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Nov 14, 2013· ABB's supply scope included four dual-pinion low-speed mill drive systems for two SAG mills and two ball mills, each consisting of two synchronous motors, converter transformers and ACS6000 frequency converters. These include active rectifier units allowing the mill drives to achieve a power factor of 0.90 leading.

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Oct 05, 2010· It is situated near the Newmont Yanacocha gold mine, where installed what was then the world's largest single-stage SAG mill, a 32ft x 32ft (9.75m x 9.75m) EGL mill, driven by a 16.5MW ABB gearless motor, in 2008. That mill design was also the first of its kind and was customized for Newmont.

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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 MW drives. For mines of this size ...

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ABB's GMD is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills, This 'workhorse' for grinding operations combines a robust, service-friendly and fit for purpose design to provide highest throughput, reliability and availability for your processing plant.

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The Large Wrap Around Motor Foe Ball Mill. What Is A Wrap Around Motor - eweekend Acquired experience in motor maintenance on 18MW 38feet wrap- around/Gearless Mill motors for Sag and Ball mills, . the large wrap around motor for ball mill …

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An ABB Solution ABB ring-geared mill drive solu-tions offer a modular concept that pro-vides a common drive control platform for induction and synchronous motors in single- and dual-pinion configurations. These drives are well-suited for all type of mills and ball mill ap-plications, and are able to cover the power range up to

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Equipment operating in extreme environmental conditions. Large open-pit mining operations throughout the world use our control and drive systems to save energy, improve productivity, and enhance system value.

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ball mill — Cement mill Z12 productivity factor — ABB's scope of supply Gain more through better control — Cement mill Z12 stability before EO commissioning — Cement mill Z12 stability after EO commissioning — "The cement mill's productivity gain had a positive impact that reflected on a reduction of 1.15 kWh/t of energy ...

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From small process motors to giant ball and rod mill drive motors, we can offer repair and engineering services for AC, DC, Synchronous, and Wound Rotor designs. K&N Missoula has the unique ability to repair the motors and also rebuild much of the mechanical equipment on the driven end, such as pumps and fans.

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Jun 05, 2013· We provide optimized mill drive solutions for all types of ring-geared mills: low and high speed, single and dual pinion, with and without a gearbox — all designed for reliable, long life and ...

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Officials at power and automation technology group ABB have announced the successful commission of three gearless mill drive systems at Codelco's Mina Ministro Hales (MMH) in Chile; the state-run Codelco is the No. 1 copper miner in the world's most copper-prolific nation; ABB also provided engineering, installation, training and startup assistance.

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Mill Size: SAG Mill 38 feet/11,58 m Ball Mills 24 feet/7,32 m Ore processed: Copper/Zinc Drive Rating: SAG Mill 20,1 MW, 9,23 rpm Ball Mills 11,2 MW, 11,38 rpm Award of Contract: March 1999 Start of Operation: June 2001 ABB's scope of supply: Four complete Gearless Mill Drive Systems including: Wrap-around Motors Cycloconverters & Excitations

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ABB is a world leader in the application of power systems technology, motors and drive systems technology from the most complex applications such as large SAG and Ball mills and Drive Systems for HPGR's to less complex stand-alone drive solutions for …

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ABB's scope of supply consists of three complete GMD systems including transformers, ring motors and E-house. One 26 megawatt GMD system will be installed for a 40-foot diameter SAG mill, while two 20.5 megawatt GMD systems will be installed to drive two 27-foot diameter ball mills.

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Nov 08, 2016· ABB Motor Ring Geared Mill Drives. Starting a 6kV 3Ph - 2,200 kW - 1,000 rpm slip-ring motor for a cement ball mill - Duration: 3:51. Yves Mamin 500,700 views

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ABB manufactures motors and drive systems from sub-kilowatt to the megawatt ratings of gearless drives for the largest SAG and ball mill applications. ABB combines its extensive industry knowledge with its application expertise to select the most economical drive solution for your particular, often unique circumstances.

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ABB Motor Ring Geared Mill Drives YouTube. Nov 08, 2016· ABB Motor Ring Geared Mill Drives. Starting a 6kV 3Ph 2,200 kW 1,000 rpm slip-ring motor for a cement ball mill Duration: 3:51. Yves Mamin 381,474 views. Author: Indonesian Cement Knowledge Share; Grinders Cement ABB