ring motor sag mill

  • SAG mills (semi-autogenous grinding mills)

    SAG mills (semi-autogenous grinding 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 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. Get Price
  • AYCA Services SAG mill Ring MotorsA CA

    AYCA Services SAG mill Ring MotorsA CA

    SAG mill Ring Motors Ball mill Ring Motors Frequency Converters High current rectifiers for EW tank houses Medium and high power synchronous motors » Routine maintenance minor and major shutdowns in SAG GMD drives. » Dielectric recovery through the application of "Cryogenic Cleaning" in electric machines.

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  • SAG Milling in Australia -Revised Submission

    SAG Milling in Australia -Revised Submission

    Developments in SAG Mill Design and Operation Over the last few years SAG mill manufacturing technology has advanced rapidly. The bounds of mill size have been pushed from two directions. Firstly the advent of ring motors has removed the constraint applied by the power that a

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  • BALL MILL DRIVE MOTOR CHOICESartec-machine

    BALL MILL DRIVE MOTOR CHOICESartec-machine

    The time has come to re-think our approach to mill drive motors because of the growth in size of newer ball mills the starting torque restrictions of some of the newer mill drive configurations and the softness of some utility services. This paper looks at the serviceability and economics of five different mill motor

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  • Industrial Solutions Autogenous

    Industrial Solutions Autogenous

    mills is the direct drive. Ring motor drive The ring motor features noncontact transmission of the driving torque to the mill shell by means of magnetic forces. As this produces no component wear this type of drive provides high availability and long service life. Another significant aspect is

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  • SVG MotorsNew and Used Chrysler Chevy Dodge Jeep

    SVG MotorsNew and Used Chrysler Chevy Dodge Jeep

    Visit SVG Motors for a variety of new and used cars by Cadillac Chevy Chrysler Jeep GMC Dodge Toyota Buick and RAM in the Dayton area. Our Chevy Chrysler Jeep GMC Buick and RAM dealership serving Dayton Greenville Washington Court House Urbana Eaton and Beavercreek OH is ready to assist you

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  • Used Mining  Processing EquipmentGrinding Mills

    Used Mining Processing EquipmentGrinding Mills

    3 000-5 000 TPD Iron Ore Process Plant 3 000 HP FLS Ball Mill VTM 1500 15 5-deck Sizers 6 SLon Outotec Magnetic Separators Pumps Northstar Disc Filter and Much More

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  • GMD infographic finalABB Group

    GMD infographic finalABB 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

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  • Mill (grinding)Wikipedia

    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.

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  • Problem with Brushes chipping on large SAG Mill Motor 2.3

    Problem with Brushes chipping on large SAG Mill Motor 2.3

    Jun 11 2010 · We have a 2.3MW slip ring motor WRIM on the SAG Mill in the process plant. The issue we have is that the leading edge on the brushes on only ONE of the rings is chipping (7 brushes per ring). We have had this issue for 6/9 mths now mill has been running 10 years with no problem.

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  • Outotec® MH Series Grinding MillsOutotec

    Outotec® MH Series Grinding MillsOutotec

    Range of SAG ball and rod mills for capacities under 3.1 MW. Mill control system. The optional Outotec mill control system features the latest in state-of-the-art technology and is the preferred control option for all Outotec grinding mills. It comprises a local control panel with a

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  • Rotor Millsfast  easy sample preparationRetsch

    Rotor Millsfast easy sample preparationRetsch

    Rotor Mills The rotor mill series includes Ultra Centrifugal Mills Rotor Beater Mills and Cross Beater Mills. Depending on the particular instrument they are suitable for the preliminary and fine size reduction of soft fibrous and also hard materials.

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  • MillingEnergy intensive and high maintenance

    MillingEnergy intensive and high maintenance

    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 Presently SAG mills are mainly driven with variable speed drives allowing the operator to react easily to the changes in ore

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  • Used Sag Mills for sale. Hardinge equipment  more Machinio

    Used Sag Mills for sale. Hardinge equipment more Machinio

    21′ X 11′ HARDINGE SAG MILL. Manufacturer Hardinge 21′ x 11′ Hardinge SAG mill with 2875 DC slip ring motor inching drive lubrication located in South America. Equip yourself with the gold standard.

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  • Electrolytic starter (LRS) for high power slipring motors

    Electrolytic starter (LRS) for high power slipring motors

    The level variation of electrolyte is pretty slow which does not enable resistance to vary quickly enough for some specific applications (control of the slip for the ball mills for example). 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

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  • Electrolytic starter (LRS) for high power slipring motors

    Electrolytic starter (LRS) for high power slipring motors

    The level variation of electrolyte is pretty slow which does not enable resistance to vary quickly enough for some specific applications (control of the slip for the ball mills for example). 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

    Get Price
  • Why do we use carbon brushes in a slip ring motor Quora

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

    Jun 13 2019 · 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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  • Design and dynamic behavior of large Ring Motors for

    Design and dynamic behavior of large Ring Motors for

    Ring Motors vary the speed of the mill by changing the sta-tor frequency. A cycloconverter provides variable frequency for start stop and speed variation during operation. Figure 1 Ring Motor of the 38 SAG-Mill of Rio Paracatú Mineraçao Brazil 3 Design Verification To assure reliability of operation the mechanical design must be verified.

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  • 21 x 11 Hardinge SAG MillNelson Machinery  Equipment

    21 x 11 Hardinge SAG MillNelson Machinery Equipment

    21 x 11 Hardinge SAG mill with 2875 DC slip ring motor inching drive lubrication located in South America. Equip yourself with the gold standard. 21 x 11 Hardinge SAG mill with 2875 DC slip ring motor inching drive lubrication located in South America. Equip yourself with the gold standard.

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  • Gearless Drivesstatic.dc.siemens

    Gearless Drivesstatic.dc.siemens

    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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  • SAG mills (semi-autogenous grinding mills)

    SAG mills (semi-autogenous grinding 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.

    Get Price
  • Vibration Sag Mill Motor NDE Bearing AMP Maintenance Forums

    Vibration Sag Mill Motor NDE Bearing AMP Maintenance Forums

    Vibration Sag Mill Motor NDE Bearing Vibration Sag Mill Motor NDE Bearing. robbie60 Member. 7/28/155 28 PM. At our mine we have an issue with vibration at the Sag Motor NDE bearing. The Vibration Sag Mill Motor NDE Bearing Vibration Sag Mill Motor NDE Bearing. robbie60 Member. 7/28/155 28 PM. At our mine we have an issue with vibration at the Sag Motor NDE bearing. The bearing is a journal white metal bearing. The motor has been running for about 14 months now. The vibration at the NDE bearing was around 2mm/sec.Get Price
  • Electrolytic starter (LRS) for high power slipring motors

    Electrolytic starter (LRS) for high power slipring motors

    The level variation of electrolyte is pretty slow which does not enable resistance to vary quickly enough for some specific applications (control of the slip for the ball mills for example). 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

    Get Price
  • What is an inching drive Motion Control Tips

    What is an inching drive Motion Control Tips

    May 02 2018 · In addition to the motor gearbox and coupling most inching drive systems incorporate safety features such as a brake or backstop to prevent the drive from rotating In addition to the motor gearbox and coupling most inching drive systems incorporate safety features such as a brake or backstop to prevent the drive from rotating when power is removed and to keep the equipment from rotating if it s stopped in an unbalanced position. Get Price
  • MiningGrinding and Processing WEG

    MiningGrinding 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 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.

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  • Selecting Inching Drives for Mill and Kiln Applications

    Selecting Inching Drives for Mill and Kiln Applications

    Selecting Inching Drives for Mill and Kiln Applications Glen Cahala Frank C Uherek Principal EngineerGear Engineering Software Development Abstract The inching drive also known as a barring or auxiliary drive is an important component of any mill or kiln installation. It is used for maintenance and inspection purposes as

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  • rotary ball mill motors maintenance

    rotary ball mill motors maintenance

    Ball mill preventive maintenance SAG mill AG mill. Oct 18 2016Starting a 6kV 3Ph 2 200 kW 1 000 rpm slip-ring motor for a cement ball mill Duration 3 51. Yves Mamin 387 998 views. get price. Maintenance checklist Motors. Maintenance checklist Motors Poor maintenance can affect electric motor efficiency. This checklist summarises simple

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  • Current Issues on High-Power Cycloconverterfed Gearless

    Current Issues on High-Power Cycloconverterfed 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-

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  • Ok Tedi plans for long term with SAG mill upgrades by

    Ok Tedi plans for long term with SAG mill upgrades by

    For SAG 2 Siemens supplies two 8 pole high speed induction motors to replace the existing slip-ring motors eliminating all brush or slip-ring related outages and maintenance activities. The four identical variable speed drives (VSD) operating all four mill motors are Sinamics Perfect Harmony GH180 units.

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  • Vibration Sag Mill Motor NDE Bearing AMP Maintenance Forums

    Vibration Sag Mill Motor NDE Bearing AMP Maintenance Forums

    Vibration Sag Mill Motor NDE Bearing Vibration Sag Mill Motor NDE Bearing. robbie60 Member. 7/28/155 28 PM. At our mine we have an issue with vibration at the Sag Motor NDE bearing. The bearing is a journal white metal bearing. The motor has been running for about 14 months now. The vibration at the NDE bearing was around 2mm/sec.

    Get Price
  • Mill (grinding)Wikipedia

    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.

    Get Price
  • Phoenix Big mill and latest tech keep long-lived mine

    Phoenix Big mill and latest tech keep long-lived mine

    Jun 06 2019 · "The motor on our SAG mill is the fascinating part for me " Hope said. a big ring gear and pinions. A mill of this size would take two motors and pinions one on each side " Tucker said.

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  • ABB to deliver three large gearless mill drives for

    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 megawatt GMD system will be installed for a 40-foot diameter SAG mill ABB s scope of supply consists of three complete GMD systems including transformers 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. Get Price
  • ABB successfully commissions world s largest ring-geared

    ABB successfully commissions world s largest ring-geared

    ABB s scope of supply included four dual pinion low-speed mill drive systems for two semiautogenous (SAG) and two ball mills each consisting of two synchronous motors converter transformers and ACS6000 frequency converters including active rectifier units that allow the mill drives to achieve a power factor of 0.90 leading.

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  • Advantages of SER drives for SAG mills GoHz

    Advantages of SER drives for SAG mills GoHz

    Dec 19 2014 · Advantages of SER drives for SAG mills. Friday December 19 2014 So for a fixed torque and higher speed the power obtained from the motor is higher than the Advantages of SER drives for SAG mills. Friday December 19 2014 So for a fixed torque and higher speed the power obtained from the motor is higher than the motor nameplate rating. Brush/slip ring maintenance is one issue. However when the brushes are specified correctly for the load the wear is manageable. Get Price
  • Selecting Inching Drives for Mill and Kiln Applications

    Selecting Inching Drives for Mill and Kiln Applications

    Selecting Inching Drives for Mill and Kiln Applications Glen Cahala Frank C Uherek Principal EngineerGear Engineering Software Development Abstract The inching drive also known as a Selecting Inching Drives for Mill and Kiln Applications Glen Cahala Frank C Uherek Principal EngineerGear Engineering Software Development Abstract The inching drive also known as a barring or auxiliary drive is an important component of any mill or kiln installation. It is used for maintenance and inspection purposes as Get Price

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