Gearless Ring Motor For Sag Mill Principles

  • 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. The motor is fed by a fuse-less cycloconverter that is connected to the MV

  • 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

  • Sentinel: Siemens Gearless Mill Drives YouTube

    19/01/2016· 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

  • Gearless mill drives ABB Group

    The gearless mill drive eliminates ring-gear, pinion, gearbox, coupling, motor shaft and motor bearings, used within a conventional mill drive system. By mounting the rotor poles directly onto the mill, the mill itself becomes the rotor of the gearless motor. Building a track record ABB's experience in optimizing gearless solutions for grinding applications extends over 50 years, making it the

  • 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.

  • Literature Review: Gearless Motor Failures A Mill

    10/09/2014· Literature Review: Gearless Motor Failures A Mill Designer’s Viewpoint admin 10 September 2014 2014, Ball mill, Design, Design Validation, Failure Analysis, Gearless Mill Drives, Grinding Mills, Literature Reviews, Mill Design, Mills, Ring Motor, SAG mill, Stiffness, Strain Gauging, System Analysis, Vibration, Welding

  • INNOVATION NEWS Mills and GMDs ABB Ltd

    Mills and GMDs Maarten van de Vijfeijken* looks at large, larger and the largest units in grinding ore T he gearless motor (also called wrap-around motor or ring motor) is a very large synchronous motor. The poles of the motor are directly installed on a pole flange on the mill shell: this means the mill body becomes the rotor. The stator of the

  • Insurability of Large Gearless Mill Drives (GMDs)

    28/09/2014· Introduction. We have written on risk associated with large ring motors in gearless mill drives previously [1, 2, 3]. In [1], we observed that ABB and Polysius were far too confident in 2001 when they claimed that 42 and 44 ft diameter mills and ring motors posed only manageable risks and that a 44 ft mill and GMD design was ready and waiting for a purchaser [4].

  • Ring-geared mill drives Grinding ABB

    If in the past single pinion mills were enough to process all material, today dual pinion or gearless driven mills are necessary. Not only the mill equipment was adapted to exceed its technical and performance limits. Also, the drive solution experienced continuous developments, influenced by the newest trends, that permit reaching new grinding

  • ABB ring geared mill drives YouTube

    5/06/2013· ABB continuously extends technical and performance frontiers of ring-geared mill drive technology to fit site requirements. We provide optimized mill drive solutions for all types of ring

  • INNOVATION NEWS Mills and GMDs ABB Ltd

    Mills and GMDs Maarten van de Vijfeijken* looks at large, larger and the largest units in grinding ore T he gearless motor (also called wrap-around motor or ring motor) is a very large synchronous motor. The poles of the motor are directly installed on a pole flange on the mill shell: this means the mill body becomes the rotor. The stator of the

  • Insurability of Large Gearless Mill Drives (GMDs)

    28/09/2014· Introduction. We have written on risk associated with large ring motors in gearless mill drives previously [1, 2, 3]. In [1], we observed that ABB and Polysius were far too confident in 2001 when they claimed that 42 and 44 ft diameter mills and ring motors posed only manageable risks and that a 44 ft mill and GMD design was ready and waiting for a purchaser [4].

  • 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)

  • Ring gear drives huge grinding mill Machine Design

    By this summer, a grinding mill that is bigger around than a Boeing 747 will turn chunks of copper ore into gravel-sized bits for smelting and refining. The largest ring gear will make it happen

  • Commissioning Variable Speed SAG Mill Gearless Drive

    Ball Mills as secondary grinding stage. The Electric Drive (SIEMENS) consists a 11.000 HP synchronous motor of variable speed. General Description of the Drive The SAG Mill Drive is mainly formed by a 11,000 HP. Ring Type Synchronous Motor of double winding, fed by two Three–Phased Cycloconverters. The rotor has salient poles without dumping

  • china ball mill with hydraulic gearless drive

    Gearless mill drives Grinding ABB. china ball mill with hydraulic gearless drive. mar following the sag mill will be two hp ball mills, each one ft and a ring motor gearless drive either of which wraps around the mill.

  • 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.

  • Gearless mill drive system in iron ore ­processing

    ABB was recently contracted to supply gearless mill drive (GMD) systems for two 38 foot semiautogenous grinding (SAG) mills at the Serra Azul iron ore mine in Brazil. The Serra Azul mine unit, owned by MMX Mineração e ­Metálicos, an EBX Group company, is located in the iron quadrangle of Minas Gerais, next to Belo Horizonte the heart of

  • 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 stiffness prin-ciples as well. Stiffness criteria should be defined and exchanged between the motor supplier, the mill manufacturer and civil

  • Preprint 13-050 ceecthefuture

    Presently the gearless drive is more costly than the complete mechanical portion (mill rotating element and accessories supplied by the mill manufacturers) and hence the customer/consultant needs to have two parties to deal with from the start of any project. There is an interface between the mill vendor and the gearless motor supplier.

  • Gearless mill drive order in Kazakhstan Mineral Processing

    ABB’s scope of supply consists of one 28 megawatt GMD for a 40-foot semiautogenous (SAG) mill and two 22 megawatt GMDs for two 28-foot ball mills. Each GMD system includes phase and excitation transformers, a ring motor with its associated local mill control panel, a containerized electrical house (E-house) including cycloconverter, advanced

  • gearless ring motor for sag mill principles Grinding

    » gearless sag mill slip ring motor » what is the difference between a sag mill and ball mill » ball mill and gearless ring motor for sag mill principles; » Learn More. Gearless Drives Siemens. Utah, SAG mill and a 11,200 kW gearless drive for the El Teniente, Chile, SAG mill. with gearless ring motors that have been in

  • Giant ABB drive systems boost mining productivity

    With no moving parts between the motor and the drum, a gearless mill is also extremely strong and can reliably process vast quantities of ore. ABB is the world’s leading supplier of gearless mill drives with more than 70 installed and ordered units worldwide. Sag mill with ABB ring motor

  • push button operation on gearless mill drives and motors

    Gearless Drive Mills And Crushers aquacultur. gearless drive mills and crushers and mw aitc. gearless ring motor for sag mill principles. Custom Crushers And,Siemens expands mining portfolio to include ABB's Gearless mill drive system is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills. geared vs gearless drive

  • Current Issues on High-Power Cycloconverter fed Gearless

    use of big mill grinding circuits, where large power gearless motor drives with cycloconverters in the range around 20 MW are being applied for semiautogenous (SAG) mills and re-cently, ball mills are also being considered. This work addresses some current issues involving design and application of high-power drives employed in SAG grind-

  • Published in: international symposium on industrial electronics · 2003Authors: J Pontt · J Rodriguez · W Valderrama · G Sepulveda · P Chavez · B CuitinoAffiliation: Valparaiso UniversityAbout: Industrial engineering · Process control · Knowledge base · Power quality · Ball mill
  • Gearless Drive Mills And Crushers udenairport

    gearless sag mill slip ring motor ofspescaracolli. gearless ring motor for sag mill principles slip ring induction motor for sag mills » gearless sag mill slip ring motor » what is the difference between a sag mill and ball mill » ball mill and gearless know more. get price>> gearless drive mills and crushers and mw.

  • 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

  • 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 two 20.5 megawatt GMD systems will be installed to drive two 27-foot diameter ball mills. In addition, Kinross ordered the new ABB GAP-Watch TM for each system. GAP-Watch TM is a unique rotating air

  • ABB to deliver three large gearless mill drives for

    ABB’s scope of supply consists of three complete GMD systems including transformers, ring motors and E-house. One 26 MW GMD system will be installed for a 40′ diameter SAG mill, while two 20.5 MW GMD systems will be installed to drive two 27′ diameter ball mills. In addition, Kinross ordered the new ABB GAP-Watch TM for each system. GAP

  • 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.

  • We can help build your production line!

    Design a unique production line based on your area, production, and feed size.

    Get it now