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Machine Tools » Grinding machines » UNUSED FL 36' x 17' (11m x 5.2m) SAG Mill with 13,500 kW (18,355 HP) ABB Wrap Around Drive in Oroville, CA, USA

أكمل القراءةAutogenous and Semiautogenous mills, of the work done by a ball mill, can be offered for AG/SAG grinding mill as dual pinion drives with power deliver of. More Info. how does the pinion drive the crusher. Gearless Drive AG Mills and Ø79m x 136m 2x8 MW Twin Pinion Drive Ball Mills.

أكمل القراءةBy mill we refer to Ball Mills, Rod Mills and SAG Mills. Anything gear and pinion really. The discharge end of the mill; For the operator this only becomes a problem should the bolts that hold the liners in begin to leak water and ground rock. This combination is called SLURRY. If this slurry gets onto the face of the bull gear it will act like ...

أكمل القراءةFigure 3: Dual pinion ball mill with 6500 kW Low Speed Squirrel Cage Induction motors using VFC Figure 4: Two SAG Mills 24MW each and Two Ball Mills 16.4 MW each with Gearless Mill Drives For larger applications the well-proven Gearless Mill Drive (GMD) technology has …

أكمل القراءةThe SAG mills are fitted with a dual pinion drive system and are driven by a variable-speed drive comprised of a SER hyper-synchronous drive. The SAG mills are 11 m (36') dia, 7.3 m EGL (26.5'). Each SAG mill is driven by two 8 MW motors.

أكمل القراءةDual Pinion Sag Mills Coal Crushercoal Millcoal Crushers. DUAL PINION MILL DRIVES The SAG and the two ball mills are gear driven and Copper Mountain selected the sophisticated low speed dual pinion mill drives from ABB to. Get Price; Ball Mill 40 Poles Motor Drawing Coal Surface Mining Samac.

أكمل القراءةFeed to the SAG mills is via a rock-box type feed chute on a cart. The mills discharge on to trommel screens with a bucket wheel to remove the oversize.The ball mills are 22' x 36.5' (36' EGL) with 12,500 HP drives. The drive arrangements are dual pinion through pneumatic clutches. The fixed speed mills are driven by low speed synchronous ...

أكمل القراءةAccording to ABB, the upgrades to Vale's existing Clarabelle dual pinion semi-autogenous (SAG) mill will allow it to reduce the size of the ore at …

أكمل القراءةThese mills are typically powered using electricity and depending on the required power have different configurations such as central drive, single pinion, dual pinion and gearless mechanical set-up. AG and SAG mills are extensively used in the mining industry for extracting minerals such as metals, oil shale, limestone, rock salt, coal ...

أكمل القراءةMill load sharing – Maintains equal torques on dual pinion mills throughout the whole speed range. Controlled rollback – Prevents backlash and reduces downtime. Mill power ride through – Keeps the mill operating even under voltage dips. Over-duty cycle – Avoids unexpected downtime if the mill …

أكمل القراءةThere are a number of mills in the cement industry in Europe, which have operated for more than three years with this type of drive. Reversible rotation is often used to obtain balanced wear on mill liners and lifters, to reduce the number of mill shutdowns. This feature can easily be incorporated into dual pinion or gearless drives.

أكمل القراءةdesign mill speed, and the maximum design ball charge volume (Barratt, 1989). For single pinion and dual pinion drives, with 21 MW now a distinct possibility, the probability of pinion changes to a higher mill speed should always be considered when set-ting …

أكمل القراءةGears And Pinion For Ball Mill Ball mill pinion alignment pdf riskmark from common ball mills there is a second type of ball ball mill alignment pdf zenith grinding mills and their dual pinion mill how to align ball mill pinion to drive motor sag mill ball mill ring gear dual pinion drive systems variable speed introduction alignment . Get Price

أكمل القراءةInventory ID: 6C-HM03. UNUSED FL 36' x 24' (11m x 7.3m) Dual Pinion SAG Mill with 2 ABB 9,000 kW (12,069 HP) Motors for Total Power of 18,000 kW (24,138 HP)

أكمل القراءةFFE gives the mill details thus: 8.23 metres inside shell diameter; 12.19 metres effective grinding length; 12.8 metres between flanges; and dual 7,000 motors. That makes it the largest low-aspect, dual-pinion gear-driven mill ever to be designed and built. The new mill has an annual throughput of 4.2 million tons of ore.

أكمل القراءةSAG mills semi autogenous grinding mills . We are essentially providing up to twice the power transmission of a conventional dual pinion drive 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

أكمل القراءةAnd whether the total pinion energy (SAG plus ball mill) was sorted by increasing SAG, or by increasing total pinion energy, the result was the same. Taking design numbers from this analysis shows that to grind to a T80 of 1.7mm (from 152mm F80) in a SAG mill will require 29.5 kWh/t in the SAG mill. When ball mill grinding is added,

أكمل القراءةWe are essentially providing up to twice the power transmission of a conventional dual pinion drive. Gearless mill drive (GMD) technology has further expanded the use of large SAG milling allowing Outotec to produce the world's largest SAG mill of 42' in diameter drawing power at 28 MW.

أكمل القراءةdesigns at the moment with dual pinion mills up to 22,000 kW and dual girth gear mills up to 34,000 kW. We current-ly have an order for a mine in North America for a ball mill gear with a with a 9,000 kW single pinion drive." While Fritz doesn't know what gear sizes the competition is supplying to the mining market, he does note that

أكمل القراءةMW). 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 Australia.

أكمل القراءةWEG successfully tests dual-pinion ball mill drive. The products are part of an important order for electric motor drives for eighteen ball mills and semi-autogenous grinding (SAG) mills with dual and single pinions. Autogenous grinding means that the mining ore essentially grinds itself.

أكمل القراءةUnlike semiautogenous (SAG) mills that operate with adjustable frequency drives, the ball mills work at a fixed speed . Current research mainly focuses on the power draw model. ... "An electrical impact study between variable speed dual pinion mills and gearless mill drives," in Proceedings of the 51st Annual Meeting on IEEE Industry ...

أكمل القراءةABB supplied three low speed dual pinion mill drive systems for the startup of a new semiautogenous (SAG) mill and two ball mills. August 16, 2011 - ABB completed commissioning the low speed dual pinion mill drive and control systems at the newly reopened Copper Mountain super pit mine in British Columbia, Canada.

أكمل القراءةABB has commissioned an upgrade to Vale's existing Clarabelle dual pinion semi-autogenous (SAG) mill (Fig. 1). The mill is used to reduce the size of the ore at the company's nickel and copper mines in the Sudbury area, Ontario. The project was …

أكمل القراءةAn electrical impact study between variable speed dual pinion mills and gearless mill drives Abstract: Conventional mining process circuits use both Semi-Autogenous Grinding (SAG) and Ball mills. It is very common that the SAG mills are operated with adjustable frequency drives (AFDs) and the Ball mills are operated at fixed speed [1].

أكمل القراءةAll parameters above are good for a 22.5MW to 24MW dual pinion SAG mill drive. Changes to AGMA standard have revitalised the large gear cutting industry and soon a machine shop in Holland will be able to fabricate gears of the following parameters: 20 meters in diameter = 65.6 feet 1.5 meters in face width 400 tonnes of machined weight.

أكمل القراءةA SAG mill requirement might be 225-250% torque based on Full Load Motor Torque (FLMT). This is the amount of torque the drive motor can produce on a temporary basis during start up. ... The clutch's primary role on the dual-pinion, direct-drive geared mill is to provide smooth starts during mill startup. When the mill is running, the clutch ...

أكمل القراءةThe grinding process with one 34' x 20' SAG mill and two 24' x 39.5' ball mills will be briefly discussed. All three mills are gear driven by a ring gear, dual pinion and two low speed synchronous motors. Copper Mountain has installed on all three mills, the new state-of-the art dual pinion mill drives.

أكمل القراءةUNUSED FL 36' x 24' Dual Pinion Sag Mill with 2 ABB 9,000 kW (12,069 HP) Motors for Total Power of 18,000 kW (24,138 HP) Inventory ID: 6C-HM03 Manufacturer: FL

أكمل القراءةSingle stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. Fuller-Traylor SAG/AG Mills range in size from 4.3m through 12.2m in diameter with powers as high as 28,000 kW.

أكمل القراءة2 x Ball Mills & 4 x GE Motors For Sale/Re-Assignment Mill Details (2 x Ball Mills & 4 x GE Motors, Type of Mill Ball Mill Mill Dimensions 6,706 mm x 11,125 mm (22' x 36.5') (D x L) Mill Speed 12.44 RPM Liners Excluded Mill Drive Motor Type Dual Pinion Synchronous (2 Motors per Mill) Mill Drive Motor Size 2 x 4,650 kW min = 9,300kW per mill

أكمل القراءةdrive 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. Configured in a twin motor arrangement, the motors share load in the tandem mill. The Customer Need

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