WEBSAG mill product feeds two parallel ball mills of m× m (internal diameter×length), each with a MW twin pinion drive. The ball mills are operated at a ball charge volume of 30–32% and % critical speed.
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WEBPaper held at SAG Conference 2011 By S. Gaulocher (ABB), Stadler (ABB), Th. von Hoff (ABB), R. Veldsman (ABB), A. Fuerst (ABB) and J. Koponen (ABB): Gearless mill drives (GMDs) are the workhorse in the mineral processing industries, more specifically when it comes to grinding crushed ore and cement (in various production stages) in .
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WEBABB's complete scope of supply included two dual pinion lowspeed mill drive systems for a 34foot 2 x MW semiautogenous (SAG) mill and a 24foot 2 x 7 MW ball mill, engineering and commissioning. The drive systems are comprised of transformers, ACS 6000 MV frequency converters, synchronous motors, advanced mill control, operations .
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WEBSep 10, 2014 · The origins of the failure can be traced back to c. 1994 when PT Freeport Indonesia ordered its first gearless drive for their 34 ft SAG mill. The motor had to fit through a tunnel on the road to the site. This necessitated a change in the frame design from that used in older motors to allow clearance in the tunnel [8]. The next motor for ...
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WEB211 views, 9 likes, 0 loves, 0 comments, 4 shares, Facebook Watch Videos from Alphatec Engineering: Our latest project in a SAG Mill and Ball Mill pinion bearings and drive train concrete foundation...
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WEBSAG mill product feeds two parallel ball mills of m× m (internal diameter×length), each with a MW twin pinion drive. The ball mills are operated at a ball charge volume of 30–32% and % critical speed. The SAG mill trommel undersize is combined with the ball mills' discharge and pumped to two parallel packs (clusters) of ...
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WEBDec 19, 2014 · Advantages of SER drives for SAG mills. Friday, December 19, 2014. For large mills requiring variable speed, the wound rotor motor and SER drive are economical for a total rating of approximately 2MW to 16MW. Above 16MW, the gearless drive (cycloconverter) is typically used because gearboxes and pinion gears reach their present .
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WEBMar 18, 2021 · The processing plant at Mt Milligan is built around a 12m SAG mill, one of only six mills of its kind in the world and the largest in North America. ... The company supplied the gearless mill drive for the SAG mill, as well as two dual pinion mill drives for ball mills. ABB also provided transformers, motors, electrics and synchronisers under a ...
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WEBApr 30, 2015 · This paper describes the function and operation of lubriion systems for Ball Mill and SAG Mill Drives. Provided within this paper are hydraulic schematics, functional description and a general overview of system layout as well as some of the important features and factors relevant to improving the reliability of this very critical part .
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WEBHigh quality Cylinder Copper Hydrostatic Lubriion Semi Autogenous SAG Mill from China, China's leading cylindrical Copper SAG Mill product, with strict quality control Cylinder Copper SAG Mill factories, producing high quality 1000 tph SAG Mill products.
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WEBAug 25, 2011 · Re: Ball Mill Girth Gear and Pinion Alignment. 08/27/2011 2:07 AM. pinion alighnment is done by coating the pinion with a lead based grease. after rotating the drum, the grease marks will show the contact area. the pinion should contact the girth "ring" near the center of the gears. Register to Reply. TonyS.
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WEBNews Press Press area Press releases. WEG successfully tests dualpinion ball mill drive. WEG has successfully tested low speed synchronous motors driven by frequency inverters for mills with dual pinions at its plant in Brazil. As a multinational company, WEG supplies a range of solutions to the mining industry for driving large mills ...
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WEBBall mills designed for long life and minimum maintenance overflow ball mill sizes range from 5 ft. x 8 ft. with 75 HP to 30' x 41' . and as much as 30,000 HP. Larger ball mills are available with dual pinion or ring motor drives. Our mills incorporate many of the qualities which have made the Marcy name famous since 1913.
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WEBOct 19, 2016 · On Mill Installation and Maintenance. Before starting the erection of the mill, adequate handling facilities should be provided or made available, bearing in mind the weights and proportions of the various parts and subassemblies. This information can be ascertained from the drawings and shipping papers.
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WEBNov 1, 2014 · On site we have a Sag Mill Driven by a 5500KW Motor. We have a vibration issue right across the Mill. The highest vibration is 30mm/sec RMS axial on the motor n ... We had a shut down yesterday to check the pinion drive end bearing and the motor journal (white metal bearings). What was noticed is the air gap on the exciter was very uneven.
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WEBJan 13, 2014 · Parts of SAG Mill to be lubried: Trunion Bearing (feed end) Motor Bearings Gearbox Pinion Bearings : SAG mill Diagram Trunion Bearing (dis. end) 11. ... Motor Drive Lubriion System Diagram: Pres. Gauge (before) Pres. Gauge (after) Pres. Regulator Temp. Gauge FILTER (disposable) HEAT EXCHANGER Relief valve MOTOR .
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WEBThe SAG mill pinion energy, W SDT (kWh/t) and SAG discharge Bond ball mill work index, S dBWI (kWh/t), are then used to calculate the total energy to grind the ore from 80% passing 152 mm to 80% passing the client specified final product size P information, along with the ore specific gravity, is used to calculate necessary mill sizes .
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WEBBoth the SAG mill and ball mill are each driven by two gear units. Because, on a conventional drive variant, only one engagement per pinion with the girth gear is possible per side, an economic power limit of about 8 MW per drive is in effect. With the DMG2 gear units, Siemens said this limit expands to as much as 12 MW per drive.
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WEBFeb 27, 2023 · Quad pinion possibilities ... To test the Quadrex Mill Drive torque dividing system under the most severe operating conditions, a fullscale instrumented test bench was designed and built. ... 20 MW SAG mill, you now have the option of a 38 ft gear driven mill. At this size gearless drive is a viable option, but it is significantly more ...
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WEBThis puts the appliion in the realm of a single mill, single pinion operation. Power demand up to 16 MW. This puts the appliion in the realm of dual motor, dual pinion installations. ... Example 3 Extremely variable competency ore with a relatively consistent BWi was treated through a single stage SAG mill without a variable speed drive ...
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WEBSupervised the Installation and Commissioning of a 34' X 18' 2 Sag Mill and 24' X 39' – 6" Ball Mill ... Changing of Pinion Shaft, Annual Inspection, and Training of maintenance personnel. ... Changing of Ball Mill Trunnion bearing, Installation of a refurbished gearbox of the Ball Mill and the checking of drive train ...
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WEBOct 22, 2015 · When mill power is between 18 and 20 MW, which is the current manufacturing limit of ring geared mills [2], either a gearless mill drive (GMD) or a ring geared mill with dual pinion motors can be chosen. Selecting between gearless or ring geared design is mostly dependent on size of the mill and power and speed .
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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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