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    Jun 28, 2019· 1.6 x Full load torque, very typical for a ball mill or sag mill as Chris mentioned. The liquid starter simply adds resistance in the rotor during starting toAppliion of Liquid Resistance Starter

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    type of technology that has had and will continue to have, major opportunity cost SAG mill, Ball mill, Locked charge, drop charge, frozen charge, Liquid measuring the electrical currents between the motor rotor and the liquid resistance starter. . like to thank everyone who has made a contribution to this work, from its. Get Price

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    Liquid Resistant Starters On Ball Mills hang-on.co.za. Mill motor, 2.9MW. Is the liquid starter resistance variable during each case of . very typical for a ball mill or sag mill. LIQUID RESISTANCE STARTERS nhp.au. Fixed electrode liquid resistance starters m350 sTArTer for use with low and medium voltage wound rotor motors from 200 kW to 750

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    Locked charge starts and your grinding mill / 1 Case study: Stockton Coal Mine / 5 SAG and ball mills with grate mill starter system could include a Liquid Resistor Soft Starter (LRS) or Variable Frequency Drive (VFD), or it could be a clutch. Regardless

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    SAG mill, Ball mill, Locked charge, drop charge, frozen charge, Liquid the electrical currents between the motor rotor and the liquid resistance starter. . Under these crash stop conditions, the mill stops without prior controlled grind out of. Get Price

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    wound rotor motor and ball mill starting curve. ball mill liquid rotor starter greenrevolutionorg Preprint 07024421 Кб Thus, the main fixed speed drives for SAG and ball mills are slip ring motors (also called wound rotor induction motor) and synchronous motorsThese motors are started with a starting resistor (oil starters with stepping resistors or liquid starters)

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    liquid starter for ball mill tattooerikdenhaag. 20180817· More Liquid Starter Ball Mill How Does It Work KQR series liquid resistor starter is a new generator with Toshiba Medium Voltage Ball Mill Starter liquid start More Autogenous mills, semi autogenous mills and ball ball mills 4 *Motor power at 35% ball charge Get Price liquid starter for grinding mill motor limestone mining crusher

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    mill if this reaches a dangerous angle. Figure 4 is a photo of the LCPR panel at the Tarkwa SAG mill during commissioning. The LCPR panel is mounted against the Liquid Resistance Starter control cabinet, to facilitate easy connection to the DC CTs depicted in Figure 5. Figure 4 LCPR panel Figure 5 DC CTs used for rotor current measurement

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    Mill motor, 2.9MW, 6.3KV, rotor current: 775A, rotor voltage: 2770V In this case sometimes we recorded 775A as starting current and in other times we recorded 400 A for rotor current during start and for stator the current is variable, in some case it was 85 A, and in other was larger than 400a. This motor starts with liquid starter. Questions: what is your idea about differentiation?

  • Drive Solutions for the Global Mining Industry

    drive application is a dual-pinion SAG mill driven by two 5,000 kW wound rotor induction motors (WRIM). Two TMdrive-10SPRs control motor speed by recovering rotor current and returning the power to the utility supply. Confi gured in a twin motor arrangement, the motors share load in the tandem mill. The Customer Need

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    SAG mill circuit optimisation at Ernest Henry Mining 10.4m x 5.1m SAG mill powered by two 5.5 MW drives, in closed circuit with a 3.7 m x 7.3m .. in capital cost between the various options was insignificant. To reduce . using the liquid resistance starters and an electrolyte cooling system.

  • Starter of SAG Mills with rotor resistance

    Sep 17, 2013· Forum » General Discussion » Starter of SAG Mills with rotor resistance. Topics: Starter of 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 I expect that this type of drive would be the most common large mill variable speed mill drive in the

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    Project: One SAG Mill and 3 Ball Mill Drive Systems Capacity: SAG Mill 4583 t/h Ball Mills 4583 t/h Consultant: Bechtel, Chile Liquid Starter Efficient Compatible. Goldstrike Barrick Goldstrike USA Project: Two Ball Mill Drive Systems Capacity: 512 t/h Consultant: Hatch Associate, Canada Mill Builder: Polysius, USA Mill Size: 19 feet/5,8 m

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    liquid starter for ball mill tattooerikdenhaag. 20180817· More Liquid Starter Ball Mill How Does It Work KQR series liquid resistor starter is a new generator with Toshiba Medium Voltage Ball Mill Starter liquid start More Autogenous mills, semi autogenous mills and ball ball mills 4 *Motor power at 35% ball charge Get Price liquid starter for grinding mill motor limestone

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    Single Pinion Mills: WRIM with Brush lifting device + Liquid Rheostat Starter United Taconite LLC Minnesota USA Dual Pinion SAG Mill 2x LSS Motor + Airclutch Load Sharing System Grinding & Concentration Mill Drive Systems WEG’s experience with Mill Drive Systems brings mine operations the most reliable and efficient

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    ABB drives in mining 11 Drives in action ABB variable speed drive increases output and performance of SAG mill Agnico-Eagle’s LaRonde mine in Canada produces about 260,000 ounces (7370 kg) of gold annually. In order to run the motor and the SAG mill at the required load output the existing drive was replaced with a medium voltage drive from

  • 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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    EPM starter with heat exchanger: An EPM starter equipped with a heat exchanger is suitable for applications requiring: high starting cadenza speed variation or permanent sliding of the engine An exchanging system can be mounted on any EPM started, with the addition of a regulation servo-motor and a heat exchanger.

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  • wound motor with liquid resistor starter for mill

    wound rotor motor and ball mill starting curve. ball mill liquid rotor starter greenrevolutionorg Preprint 07024421 Кб Thus, the main fixed speed drives for SAG and ball mills are slip ring motors (also called wound rotor induction motor) and synchronous motorsThese motors are started with a starting resistor (oil starters with stepping resistors or liquid starters)

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    EPMA Liquid . Resistance Starter. 2. Capability. Testing & Commissioning. Ball and SAG mills and cyclone feed pump . liquid to liquid or liquid to air Mill start program Conveyor start/stop program Variable speed control Slip energy

  • Starter of SAG Mills with rotor resistance

    Sep 17, 2013· Forum » General Discussion » Starter of SAG Mills with rotor resistance. Topics: Starter of 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 I expect that this type of drive would be the most common large mill variable speed mill drive in the

  • Gearless Mill Drives ABB Ltd

    Project: One SAG Mill and 3 Ball Mill Drive Systems Capacity: SAG Mill 4583 t/h Ball Mills 4583 t/h Consultant: Bechtel, Chile Liquid Starter Efficient Compatible. Goldstrike Barrick Goldstrike USA Project: Two Ball Mill Drive Systems Capacity: 512 t/h Consultant: Hatch Associate, Canada Mill Builder: Polysius, USA Mill Size: 19 feet/5,8 m

  • EPMA Liquid Resistance Starter CSE Uniserve

    EPMA Liquid . Resistance Starter. 2. Capability. Testing & Commissioning. Ball and SAG mills and cyclone feed pump . liquid to liquid or liquid to air Mill start program Conveyor start/stop program Variable speed control Slip energy recovery drive ready Electrolyte Conductivity

  • Motors Automation Energy Transmission & Distribution

    Single Pinion Mills: WRIM with Brush lifting device + Liquid Rheostat Starter United Taconite LLC Minnesota USA Dual Pinion SAG Mill 2x LSS Motor + Airclutch Load Sharing System Grinding & Concentration Mill Drive Systems WEG’s experience with Mill Drive Systems brings mine operations the most reliable and efficient

  • Liquid Resistant Starters On Ball Mills

    liquid starter for ball mill. liquid rotor starter for ball mill liquid starter ball mill how does it work ecoopeu KQR series liquid resistor starter is a new as ball mill crusher elevator compressor fan starters 2 Small starting current which is less 13 times of rated current 3 It can start continuously for 510 tim 4 gram and working . Read More

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    Mill drive example An example of slip power recovery is the wound rotor motor shown below, one of two for powering a new 10,000 kW SAG mill in Australia as shown in Figure 3. This installation includes: • Two 5000kW six-pole WRIMs with 11,000v stators • A combining gear box driving the mill • One 10,000kW liquid resistance starter (rheostat)

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    Sustainable Optimisation of the Bell Creek SAG Mill. decreases due to the onset of a classical overload. In the case of,as the mill is groundFigure 4-out, the bearing pressure drops significantly, however the power draw increases (this is a typical response for a SAG mill coming out of a classical overload).

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  • BALL MILL DRIVE MOTOR CHOICES artec-machine

    The mill used for this comparison is a 4.4-meter diameter by 13.6 meter long ball mill with a 5000 HP drive motor. It is designed for approximately 90 s.ton per hour. This type two-compartment mill is a state- of-the-art shell supported cement finish mill. The torque and time requirements of the mill with the ball

  • Electrolytic starter (LRS) for high power slipring motors

    EPM starter with heat exchanger: An EPM starter equipped with a heat exchanger is suitable for applications requiring: high starting cadenza speed variation or permanent sliding of the engine An exchanging system can be mounted on any EPM started, with the addition of a regulation servo-motor and a heat exchanger.

  • ABB drives in mining Medium voltage drives for reduced

    ABB drives in mining 11 Drives in action ABB variable speed drive increases output and performance of SAG mill Agnico-Eagle’s LaRonde mine in Canada produces about 260,000 ounces (7370 kg) of gold annually. In order to run the motor and the SAG mill at the required load output the existing drive was replaced with a medium voltage drive from

  • Engineering and Installation of Medium Voltage Drive for

    The end user is setting up a new Greenfield mine in order to produce gold. The order for Ingeteam comprises the supply of medium voltage frequency converter, step down transformer and induction motor for the SAG mill, and Liquid Rheostat Starter (LRS) and slip ring motor for the ball mill.

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    where a 600kW ball mill motor is started by use of a secondary liquid resistance starter. This is provided as a comparison to case study A. II Background A. Case Study A ASU Plant Capacitor Starting The LNG plant system under discussion is an existing system without connection to the grid, and runs under its own gas generated power and had

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    Secondary Liquid Resistance Starters. Toshiba Australia and New Zealand Toshiba Worldwide: About. About TIC. TIC's 40 year Anniversary 2018. Philosophy. Global Network. Corporate Structure. Moving Electrode Non Linear type Secondary Liquid Resistance Starter; Contact us for more information.