gearless sag mill slip ring motor

gearless sag mill slip ring motor

Gearless mill drives - Grinding ABB

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

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gearless gearless drive mills and crushers

The SAG mill was fitted with a gearless drive with a power rating of 24 MW and the ball mills were also fitted with gearless drive systems each providing 164 MW Also included in the scope of. Get Price Mill (grinding)Wikipedia. Chat Online; gearless sag mill slip ring motor. HGT Gyratory Crusher. Gearless Drive Mills And Crushers And Mw.

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SAG Milling in Australia -Revised Submission

The CCV – ring motor (gearless) drive is used at Cadia (20 MW) and Olympic Dam (18 MW). 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

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SIMINE Gearless mill drives - Siemens

SIMINE Gearless mill drives – outstanding reliability for your mine The gearless concept The gearless drive avoids any contact between the rotating mill and the static parts of the motor. This allows for contin-uous workflow without maintenance on the gears or the pinions. What used to be downtime is now productive time.

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Starter of SAG Mills with rotor resistance

Sep 17, 2013  wound rotor motor is not the best option for SAG mills becuse the slip rings always are a problem even with liquid resistors.Best option is synchronuos motor in combination with variable frequency drive.However if you already have the wound rotor motor the ERS operation is simple.

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SAG Milling in Australia -Revised Submission

The CCV – ring motor (gearless) drive is used at Cadia (20 MW) and Olympic Dam (18 MW). 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

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gearless mill drive system - greenrevolution.org

SAG mill grinding process - Gearless mill drives systems - Gold Ore Crusher. GMD system SAG mill. Slip Energy Recovery Drives. These drive systems use slip ring motors and are started similarly using starting resistors, thereby limiting the inrush current.Capital expenditure for gearless mill drives is typically higher than for other drive systems.

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Dual Motor Sag Mills - salondelmar.pl

Ring-geared mills.In fact the rotor of the ring motor is the mill itself and the stator is built around the mill shell.This is also the reason why the ring motor is also known as wrap-around motor.9 12 6 18 36 central drive single pinion dual pinion gearless number of mills power mw 4 figure 1.Quantity versus power of mill systems.

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ring motor for ball mill - annasweethome.de

Cement mill motors Medium voltage motors. Slip ring electric motors for ball mill cement mill and raw mills The first class manufacurer and suplier of large slip ring motors with fast delivery time and high flexibility Type asynchronous slip ring electric motor Power 160 to 5000kW Voltage 400V 690V 3300V 6000V 6600V 11000V Frequency 50Hz or 60Hz Number of poles 4 6 8 10

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Starter of SAG Mills with rotor resistance

Each mills have two motors of 8000 kW at 13.8 kV. A: For large mills requiring variable speed, the wound rotor motor and SER drive are economical for a total rating of approximately 2MW to 16MW. Above 16MW, the gearless drive (cyclo-converter) is typically used because gearboxes and pinion gears reach their present limit in size.

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Benefits of continuous data acquisition from critical ...

Figure 4: Two SAG Mills 24MW each and Two Ball Mills 16.4 MW each with Gearless Mill Drives For larger applications the well-proven Gearless Mill Drive (GMD) technology has shown to be very effective since its introduction in mining in 1980; currently in operation for horizontal mills up to 40 feet (~12.2m) diameter with power ratings up to 28 ...

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Peter Warner - Expert Consultant - Martec LinkedIn

This extended from gearless mill drives to geared mills to mine winders. During this time my main interest was geared mill drives ("GMDs") in South Africa and Chile. I consulted on 11 GMDs: a) 2 x 26’, 17,5 MW BM b) 40’, 21 MW SAG and 2 x 26’, 16,4 MW BM c) 40’, 22 MW SAG and 2 x 26’, 16,4 MW BM d) 40’ 22 MW SAG and 2 x 26’ 16,4 MW BM

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Why do we use carbon brushes in a slip ring motor? - Quora

The carbon brushes are used in slip ring motor for the following reasons. 1. The carbon is conductor of electricity. 2. The carbon is soft meterial and when it touches to the slip ring it wears. The slip ring is made of steel or phosporous bronze....

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Wound Rotor Motor Mill Drives - Fact Jeugd Noord

Wound Rotor Motor Mill Drives. A wrim is a type of induction motor with unique construction , in the cement and mining industry for starting and driving large grinding mills in fact, until about 1985, a wound rotor induction motor was the , motors on grinding mills, slip power recovery drives have been applied in other industries, such as in municipal chat online.

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Grinding mills. - Free Online Library

Sep 01, 1991  The mills are of the Allis Sala design, 3.3 m diameter by 4.3 m long, and are fitted with SKF spherical roller antifriction trunnion bearings. Each mill is driven by a 700 kW Brush slip-ring motor and contains up to 60 t of steel balls as grinding media. Rotational speed of the mill shell is 17.8 rev/min.

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Dual Motor Sag Mills - salondelmar.pl

Ring-geared mills.In fact the rotor of the ring motor is the mill itself and the stator is built around the mill shell.This is also the reason why the ring motor is also known as wrap-around motor.9 12 6 18 36 central drive single pinion dual pinion gearless number of mills power mw 4 figure 1.Quantity versus power of mill systems.

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design of motor drives for ball mills

Gearless mill drives - Grinding ABB. 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. Get Price

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Starter of SAG Mills with rotor resistance

Each mills have two motors of 8000 kW at 13.8 kV. A: For large mills requiring variable speed, the wound rotor motor and SER drive are economical for a total rating of approximately 2MW to 16MW. Above 16MW, the gearless drive (cyclo-converter) is typically used because gearboxes and pinion gears reach their present limit in size.

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Motors Automation Energy Transmission Distribution ...

J Slip ring/Wound Rotor Induction Motor (WRIM) + liquid rheostat starter (supplied by others) and associated electrical equipment: switchgear, slip energy recovery (supplied by others) J Low Speed Synchronous Motor (LSSM) direct coupled to mill pinion (without gearboxes) and starting direct-on-line

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Mining - Grinding and Processing WEG

Grinding and processing. WEG offers the most reliable and efficient solutions for milling plants for ferrous and non-ferrous products with their experience of mill drive systems. In the heart of a processing plant, the ball and SAG mills must be driven by solutions that adapt to the characteristics of the minerals in line with the whole process.

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Wound Rotor Motor Mill Drives - Fact Jeugd Noord

Wound Rotor Motor Mill Drives. A wrim is a type of induction motor with unique construction , in the cement and mining industry for starting and driving large grinding mills in fact, until about 1985, a wound rotor induction motor was the , motors on grinding mills, slip power recovery drives have been applied in other industries, such as in municipal chat online.

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UPDATES ON GEARED VS GEARLESS DRIVE SOLUTIONS FOR

The current paper looks at evaluating the merits of large geared mills versus gearless driven mills by evaluating the following factors: The capability of currently available systems in terms of power and mill diameter Efficiency in terms of overall electrical power consumed vs mechanical output power Capital cost Running costs Cooling requirements in terms of air versus water cooling ...

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Peter Warner - Expert Consultant - Martec LinkedIn

This extended from gearless mill drives to geared mills to mine winders. During this time my main interest was geared mill drives ("GMDs") in South Africa and Chile. I consulted on 11 GMDs: a) 2 x 26’, 17,5 MW BM b) 40’, 21 MW SAG and 2 x 26’, 16,4 MW BM c) 40’, 22 MW SAG and 2 x 26’, 16,4 MW BM d) 40’ 22 MW SAG and 2 x 26’ 16,4 MW BM

Read More
Grinding mills. - Free Online Library

Sep 01, 1991  The mills are of the Allis Sala design, 3.3 m diameter by 4.3 m long, and are fitted with SKF spherical roller antifriction trunnion bearings. Each mill is driven by a 700 kW Brush slip-ring motor and contains up to 60 t of steel balls as grinding media. Rotational speed of the mill shell is 17.8 rev/min.

Read More