gearless drive solutions for grinding mills gearless ball mill images grinding mill china preprint 13050 ceecthefuture gearless mill drives grinding abb abbs gearless mill drive system is the most powerful mill drive system in the market to power semiautogenous sag ball and autogenous ag mills. More Details . 90%.

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  • Gearless Mill Drive Reliability | ABB Ability

    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 gearless mill drive & digital services help increase

    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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  • 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 - 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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