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Erlangen, Sep 13, 2006 - For the first time ever a Brazilian mine is set to receive a Siemens gearless mill drive system. The Siemens Industrial Solutions and Services Group (I&S) will equip the ...
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ABB's delivery included one gearless mill drive system (GMD) for a 40-feet semi-autogenous mill and two low-speed dual pinion ring-geared mill drive systems (RMDs) for two 26-feet ball mills ...
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Gearless mill drives (GMDs) are the grinding solution of choice in challenging environments. By eliminating bolt-on mechanical components such as ring-gears, pinions, couplings and gearboxes, GMDs offer ore producers unrivalled …
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The Gearless Mill Drive system consists of the ring motor with its feeding cyclconverter, pre-installed in an E-house. It also includes the excitation rectifier, the automation system (for mill and motor) including HMI, monitoring and diagnostic system, MCC's (for mill and drive auxiliaries), differential
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Muchos ejemplos de oraciones traducidas contienen "gearless mill drive system" – Diccionario español-inglés y buscador de traducciones en español.
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Gearless mill drive system - Page 1 of 1 Andina contract awarded to ABB ABB has won a three-year service agreement from Codelco to maintain and optimise the installed gearless...
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a given issue for a gearless drive system. A harmonic study determines on a case-by-case basis whether the plant configuration and network in question need harmonic filtering. As the drive concept is a 12-pulse system, only the 11th and the 12th harmonics and their related sidebands have to be looked at. Harmonics with higher harmonic
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The gearless drive system includes four low-speed synchronous motors (4.4 MW, 66 rpm) and the associated SINAMICS SL150 converters. The operators profit from high availability and less downtimes as well as from reduced operational and …
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GMD technology for Minera ndida. ABB gearless mill drive, installed 2002 at the Minera ndida in Chile. ABB announced that it will supply a new 15.7 MW gearless mill drive (GMD) system for a 26 ft ball mill, including transformers, ring motor …
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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 …
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The ABB gearless mill drive (GMD) is the most powerful mill drive system available, combining the highest levels of efficiency, reliability, flexibility and availability. 3 Competence in grinding For many decades, ABB's optimized mill drive solutions have consistently set new productivity
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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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The three gearless mill drive (GMD) systems are the ABB most powerful ever made. The GMD for the 40-foot SAG mill has a power rating of 28 megawatts (MW), and the GMDs for the two 28-foot ball mills have a power rating of 22 MW. They are the largest diameter and most powerful SAG and ball mills drive systems at the highest altitude installed to ...
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The gearless, mill-drive systems enable the grinding mills to achieve the best possible grinding results and process efficiency by adjusting the speed or direction of the mega-sized mills, and ensuring a constant particle size, regardless of changes in the …
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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 …
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Antamina Compania Minera Antamina S.A. Peru Project: One SAG Mill and 3 Ball Mill Drive Systems Capacity: SAG Mill 1000 t/h Ball Mills 1000 t/h Consultant: Bechtel, USA Mill Builder: FFE Minerals, USA 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
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The gearless mill drive eliminates all mechanical components of a conven-tional mill drive system, such as ring-gear, pinion, gearbox, coupling, Increasing availability through advanced The Gearless Mill Drive system consists of the ring motor with its feeding cycloconverter, pre-installed in an E-house.
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ABB's delivery included one gearless mill drive system (GMD) for a 40 ft semi-autogenous mill and two low-speed dual pinion ring-geared mill drive systems (RMDs) for two 26 ft ball mills; making Mount Milligan's grinding circuit one of the most advanced …
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ABB gearless mill drive systems feature numerous benefits when compared with conventional geared drive systems: superior reliability, increased process availability, extended life span and improved energy efficiency. ABB delivered the world s first gearless machine drive in 1969, which is still operating at the Ciment Lamberg-Lafarge cement ...
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Cobre Panama starts up gearless mill drive systems. In line with the achievement of commercial production of copper at First Quantum's Cobre Panama, ABB has confirmed the commissioning of six gearless mill drives at Panama's newest active open-pit mine. Six ABB gearless mill drives have been commissioned at Panama's newest mine, Cobre Panama.
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Up to 300,000 tons of copper will be mined at Sentinel, one of FQM's flagship plants. For copper mines of this size, reliable, high efficiency mills are top priority. FQM has opted for Siemens Gearless Mill Drives to be used in the two SAG mills having a diameter of 40 feet and an output of 28 MW and the two ball mills with a diameter of 28 feet and an output of 22 MW. With these mill drive ...
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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 …
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Extend the life cycle of shovels and draglines significantly. Crushing system upgrades and retrofits. Drive systems for crushers Increasing efficiency and extending the crusher life cycle. Stockyard and mine machines upgrades and retrofits. From extraction, transport, and shipping, with an integrated control concept from a single source.
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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 …
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Gearless mill drive system (GMD) 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 (SAG), ball …
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Fig. 4. Air gap monitoring system in a gearless drive. Gearless Drives for grinding mills. Gearless Drives are well proven stateof- the-art technology for large grinding mills. Siemens, the company that introduced Gearless Mill Drives (GMD) to …
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This puts the application in the realm of a single mill with gearless drive. xPower demand of more than 28 MW. Chat Online; Update on JHEP SAG Mill Drive Selection Gear Strength . 2016 1 23 All parameters above are good for a 22.5MW to 24MW dual pinion SAG mill drive. Changes to AGMA standard have revitalised the large gear cutting industry and ...
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The gearless conveyor drive (GCD) system eliminates the gearbox from the drive and is one of the most energy efficient means of transportation for bulk material. It uses electric energy and allows almost CO₂ free transportation with a low carbon …
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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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A cycloconverter-fed gearless mill drive is a drive system that has hardware and software protection functions to protect the equipment in case of abnormal operating conditions, malfunctions or ...
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