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Gearless Mill Drives | Beneficiation | Österreich

Siemens has provided about 80 SIMINE Gearless mill drives to the mining industry since 1980. In these thirty-plus years, SIMINE Gearless mill drives have accumulated a combined total of over 500 years in operation time – and this number is steadily growing even as you read this.

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Commissioning Variable Speed SAG Mill Gearless Drive

Each SAG primary mill (Boliden-Allis) operates with two 5.000 HP. Ball Mills as secondary grinding stage. The Electric Drive (SIEMENS) consists a 11.000 HP synchronous motor of variable speed. General Description of the Drive The SAG Mill Drive is mainly

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Innovative Gear Drive Solution for Grinding Mills | E & MJ

Cemtec and Siemens jointly developed a standard-equipment, economical solution to handle the power needed to drive a 10.4 x 6.1-m, 15-MW SAG mill and an 8.2 x 14-m 18-MW ball mill at this Russian gold mill site. Cemtec , an Austrian company, develops and executes projects for the mineral processing industry worldwide. ...

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The arrival of Siemens low speed dual-pinion mill drives at …

 · Logistic challenge: New stage goal. The arrival of the low speed dual-pinion mill drives for Collahuasi Copper Mine, Chile Siemens Mining http://www.industry.siemens ...

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Optimise SAG mill capacity and avoid unnecessary …

The one sound operators do not want to hear is the sound of the mills standing still. A gold-processing plant, I visited recently valued their SAG mill downtime at US$ 130,000 per hour, so extending the life and availability of mill liners is crucial to them. The reduced ...

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Gearless Mill Drives | Beneficiation | Siemens Global

Siemens has provided about 80 SIMINE Gearless mill drives to the mining industry since 1980. In these thirty-plus years, SIMINE Gearless mill drives have accumulated a combined total of over 500 years in operation time – and this number is steadily growing even as you read this.

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Gearless Mill Drive

 · Sentinel: Siemens Gearless Mill Drives - Duration: 4:11. Siemens 26,132 views 4:11 ABB ring-geared mill drives - Duration: 2:50. ABB in Mining 477 views 2:50 ...

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The behavior of the cycloconverter fed gearless drive under abnormal electrical conditions

T he behavior of the cycloconverter-fed gearless drive under abnormal electrical conditions 2 Here is shown how the cycloconverter cuts out of the incoming line three-phase voltage of 50 Hz or 60 Hz one phase of the motor voltage of a low rated frequency, for

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Fuller Sag Mill

 · SAG mill, 18' diameter x 10-1/2' long, manufactured by Fuller, rubber-lined, driven by 1500 HP, 4160 volt, 1192 RPM, continuous motor, 5010 frame, …

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Siemens to Upgrade SAG Mill Drives at Bingham Canyon | …

Rio Tinto has commissioned Siemens Industry, Inc. to modernize three semi-autogenous grinding (SAG) mills at Kennecott Utah Copper’s Bingham Canyon mine/plant complex near Salt Lake City, Utah, USA. According to Siemens, the DC-powered drives will be ...

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problem Scaling Mismatch to Ballbar

Usually the sag compensation table is used to compensate the horizontal spindle bending due to the weight of the spindle. In your case it could be used to compensate the squareness between the axis. 3) I think that you don't improve the precision of the machine by doing a new optimization of the drives because none of the errors of the ballbar test that you showed us, can be decreased more ...

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Siemens

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GMD technology for Minera Escondida

ABB announced that it will supply a new 15.7 MW gearless mill drive (GMD) system for a 26 ft ball mill, including transformers, ring motor and a complete electrical room entirely equipped, to Minera Escondida/Chile. The Siemens Drive Technologies Division is ...

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First use of Sinamics SL150 cycloconverters for grinding …

Quadra FNX Mining Ltd., a Canadian mining company, has commissioned Siemens to modernize the drive in an SAG mill in its Robinson open-cast copper mine in Nevada, USA. This will be the first time that an ore mill is to be equipped with a Sinamics SL150

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biggest ball mill in the world

When size really does matter world's largest ball mills with 14 megawatts of installed power. To put its size into perspective, the ball mill will span a width of 7.3 metres, a length of 13m. New Standards For Productivity - Siemens the new SAG (Semi-Autogenous ...

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Gearless Drives

Utah, SAG mill and a 11,200 kW gearless drive for the El Teniente, Chile, SAG mill. In a continued call for larger, even more powerful drives, Siemens kept pace. In 1996, Freeport ordered the first gearless drive for a 38-foot SAG mill located at the

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Ok Tedi plans for long term with SAG mill upgrades by …

For SAG 2, Siemens supplies two 8 pole, high speed induction motors to replace the existing slip-ring motors, eliminating all brush or slip-ring related outages and maintenance activities. The four identical variable speed drives (VSD) operating all four mill motors are Sinamics Perfect Harmony GH180 units.

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Sag mill

 · Boltprep. Gearless Sag mill running after bolt elongation checks carried out. Boltprep. Gearless Sag mill running after bolt elongation ... Siemens 23,589 …

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The Magazine

grinding (SAG) mill as well as a ball mill. Both mills will be equipped with Siemens Integrated Drive Systems that will help B2Gold reduce its capital investment and save up to 50% on spare parts. By using converter technology for regulating the rated speed of the

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Sentinel: Siemens Gearless Mill Drives

The mills at Sentinel in Zambia are amongst the world’s biggest, with 2 off 40 ft SAG mills complete with 28 MW drives, and 2 off 28 foot-ball mills with 22 ...

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SIMINE Gearless mill drives

Our solution: SIMINE Gearless mill drives – outstanding reliability for your mine The gearless concept The gearless drive avoids any contact between the rotating mill and the static parts of the motor. This allows for contin-uous workflow without maintenance on the

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SIMINE MILL GD

the mill-motor interface is a multifaceted task, a proce-dure which has been repeated successfully many times in the past. Siemens Industry Sector and our subsuppliers have earned the Quality Systems Certificate for the Standard ISO 9000 and haveISO 9001.

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Increasing availability through advanced Gearless Drive …

Mill speed can be adapted to upstream and downstream processes – avoids overgrinding, and optimizes load distribution between SAG and ball mill (Mular, Halbe & Barratt, 2002). Power consumption is influenced by load respectively torque and mill

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Lumwana SAG Mill Commissioning Commences

that the Lumwana Copper Project’s SAG mill (18MW) was fully energized and rotated by the engineering contractor Ausenco Bateman JV (“ABJV”), using Siemens ‘gearless mill drives’ on 28th June. This followed an extensive testing and commissioning program

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The operation modes of a grinding mill with gearless drive

pecially SAG mills, has increased considerably in recent years, owing to their many benefits. Besides adjusting the mill to softer or harder ore, the vari-able speed of the gearless drive is used to facilitate the Inching, Normal Start and Stop operation modes of the

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Gearless Mill Drives

Antamina Compania Minera Antamina S.A. Peru Project: One SAG Mill and 3 Ball Mill Drive Systems Capacity: SAG Mill 1000 t/h Ball Mills 1000 t/h Consultant: Bechtel, USA Mill Builder: FFE Minerals, USA Mill Size: SAG Mill 38 feet/11,58 m Ball Mills 24 feet/7

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to Design and Supply the World’s Largest SAG Mill …

has been selected to design and supply a 42ft x 25ft, (12.8m x 7.6m) 28MW gearless SAG mill, plus two 26ft x 42ft, (7.9m x 12.8m) 15.6MW ball mills and two VTM-1500-WB VERTIMILLS® for Newmont Mining’s Yanacocha Conga copper-gold project in

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Frozen charge detection and automatic loosening with gearless …

The SIEMENS Frozen Charge ShakerTM is presently installed at 3 operations throughout the world. The installations are Rio Paracatu Mineração (RPM) with a 38ft, 20 MW SAG Mill in Brazil and Lumwana having a 38ft, 18 MW SAG and one 26ft, 16 MW Ball

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siemens.com/mining SIMINE Gearless Mill Drives

8 Sophisticated design – from engine to project management Whether you’re talking about SAG or ball mill, space is a sensitive subject, especially in the concentrator. That’s why we always design our SIMINE MILL Gearless Drives to combine maximum

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