Abb’s gmd is the most powerful mill drive system in the market to power semiautogenous sag ball and autogenous ag mills this ’workhorse’ for grinding operations combines a robust service friendly and fit for purpose design to provide highest throughput reliabilityselection of comminution circuits for improved efficiency• single
Get PriceAluminium stair for support ball mill and sag mil eand worlds largest sag mill gearless drive and failure analysis of ball mill gears page 2 of 6 some of the largest in the world including the collahuasi sag and ball mills 40 ft and 26 ft respectively and the 40 ft ag mill at cape
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Get PriceCadia girth gear failuressep 22 2014 this is an update of work presented at the sag 2001 conference on the cadia gears both gears and pinions on twin ball mills failed almost simultaneously our 2001 paper showed that the location of the failures is explained by the shape of the girth gear
Get PriceFigure 7 – abb synchronous motor on ball mill 1 the drive requirements for the copper mountain mills are as follows rated power 2 x 6340 kw 2 x 8500 hp sag mill rated motor speed 204 rpm max motor speed 214 rpm ball mill rated motor speed 195 rpm
Get PriceFollowing the sag mill will be two 9000hp ball mills each one 20ft in diam and 3312ft long that do the finish grinding this mill uses a ringmotor drive figure 5 the sag mill is
Get PriceGear drive sag mill vs gearless drive sag mill protable plant sag mill drive dijualpostcatcher gearless ring motor for sag mill principles sag mill dual pinion geared drive gear drive sag mill vs gearless drive sag mill gold ore crusher 20 ton ball mill untuk dijual dijual mesin grinding fluid energy ball mill is a type of grinding mill purposed similarly
Get PriceLg a mill power equation for sag mills minerals and metallurgical processing feb 1990 pp5762 gross power no load power net power drawn by the charge 813 the net power is calculated from net power kd25l e c watts 814 in equation 814 d is the diameter inside the mill liners and le is the effective length of the mill including the
Get PriceMw it has been the industry standard for sag mills above 13 mw capacity however pinion systems to 8 mw per pinion and dual motor systems with quadruple pinions extend the range of gear driven mills to a theoretical limit of 32 mw the ernest henry sag mill 11 mw is currently the largest twin pinion single drive mill installed in
Get PriceOct 25 2012 with a gearless drive on a sag or ball mill you’ve polysius grinding mills can be driven via ring gear pinion 6 mill drive systems sag mill gear failure grinding media cost and sag mill liner life
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Get PriceSep 10 2014 this is at odds with the observation that the specific failures discussed in 1 have not been observed in small diameter machines such as those used to drive ball mills svalbonas’ paper paints the stateoftheart in ring motor design as being in a parlous and undeveloped state in comparison with that of
Get PriceThe latter is the more common scenario and most failures of sag or ag grinding circuits can different styles of drives including wrap around motors are now used so the dry grinding ball mill drive motor failures fls ball mill operation get price high pressure grinding rolls—applications for the platinum saimm benefits
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Get Price• 22 mw gmd for 28’ ball mill • 28 mw gmd for a 40 sag mill • 28 mw gmd for 42 sag mill whether it is size or an installation at the highest altitude 4600 masl abb’s gmds are well positioned to contribute to the building of larger and ever more powerful mills — leading the gearless mill drive
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