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 40ft semiautogenous (SAG) mill and two lowspeed dual pinion ringgeared mill drive systems (RMDs) for two 26ft ball mills; making Mount Milligan's grinding circuit one of the ...
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
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 and autogenous (AG) mills, This 'workhorse' for grinding operations combines a robust, servicefriendly and fit for purpose ...
1 x MW gearless mill drive system (GMD) to power the 40 ft SAG mill ; 2 x 13 MW lowspeed dual pinion ringgeared mill drive systems (RMD) to power the plant's 26 ft ball mills; Both drive solutions share many common operation and maintenance features such as frozen charge protection, frozen charge remover, controlled rollback, automatic ...
Figure 3: Dual pinion ball mill with 6500 kW Low Speed Squirrel Cage Induction motors using VFC Figure 4: Two SAG Mills 24MW each and Two Ball Mills MW each with Gearless Mill Drives For larger applications the wellproven Gearless Mill Drive (GMD) technology has shown to be very effective since its
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.
Gears and pinions A complete range of gear and pinion sets, inspections, design, installation and alignment services to drive your mill's performance Introducing a new name Metso Outotec is proud to announce the launch of our new rebranded offer: Metso Outotec Gears and Pinions. You can expect the same quality supported by decades of gearing and
2 Metso 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 Metso 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.
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.
For more information: continuously extends technical and performance frontiers of ringgeared mill drive technology to fit site requ...
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This paper concentrate s on modern motor and drive solutions for s ingle and dual pinion driven Ball an d SAG . ... girth gear. For the twinsynchronous motor drives, the angular position of the ...
If the mill requires approximately 6000 horsepower or less, it is possible to drive it with a single pinion. To date, however, economics has dictated that most mills over 3500 horsepower be driven with two pinions, using wound rotor motors driving thru speed reducers.
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.
The gearless mill drive eliminates ringgear, pinion, gearbox, coupling, motor shaft and motor bearings, used within a conventional mill drive system. By mounting the rotor poles directly onto ... • 28 MW GMD for a 40' SAG mill • 28 MW GMD for 42' SAG mill Whether it is size or an installation at the highest
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.
7 MW Helical mill pinions The natural progression in gear/pinion mill drives: The Metso 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 ...
· When mill power is between 18 and 20 MW, which is the current manufacturing limit of ring geared mills [2], either a gearless mill drive (GMD) or a ring geared mill with dual pinion motors can be chosen. Selecting between gearless or ring geared design is mostly dependent on size of the mill and power and speed requirements [3].
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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.
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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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.
mill, the AG/SAG mill will have a critical rotatio n speed above which grinding ceases. Mill motor types . ... Figure 2 A dualpinion, ringgeared mill with ABB drive system .
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