gearless ring motor for sag mill principles

  • Gearless Drives static.dc.siemens

    plied gearless drives for two 36-foot ring motors, de-veloping a 12,000 kW gearless drive for the Kennecott, Utah, SAG mill and a 11,200 kW gearless drive for the El Teniente, Chile, SAG mill. In a continued call for larger, even more powerful drives, Siemens kept pace. In 1996, Freeport ordered the first gearless drive for a 38-foot SAG mill

  • 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 mill itself becomes the rotor of the gearless motor.

  • ABB ring geared mill drives YouTube

    Jun 05, 2013· We provide optimized mill drive solutions for all types of ring-geared mills: low and high speed, single and dual pinion, with and without a gearbox — all designed for reliable, long life and

  • Author: ABB
  • Sentinel: Siemens Gearless Mill Drives YouTube

    Jan 19, 2016· The mills at Sentinel in Zambia are amongst the world’s biggest, with 2 off 40 ft SAG mills complete with 28 MW drives, and 2 off 28 foot-ball mills with 22 MW drives. For mines of this size

  • Author: Siemens
  • Ring gear drives huge grinding mill Machine Design

    Ring gear drives huge grinding mill. SAG mills can operate at a fixed speed or adjustable speed through the use of ac synchronous motors or dc motors. and a ring motor (gearless drive

  • Gearless Warp Around SAG Mill

    Gearless Warp Around SAG Mill. Previous Next. View Larger Image; For almost a decade now, very good operating experiences have been gained with a total of 28 gearless ring motor drives in the cement industry, driving tube mills with diameters of 2.5 to 4 meters with drive powers ranging from 3000 to about 5000kW.

  • Increasing availability through advanced Gearless Drive

    Gearless Mill Drive (GMD) systems are characterized by having the motor wrapped around the mill like a ring. For this reason, they are often referred to as ring motors. The rotor poles are attached directly to the mill (head) flange, and hence the rotor becomes an integral part of the mill, as shown in figure 4.

  • vibrations on a gearless mill motor hofvanhoeven

    vibrations on a gearless mill motor . Gearless Drives ens. plied gearless drives for two 36-foot ring motors, de-veloping a 12,000 kW gearless drive for the Kennecott, Utah, SAG mill and a 11,200 kW gearless drive for the El Teniente, Chile, SAG mill.

  • Mill (grinding) Wikipedia

    SAG is an acronym for semi-autogenous grinding. SAG mills are autogenous mills that also use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%. The largest SAG mill is 42' (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor.

  • Related items: Mortar and pestle, Expeller, Extruder
  • sag mill wrap around motor grinding mill china

    gearless ring motor for sag mill principles pochiraju.co. SAG mill, 40 ft, 42 ft, gearless mill drive, GMD, SAG manufacture, reliability .. The gearless motor (also called wrap-around motor or ring motor) is a very large . this modification from axial to radial cooling, the cooling principle of the GMD.

  • Gearless mill drives ABB Group

    The poles of the gearless or synchronous motor (also called wrap-around motor or ring motor) are directly installed on the pole flange of the mill shell, turning the mill body into the rotor. The stator is then wrapped around the mill. The gearless motor is fed by a cycloconverter which has a rated output frequency of around 5 Hz for the GMD drive.

  • What Are Ring Motors For Sag Mills

    gearless ring motor for sag mill principles. how does a ball mill motor work sirptsciencecollege. Calculations for mill motor power, mill speed and SAG mill and two 26 ft ball mills, all made by. . Get Price And Support Online; sag mill trunnion lube ring gear lube mdubiz.

  • Grinding Mill Foundations eand.au

    Sep 23, 2014· Most of our work since 2000 has been in developing grinding mill foundations to avoid vibration and unacceptable deflections. On a recent project for a plant in Peru, the client was told by the mill vendor that there was no need to do a systems (dynamic) analysis on the mill foundations because the mills on that project were gear driven rather than being driven by ring motors (gearless drives).

  • vibrations on a gearless mill motor hofvanhoeven

    vibrations on a gearless mill motor . Gearless Drives ens. plied gearless drives for two 36-foot ring motors, de-veloping a 12,000 kW gearless drive for the Kennecott, Utah, SAG mill and a 11,200 kW gearless drive for the El Teniente, Chile, SAG mill.

  • Increasing Availability through Advanced Gearless Drive

    The comparison of a conventional drive train to a gearless drive for a grinding mill is shown in Fig. 1. Figure 1 Top view of SAG-Mills with alternative drive options; left side: dual pinion drive including motor, gearbox, pinion and girth gear; right side: gearless ring motor What’s the benefit?

  • GMD infographic final ABB Group

    systems eliminate all mechanical components of a conventional mill drive system, such as ring-gear, pinion, gearbox, coupling as well as motor shaft and bearings, thus offering better energy efficiency, superior reliability, increased process availability and longer lifespan. The ABB gearless mill drive is the most powerful mill drive system in

  • GEARS & DRIVES IRevival of the GMD in cement

    Figure 3: fitting of rotor poles on a large SAG Mill Figure 2: three-phase synchronous ring motor (wrap around motor) Figure 1: the new gearless mill drive for cement comes in two segments Figure 4: operating principle of a cyclo converter: the motor voltage is generated directly from the supply voltage

  • Increasing availability through advanced Gearless Drive

    Gearless Mill Drive (GMD) systems are characterized by having the motor wrapped around the mill like a ring. For this reason, they are often referred to as ring motors. The rotor poles are attached directly to the mill (head) flange, and hence the rotor becomes an integral part of the mill, as shown in figure 4.

  • SAG Mill Variable Speed Drive

    The gearless drive comprises a synchronous motor designed to operate at low variable frequency from a cycloconverter power supply (CCV). The motor rotor is mechanically attached directly to the rotating members of the mill itself, the stator superstructure is floor mounted, encompassing the rotor.

  • Ring-geared mill drives Grinding ABB

    Ring-geared mills operated with frequency converter (much more than just variable speed) (English pdf Article) Use of the latest technology to overcome the demands of mill operation (English pdf Article) Ring-Geared Mill Drives Flexible and smooth operation Brochure (English pdf Brochure)

  • Gearless Mill Drives Beneficiation Siemens

    The Siemens 42-ft Gearless Mill Drive, still an evolutionary design approach? (SAG Conf. 2015) Optimization of the drive system for a cyclone feed pump (SME 2015) Increasing availability through advanced Gearless Drive Technology (CMP 2014) Design and dynamic behavior of large ring motors for grinding mills (SMMH 2012)

  • Sag Mill Synchronous Motors Henan Mining Machinery and

    Sag Mill Synchronous Motors Prompt : Caesar is a famous mining equipment manufacturer well-known both at home and abroad, major in producing stone crushing equipment, mineral separation equipment, limestone grinding equipment, etc.

  • gear drive sag mill vs gearless drive sag mill

    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 mill itself becomes the rotor of the gearless motor.

  • Preprint 13-050 ceecthefuture

    Preprint 13-050 UPDATES ON GEARED VS GEARLESS DRIVE SOLUTIONS FOR GRINDING MILLS R. Kalra, CITIC-HIC Pty Ltd, Sydney, NSW, Among the many reasons that geared drives on large SAG mills are not favoured, is due to not having an efficient variable speed drive interface between the mill vendor and the gearless motor supplier.

  • Gearless Mill Drives Beneficiation Siemens
    The Siemens 42-ft Gearless Mill Drive, still an evolutionary design approach? (SAG Conf. 2015) Optimization of the drive system for a cyclone feed pump (SME 2015) Increasing availability The Siemens 42-ft Gearless Mill Drive, still an evolutionary design approach? (SAG Conf. 2015) Optimization of the drive system for a cyclone feed pump (SME 2015) Increasing availability through advanced Gearless Drive Technology (CMP 2014) Design and dynamic behavior of large ring motors for grinding mills (SMMH 2012)
  • Sag Mill Synchronous Motors Henan Mining Machinery and
    Sag Mill Synchronous Motors Prompt : Caesar is a famous mining equipment manufacturer well-known both at home and abroad, major in producing stone crushing equipment, mineral separation Sag Mill Synchronous Motors Prompt : Caesar is a famous mining equipment manufacturer well-known both at home and abroad, major in producing stone crushing equipment, mineral separation equipment, limestone grinding equipment, etc.
  • gear drive sag mill vs gearless drive sag mill
    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: 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 mill itself becomes the rotor of the gearless motor.
  • Preprint 13-050 ceecthefuture
    Preprint 13-050 UPDATES ON GEARED VS GEARLESS DRIVE SOLUTIONS FOR GRINDING MILLS R. Kalra, CITIC-HIC Pty Ltd, Sydney, NSW, Among the many reasons that geared drives on Preprint 13-050 UPDATES ON GEARED VS GEARLESS DRIVE SOLUTIONS FOR GRINDING MILLS R. Kalra, CITIC-HIC Pty Ltd, Sydney, NSW, Among the many reasons that geared drives on large SAG mills are not favoured, is due to not having an efficient variable speed drive interface between the mill vendor and the gearless motor supplier.
  • siemens/mining SIMINE Gearless Mill Drives
    Whether you’re talking about SAG or ball mill, space is a sensitive subject, especially in the concentrator. That’s why we always design our SIMINE MILL Gearless Drives to combine Whether you’re talking about SAG or ball mill, space is a sensitive subject, especially in the concentrator. That’s why we always design our SIMINE MILL Gearless Drives to combine maximum performance with limited space requirements. Suitable foundation and adequate ground conditions Since our solutions have a low motor weight, this notice-
  • Gearless mill drives Mining Weekly

    The sixty rotor poles each weigh about 1,8 t, which gives a total motor mass in excess of 400 t. The rotor poles are mounted on a flange near the feed end of the mill.

  • Grinding mills for mining and minerals processing Metso
    Every mining operation has a unique grinding process. Metso has experience of over 8,000 grinding mills globally, including manufacturing and delivering the largest SAG/AG mills in the world. Our Every mining operation has a unique grinding process. Metso has experience of over 8,000 grinding mills globally, including manufacturing and delivering the largest SAG/AG mills in the world. Our experts welcome the opportunity to assist you with circuit and circuit control design as well as start-up, operation, and optimization of your mill.
  • ringmotor ball mill lenaertstheo
    Gearless Sag Mill Slip Ring Motor Energy Efficiency Of Sag Mill; Sag Mill Jacking Cradle; Difference Between Sag Mill From Ball Mill; Sag Mill Design Ppt slip ring motors for ball mill. slip ring Gearless Sag Mill Slip Ring Motor Energy Efficiency Of Sag Mill; Sag Mill Jacking Cradle; Difference Between Sag Mill From Ball Mill; Sag Mill Design Ppt slip ring motors for ball mill. slip ring motors for ball mill,, Find Complete Details about Yrkk High Voltage Slip Ring Motor For Cement Mill Ball Mill,Slip Ring Motor.
  • gearless mill drives Archives International Mining
    Gearless mill drives (GMDs) are the grinding solution of choice in challenging environments. SAG mill and two 22 MW drives for a pair of 28 ft (8.5 m) ball mills at Aktogay, and three identical Gearless mill drives (GMDs) are the grinding solution of choice in challenging environments. SAG mill and two 22 MW drives for a pair of 28 ft (8.5 m) ball mills at Aktogay, and three identical systems at Bozshakol. Each includes phase and excitation transformers, a ring motor with a local mill control panel, and a containerised electrical
  • ABB to deliver three large gearless mill drives for
    ABB to deliver three large gearless mill drives for Mauritanian gold mine project ring motors and E-house. One 26 megawatt GMD system will be installed for a 40-foot diameter SAG mill, while ABB to deliver three large gearless mill drives for Mauritanian gold mine project ring motors and E-house. One 26 megawatt GMD system will be installed for a 40-foot diameter SAG mill, while two 20.5 megawatt GMD systems will be installed to drive two 27-foot diameter ball mills.
  • Mining Grinding and Processing WEG
    Variable Speed . Single or double pinion driving systems. Designed to drive and control the speed of the medium voltage motors coupled to the SAG/AG, ball and HPGR mills with single or double Variable Speed . Single or double pinion driving systems. Designed to drive and control the speed of the medium voltage motors coupled to the SAG/AG, ball and HPGR mills with single or double pinion, the MVW01 frequency drive uses state of the art technology through a multilevel structure with medium voltage IGBTs, reducing the harmonic currents on the motor to extremely low levels.
  • A Mechatronic Solution Design and Experience with Large
    tive optimization of the mill systems. The engineering complexities increased because the gearless drive could no longer be de-signed according to the stress principles alone but also incorporated tive optimization of the mill systems. The engineering complexities increased because the gearless drive could no longer be de-signed according to the stress principles alone but also incorporated stiffness prin-ciples as well. Stiffness criteria should be defined and exchanged between the motor supplier, the mill manufacturer and civil
  • 2009 Gearless Mill Drives CB&MUA

    marsh.ca marsh Gearless Mill Drives Machinery Risk Solutions Practice 2009 Matt Dugalic P.Eng., MARSH MRSP Risk Consultant, VP Kurt Tischler Dipl.-Ing., Siemens

  • Siemens expands mining portfolio to include gearless drive
    Siemens expands mining portfolio to include gearless drive system for 42-foot SAG mills. Siemens is now able to provide to mining companies a gearless drive system for SAG mills with a tube Siemens expands mining portfolio to include gearless drive system for 42-foot SAG mills. Siemens is now able to provide to mining companies a gearless drive system for SAG mills with a tube diameter of 42 feet. This enables throughput to be almost doubled in comparison with the 38-foot mills