Siemens expands mining portfolio to include gearless drive ,aug 28, 2010 38-foot sag mill with gearless drive system from siemens. throughput can be almost doubled with a 42-foot mill. the 42-foot ring motor is the centerpiece of the gearless drive and wrapped around the tube mill. An increase in tube diameter means that the mass of the ore being ground rises dramatically, and hence also the strain on structural
Jaw crusher is widely used in crushing the medium particle size materials of varieties of minerals and large materials, and it is widely used in mining, smelting, building material, highway, railway, water conservancy and chemical industry and other industries.
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Ball mill is suitable for grinding various ores and other materials. It is widely used in mineral processing, building materials and chemical industry.
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aug 28, 2010 38-foot sag mill with gearless drive system from siemens. throughput can be almost doubled with a 42-foot mill. the 42-foot ring motor is the centerpiece of the gearless drive and wrapped around the tube mill. An increase in tube diameter means that the mass of the ore being ground rises dramatically, and hence also the strain on structural jul 08, 2014 gearless mill drive system in iron ore processing. abb was recently contracted to supply gearless mill drive systems for two foot semiautogenous grinding mills at the serra azul iron ore mine in brazil. the serra azul mine unit, owned by mmx minera met licos, an ebx group company, is located in the iron quadrangle of oct 29, 2019 two MW gearless mill drive systems are operating in the mines 12-metre sag mills and four 16.5 MW gmds are employed in ball mills along with associated control systems. gearless mill drives are the workhorses for grinding operations which are at the heart of any mine.may 25, 2021 gearless mill drive is a major investment for a plant and as the beating heart of the production process is essential. thus, having knowledge of how to make most of your gmd is crucial. the following advanced digital service can enable optimized productivity at the highest level: abb ability predictive maintenance for grinding
e&mj reported in october 2010 abb groups minerals division had won an order from newmont mining corp. to engineer three gearless mill drive systems to be installed at its yanacocha minas gear drive sag mill Vs gearless drive sag mill gearless mill drive comparison gearless mill drive comparison beltconveyers.net. gearless mill drives for grinding the first gearless mill drive zinc ore ag mill weightgearless mill drives are a well established solution for grinding applications in the minerals and mining industries. the paper describes the functionality and technical features of such drive systems as well as their advantages compared to other drive solutions.with the proven use of gearless drive technology, the limitation of AG sag mill size due to gearing constraints has been motor speed for ball mill mining equipment crusher abb ball mill US application portal this algorithm maintains a constant magnetizing current from zero to base motor speed.
sag mill trommel mill braking system hydraulic jacking system portable hydraulic power unit. motor and drive 26,000 HP siemens wrap-around drive motor Hz synchronous gearless, wrap around differential protectionfeb 28, 2011 february 28, 2011 abb, was awarded an over $47 million contract from codelco for the delivery of three gearless mill drive systems, gas-insulated switchgears e-house and power transformers for the ministro hales project at kms north from calama, chile. the MH project brings the number of gmd orders for abb to 100 units.In december 2001, gold fields acquired the st. ives project near kalgoorlie, and only in 2003 did the new owner decide to go ahead with the project and to install the 36-ft sag mill and its 13.5-mw gearless mill drive at st. ives. the pre-commissioned containerized e-house, which includes the complete power and control electronics for the mill sep 21, 2012 the mill will be driven by a gearless motor drive which at 28.w is equal to the largest grinding mill power ever used in the mining industry. the sag mill design is based on outotecs proprietary grinding mill technology, developed over decades for maximum reliability and performance.
jun 10, 2021 the siemens 42-ft gearless mill drive, still an evolutionary design approach? optimization of the drive system for a cyclone feed pump increasing availability through advanced gearless drive technology design and dynamic behavior of large ring motors for grinding mills dec 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 to above the gearless drive is typically used because gearboxes and pinion gears reach their present limit in size.the ccv ring motor drive is used at cadia and olympic dam It has been the industry standard for sag mills above MW capacity. however, pinion systems to MW per pinion and dual motor systems with quadruple pinions extend the range of gear driven mills to a theoretical limit of mw. the ernest henry sag millgearless mill drives are the grinding solution of choice in challenging environments. By eliminating bolt-on mechanical components such as ring-gears, pinions, couplings and gearboxes, gmds offer ore producers unrivalled availability, efficiency and durability, while reducing operating expenditure, according to gmd provider abb.
the company selected abbs MW gearless mill drive system for the mines ft sag mill, as well as other drives, electrical infrastructure equipment and a long-term service agreement this is expected to reduce operating costs, improve process throughput and reliability while saving energy and keep equipment in top form.sep 25, 2018 table of contentsgeneral description of the driveassembling and characteristicsdrive evaluation the electric operation and design features of the 11,000 h.p. variable speed sag mill gearless drive is presented. the function of the frequency-converter, control system drive and lubrication systems are described. An analysis of the harmonic sag mill gearless drives Go to south american projects. In early september, abb groups minerals division announced it had won an order from newmont mining corp. to engineer three gearless mill drive systems to be installed at the yanacocha minas conga oxide copper-gold project in peru. fluor corp. in santiago, chile, will act as epcm mar 27, 2012 siemens modernises sag mill gearless drive in cadia valley. posted by matrix on march 2012 siemens has modernised a gearless grinding mill drive at newcrests cadia valley operations, near orange in new south wales, australia. this is the first time that a gearless grinding mill had been equipped with a sinamics cycloconverter control.
sep 01, 2010 newmont mining corporation selects abb to design three gearless mill drive systems for their new high-altitude copper gold project in peru. september 2010 abb won an order from newmont mining corporation to engineer three gearless mill drive systems to be installed at the yanacocha minas conga oxide copper gold project in peru.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 gears next size gearless mill drive, i.e. a mill. It is a dual design approach considering, on the one hand, the experi-ences siemens made with gearless mill drive instal-lations over the past years and, on the other hand, using computerized design tools calculating the system behavior where experience does not yet exist. MW gmd for a sag mill MW gmd for sag mill whether it is size or an installation at the highest altitude abbs gmds are well positioned to contribute to the building of larger and ever more powerful mills. leading the gearless mill drive evolution the abb gearless mill drive is the most powerful mill drive system available,
jun 04, 2021 siemens has provided about 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. this is a benchmark we are immensely proud of.gearless mill drive technology has further expanded the use of large sag milling allowing metso outotec to produce the worlds largest sag mill of in diameter drawing power at mw. today, metso outotec is the world leading supplier of gearless sag mills operating globally. premier horizontal grinding mills engineered to excelnov 11, 2018 gearless synchronous direct drive of the wrap-around design was selected instead, offering several inherent advantages to the owners and operators the new mill with the rated capacity could be installed in place of the old obsolete ph mill without disturbing the remaining mills.