how to use lrs in ball mill

stepping-forward-using-variable-speed-drives-for ... - 911 Metallurgist

obtained using latest technology Variable Speed Drives (VSD). ... machines to the current multi-stage, semi-autogenous (SAG) and ball mill circuits. ..... chosen, with an MV WRIM (wounded rotor induction motor) with an LRS (liquid rheostatic.

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Uneven SAG Mill Drive Power Draw - Grinding & Classification ...

Apr 4, 2017 ... Differences between drives power draw of two drives sag mills. ... Use Add Reply = to Reply/Participate in a Topic/Discussion (most frequent). .... current draw on one motor may well be linked with an increasing mill load (balls / clay ... Since this is a WRIM and LRS set up (no VSD with active load sharing or...

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Updates on geared vs gearless drive solutions for grinding mills

SER drives are now mature and ready for use on 2 X 10MW dual drive mills. Speed ... method of driving SAG mills, Ball mills and other rotating elements. Several ..... Sino Iron – six 2x7.8MW Ball – Fixed HS Asynchronous with LRS. Konkola...

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Medium Voltage VSDs in mill drive applications - E+C Spot On

Two mills typically used are Ball Mills and SAG. Mills which form part of the ... Making use of slipring motors in conjunction with a LRS was in the past one of the...

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

Electrolytic starter (LRS) for slipring motors from 550 to 20,000 kW .... starters or Liquid Resistance Starters (LRS),use mobile electrolytic resistances. ... enough for some specific applications (control of the slip for the ball mills for example).

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Evolution of direct coupled pinion drive technology for grinding mills

Rotor Induction Motor, Dual Pinion Mill Drives, SAG Mill, AG Mill, Ball Mill ... For many grinding mill installations, the use of pinion driven mills is appropriate. ... (WRIM) with liquid rheostat starter (LRS), (ii) WRIM with LRS and slip energy...

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liquid resistance starters - NHP

machines such as; ball and SAG mills, crushers ... liquid resistance starters for use with low and medium ..... with water electrolyte via the LRS drain valve and...

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Milling - Energy intensive and high maintenance - ABB

characteristic and throughput. Ball mills on the other hand, as far as process requirements are ... The key issue to operate a mill in a fix speed mode is the starting. ... The WRIM + LRS system is causing high transient torques during the start-up.

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CR4 - Thread: Suitable Starter for Ball Mill Starting Through ...

kindly suggest for a suitable starter to start a ball mill with 2600 kw, 1000 rpm, 11 ... (1) Generally LRS is used for Cement Ball mill application.

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