The grinding process with one 34' x 20' SAG mill and two 24' x ' ball mills will be briefly discussed. All three mills are gear driven by a ring gear, dual pinion and two low speed synchronous motors. Copper Mountain has installed on all three mills, the new stateofthe art dual pinion mill drives.
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ABB Library is a web tool for searching for documents related to ABB products and services.
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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. ... and variable frequency drive technology on twin pinion drive ...
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This gives the following mill drive capabilities: Gearless Drive Ball > / SAG/AG > m diameter 15 to 35MW Dual Pinion Drive Ball < / SAG/AG < diameter up to 20MW Single Pinion Drive Ball < / SAG/AG < diameter up to 10MW. comparisons of efficiency in terms of electrical power
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Approx. relative cost Gearless Drive Highest 150% Variable Speed Low Speed Sync 130% Fixed Speed Low Speed Sync 125% Variable Speed High Speed Asyn 115% (VSI) Variable Speed High Speed Asyn 110% (SER) Fixed Speed High Speed Asyn Lowest (LRS) 20 MW Variable Speed SAG Mill SAG MILL VARIABLE TWIN PINION DRIVE GMD WRIM/SER SYN SCIM ...
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KEYWORDS SAG mill, ball mill, ring gear, dual pinion, drive systems, variable speed INTRODUCTION The project is located 15 km southwest of Princeton, British Columbia (BC), an established mining town. The initial exploration at Copper Mountain dates back to 1884.
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2 d4 TM Mill Drivesystem 7 MW 7 MW 14 MW 28 MW 7 MW 4 MW 7 MW 7 MW 7 MW 4 MW 7 MW 7 MW SAG mill 32 ft. single drive The natural progression in gear/pinion mill drives: The QdX4TM Mill Drive provides the next step in the evolution of change in mill drive architecture, while allowing the system to be built with components that are within current manufacturing capabilities.
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Download scientific diagram | A dualpinion, ringgeared mill with ABB drive system from publication: Increasing Throughput Reducing Energy Consumption and Minimizing Wear on Grinding Mills ...
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We provide optimized mill drive solutions for all types of ringgeared mills: low and high speed, single and dual pinion, with and without a gearbox — all designed for reliable, long life and low maintenance operation. Video explaining ABB ring geared mill drive technology eBook: Grinding transformation
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's latest innovation, the QdX4 (TM) Mill Drive System helps customers achieve high efficiencies in mining operations Corporation's press release on November 2, 2015 at 10:00 EET
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ABB has successfully commissioned three variablespeed mill drive systems at Thompson Creek Metals' Mount Milligan copper/gold mine in Canada.. ABB's delivery included one gearless mill drive system (GMD) for a 40ftdiameter () semiautogenous (SAG) mill and two lowspeed, dualpinion, ringgeared mill drive systems (RMDs) for two 26ft (8m) ball mills.
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It has been the industry standard for SAG mills above 13 MW capacity. However, pinion systems to 8 MW per pinion and dual motor systems with quadruple pinions extend the range of gear driven mills to a theoretical limit of 32 MW. The Ernest Henry SAG mill (11 MW) is currently the largest twin pinion single drive mill installed in Australia.
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Update on JHEP SAG mill. drive selection Dual pinion versus Gearless in view of changes to AGMA standards Selection concerns Gear design improvements leading to increased tolerances to Hertz ... In short, it is a very clear that a SAG mill ring gear designed for in AGMA is more than sufficient for 24MW in AGMA 6014/6114.
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SAG mill, ball mill, ring gear, dual pinion, drive systems, variable speed INTRODUCTION . SAG mill rated motor speed 204 rpm, max. motor speed 214 rpm. vertical mill gear dual pinion Mining
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and variablespeed drives, two gearless mill drives, two 2×5 MW dual pinion drive systems, four per manentmagnet motors, 23 distribution transformers, gasinsulated switchgear, a harmonic filter system, the extended process control System 800xA and of course a comprehensive service contract 1.
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The grinding process with one 34' x 20' SAG mill and two 24' x ' ball mills will be briefly discussed. All three mills are gear driven by a ring gear, dual pinion and two low speed synchronous motors. Copper Mountain has installed on all three mills, the new stateofthe art dual pinion mill drives.
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Copper Chile for a 40ft SAG mill GMD drives still have a lot of minor ... without those offered by the various suppliers. for Australia dualpinion drive systems for ... areas are very focused on the including a number of common they are expected to introduce to market mill structure, girth gear and drive train ...
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developed for single pinion or dual pinion applications depending on the power of the driven mill. High speed solution. Typically, a high speed squirrel cage motor with three or four pole pairs is used for this kind of configuration. A gearbox is needed in this solution, where the high speed side is connected to the motor,
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7 MW Helical mill pinions The natural progression in gear/pinion mill drives: The QdX4TM Mill Drive provides the next step in the evolution of change in mill drive architecture, while allowing the system to be built with components that are within current manufacturing capabilities.
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In general use, few applications of gear drives in industrial applications are selected on the basis of service factors. Normally service factors are, or greater. Mill drive inchers can use this low value of service factor based on the limited operation over the twenty five year expected life. Regular inspections of the gear drive,
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Nowadays this is restricted to approximately 9 MW for single pinion solution. Above this power a dual pinion configuration is required, this also implies that mills bigger than 18MW can only be driven by GMDs. 9 12 6 18 36 Central Drive Single Pinion Dual Pinion Gearless Number of mills Power [MW] 4 Figure 1: Typical mechanical mill configurations
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1 An installed and commissioned 2 × 5 MW dualpinion ringgeared pebble mill In dualpinion mills,the system is driven by more than one motor, which are mechanically coupled to each other to ensure load sharing. ... (SAG)2 mill drives, but not necessarily for ball and pebble mills. A significant number of large SAG and ball mills
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Until now, geardriven solutions for large SAG and ball mills have been limited to 18 MW. In the past, grinding mills operating between 18 MW and 28 MW required a large electrical wraparound motor, known as a Gearless Mill Drive (GMD). The QdX4 system has been developed as an alternative to GMDs.
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Singlepinion and dualpinion fixedspeed gear drives offer a relatively simple design. However, process flexibility and optimization can only be achieved with variable speed drives. Furthermore, mechanical problems and maintenance for gearboxes increase operating cost and reduce availability of ball and SAG mills.
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Singlepinion and dualpinion fixedspeed gear drives offer a relatively simple design. However, process flexibility and optimization can only be achieved with variable speed drives. Furthermore, mechanical problems and maintenance for gearboxes increase operating cost and reduce availability of ball and SAG mills.
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SAG mill 32 ft. single drive The natural progression in gear/pinion mill drives: The QdX4TM Mill Drive provides the next step in the evolution of change in mill drive architecture, while allowing the system to be built with components that are within current manufacturing capabilities.
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For more information: continuously extends technical and performance frontiers of ringgeared mill drive technology to fit site requ...
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the mill shell via a ring gear or a ring motor. The ring gear meshes either with a pinion in the case of a conventional drive or with the COMBIFLEX® reducer. Selfaligning pinion A selfaligning pinion can be applied if the ring gear is a spur type. Such drives then need no realignment of the ring gear and pinion mesh after the installation of the
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India is rich in various mineral resources and it is an important mineral processing market
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