Gearless Sag Mill Slip Ring Motor

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Issue 3| 2014 MineralsFocus

tems consists of 20 slip-ring motors for the main drives, 12 gearboxes, 33 ... Two 38 ft SAG mills each with a 20 MW Gearless Mill Drive Sinamics drive control ... Siemens consists of two ring motors, wrapped around the mill, with a power output of 20 MW each and the new

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Advantages of SER drives for SAG mills | GoHz

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 …

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Large Sag And Ball Mill Drive Systems

SAG mills . Gearless mill drive (GMD) technology has further expanded the use of large SAG milling allowing to produce the world's largest SAG mill of 42' in diameter drawing power at 28 MW. Today, is the world leading supplier of gearless SAG mills operating globally.ball mill drives maldivedelsudsalento.

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Ring-geared mill drives - Grinding | ABB

Mill application features. Frozen charge protection – Detects frozen charge in the mill, minimizing equipment wear and liner replacements.; Coupling supervision – Detects if a failure or slippage occurs in the couplings and stops the system in case, preventing major damages.; Stand-still detection – Prevents the motors from re-starting if the mill is still rocking or moving after a …

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Ring gear drives huge grinding mill | Machine Design

The largest ringmotor- driven mill in the world is a 36-ft diam., 16,000-hp SAG mill that processes up to 2,000 tons of ore per hour. Located at Kennecott Utah Copper near Salt Lake, this mill uses...

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Gearless Mill Drive Sales Rev Up to Meet Demand

The Los Bronces SAG mill drive is rated at 22 MW and the ball mill drives at 16.4 MW. • A €20-million order on December 10, 2008 from Compania Aurifera Brisas del Cuyuni C.A., a subsidiary of Gold Reserve Inc., for gearless mill drives for two 36-ft-diameter SAG mills at the Brisas gold-copper project in Venezuela.

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improves efficiency of the grinding process

SAG mill grinding process Gearless mill drives systems Gold Slip Energy Recovery Drives. These drive systems use slip ring motors and are started similarlyget price. Request a quoteget price. Maximize your grinding efficiency TON. Get Price. Improves Efficiency Of …

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air operated mill inching drive

3800 Series Air Motors. 3800 and 3840 series, in-line planetary gear, multi-vane air motors. Up to 1.55 HP and 1,100 RPM. Adjustability through air controls. Learn More. Remote Diagnostic Services for Gearless Mill Drives. availability of the mill. GMDs are quite robust concerning the way they can be operated.

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Low Speed (Below 6 Pole) Motors - Baldor

The ABB synchronous motors are known for meeting the high performance standards demanded by many of key industries and industrial sectors all over the world. This can be seen in our extensive line of Low Speed" synchronous motors which range from 1 to 70 MW in both fixed and variable speed designs.

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Used Sag Mills for sale. Hardinge equipment & more | Machinio

26 x 14 ft (7.9 x 4.2 m) SAG Mill 6,300 HP (4700 kW) Motor. 26 x 14 ft (7.9 x 4.2 m) SAG Mill 6,300 HP (4700 kW) Motor Variable speed drive available at extra cost. Mill includes: - main drive motor Slip Ring 6,300 HP - liquid resistance starter, includes variable speed d...

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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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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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(PDF) | P a g e AUTOGENOUS AND SEMIAUTOGENOUS MILLS 2010 ...

Ring Motor driven (gearless) SAG mills have been sold i n sizes from 8,20 0 kW (11,000 HP) through 27,980 kW (37,5 20 HP). The first SAG mill to utilize ring motor design were the t wo 9.75 m x 5 ...

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Starter of SAG Mills with rotor resistance

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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ABB motors for the cement industry

ABB slip-ring motors offer more torque for heavy-duty mining and cement applications. Video. ABB Ability™ Smart Sensor condition monitoring solution. ... Go Gearless Gearless Mill Drives (English - pdf - Brochure) Certified Mining Motors (English - pdf - Brochure)

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motores molino sag siemens - salamoonlight.es

sag mill motors rbritiin gearless sag mill slip ring. gearless ring motor for sag mill principles. Acquired experience in motor maintenance on 18MW 38feet wrap around/Gearless Mill motors for Sag, and a ring motor (gearless, the wraparound principle or . sag mill motors rbritiin gearless sag mill slip ring motor READ MORE

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abb motor for cement mill

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 design to provide highest throughput, reliability

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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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ring motor sag mill - cucinanapoletana.fr

Barite Powder Project with Capacity 60,000 per Year. $?125:00 Live Chat + More More

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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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[ motor power to drive ball mill ]

10,000 tpd gold plant wsag ball mills, gyratory cone crushers, rock breakers more, unused 36 x 23 ag mill w1500 kw motor and 22 x 41 regrind ball mill 13,405 hp total power, unused mp1000 cone crusher, unused fl 40 x 25 gearless …

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1930 Wound Rotor Motor Mill Drives

Slip ring motors or also called wound rotor motors are the heart in a lot of drive applications in the high power range. They are most commonly used in the raw material industry like mining of ore and minerals or in the binders industry like cement, limestone and gypsum in diverse technologies of crushers, roller presses and mills but also in ...

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Vibrations for Gearless Mill Motor

Gearless Drives - Siemens. company received its first order for a gearless drive for use in the mining industry: the Norwegian mining company Aktieselskabet Sydvaranger ordered a gear-less drive with an output of 8,100 kW of power for an iron ore-mill with a …

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Menzel wins Canadian mill motor order

Menzel wins Canadian mill motor order. 15 November 2021. Menzel Elektromotoren has adapted and delivered a 6500kW slip ring motor for a Canadian cement mill at short notice. The MEBSSL-type motor is ideally suited for industrial applications with high starting torques. Menzel adapted the internal motor winding connections for a 60Hz mains ...

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Electrolytic starter (LRS) for high power slipring motors ...

Why using a starter for slip ring motors. In order to start a slip ring motor, the accelerating torque has to be sufficiently higher than the resisting torque. Higher is the inertia, higher has to be the accelerating torque, otherwise the start will be very long and the motor can be damaged by the heating. If the motor is started directly ...

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jaw crusher how it operates | worldcrushers

SAG mill grinding process – Gearless mill drives systems … Slip Energy Recovery Drives. These drive systems use slip ring motors and are started similarly using starting resistors, thereby limiting the inrush current. Crusher Mills, Cone Crusher, Jaw Crushers – Heavy Industry ...

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Handbook of Electric Machines - Infineon Technologies

ends by means of the end-rings. In the slip-ring rotor the three-phase rotor windings are not short-circuited, but accessible through the slip-rings. External resistors can be connected to the rotor circuit, which improves the self-starting performance of the motor fed from three-phase grid with fixed frequency (see also Figure 7).

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Gearless mill drives - Grinding | ABB

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 …

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SIMINE Gearless mill drives

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. Vibration-free, low-weight, short-circuit- proof design with high stiffness

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.ppt - book118

This animation Lower Stator Assembly Angled Liner Bolts Assembly of Discharge System Pulp Discharge Channels 40 ft. SAG Mill @ Cadia 26,000 HP Ring Motor 26,000 HP SAG Mill @ Cadia Self Propelled Chute Mill Circuit @ Cadia 26,000 HP SAG Mill Two 11,725 HP Ball Mills 22 ft x 36.5 ft Ball Mills @ Cadia 22 ft. x 36.5 ft. Ball Mill Motorized Feed ...

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what are ring motors for sag mills

Gearless Drives. autogenous grinding (SAG) mills in the framework of an order for two 32-foot SAG mills with a performance of 11,200 kW. This project for the Chuquicamata mine in Chile represented a monumental achievement, as the difference between creating a drive for a 21-foot diameter ring motor and a 32-foot ring motor .

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Low, High Voltage Slip Ring, Squirrel Cage Motors

JR slip ring motor for ball mill JR ball mill motor adopts rotor string resistance full-voltage start-up, which has the advantages of small starting current, large starting torque, high efficiency, low noise, low vibration, good ventilation performance, …

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what are ring motors for sag mills

sag mill wrap around motor ameland bungalow kievitnl. The 42 foot ring motor is the centerpiece of the gearless drive and wrapped around the tube mill An increase in tube diameter means that the mass of the ore being ground rises dramatically and hence also the strain on structural elements and the motor Because SAG mills rely both on the ore itself as …

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Mining - ElectroDrives SL

Fast-speed Wound Rotor Induction Motors (WRIM) or Slip Ring Motor used together with the gearbox, a Liquid Resistor Starter (LRS) for starting and Slip Energy Recovery Drive (SER Drive) for SAG mill speed control. Fast-speed Squirrel Cage Induction Motors (SCIM) with gearbox and clutch with a Solid-State Soft Starter (SSS) f or starting.

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LAKE COWAL|EMF

Lake Cowal is a gold mine in NSW operated under Evolution Mining. EMF has recently completed cleaning and inspecting the Ball and SAG mill gearless drive motors. This involves entering the motors through inspection hatches and meticulously brushing and vacuuming the internal windings along with a thorough inspection of the insulation, slip ring ...

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mills variable speed drive

Variable Speed Drive. This can be accomplished by turbines, direct current motors, variable speed motors or slip-ring motors. The fan output capacity and pressure can be varied with the changing speed of the driver. For capacity reductions below 50%, an outlet damper is usually added to the system.

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TMdrive -10SPR Product Application Guide

Application 2. Slip Power Recovery Drive System for a grinding mill SAG Mill and Motor The Best Solution: TMdrive-10SPR for each pump • The SPR drive carrying slip power is much smaller and less expensive than an MV drive carrying all the …

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Used Sag Mill for sale. Hardinge equipment & more | Machinio

26 x 14 ft (7.9 x 4.2 m) SAG Mill 6,300 HP (4700 kW) Motor. 26 x 14 ft (7.9 x 4.2 m) SAG Mill 6,300 HP (4700 kW) Motor Variable speed drive available at extra cost. Mill includes: - main drive motor Slip Ring 6,300 HP - liquid resistance starter, includes variable speed d...

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Slip ring induction motor complete details. Induction ...

Here in this video Slip ring induction motor complete details. Induction motor parts and maintenance. Mill drive motor you will learn how a large slip ring i...

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Bharat Bijlee Ltd

Motor Type Frame Power (kW) Polarity Image; Crane & Hoist Duty Motors: 71 to 355: 0.37 to 400: 4, 6, 8: Brake Motors (With Integral DC Brake) 71 to 132: 0.37 to 9.3: 2, 4, 6, 8: Brake Motors (With External Mounted Brake) 71 to 200: 0.37 to 22: 2, 4, 6: Slip Ring Motors : Crane Duty: 100 to 160: 1.1 to 10: 4, 6