gearless mill drives Mine Equipments
Gearless mill drives Go gearless The gearless mill drive eliminates all mechanical components of a conven tional mill drive system, such as ringgear, pinion, gearbox, coupling, motor shaft and ...
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Gearless mill drives Go gearless The gearless mill drive eliminates all mechanical components of a conven tional mill drive system, such as ringgear, pinion, gearbox, coupling, motor shaft and ...
gearless drives (Fig 12) have also been compared (above ground level). Gearless drive foundations require a minimum height of approximately to the mill center line. Much higher than for a geared drive at approximately 7m. This results in the GMD requiring
ABBs Gearless mill drive system is the most powerful mill drive system in the market to power semiautogenous SAG ball and autogenous AG mills Advantages of Gearless Motor Drives in Large Ore Mining and Ore processing plants use mills with very high capacity drives Gearless motor drives are the alternative to the conventional motor .
Gearless Mill Drives (GMD) was first used in the cement industry in the late 1960 but have progress to mineral industry due to their possibility to increase the size of the mill significantly relative to the gear driven mill.
Do more with less go gearless. Mine operators are challenged with moving more material on conveyors that may cover distances in the tens of kilometers and ascend steep gradients. To increase overall reliability, mining companies also want fewer transfer stations between conveyors, which may require wider and longer belts.
Gearless mill drives. Discover. A gearless millsdrive system comprises: the synchronous ring motor, the three converter transformers, one excitation transformer and the harmonic filter banks, as well as the Ehouse containing the cycloconverter and control, the motor control centre, the programmable logic controller control system, the ...
3 days ago· In all, two 28megawatt gearless mill drive systems (GMDs) are in use at the mine''s 40ft SAG mills, and four GMDs are employed in 26 football mills. "Gearless mill drives are the ''workhorses'' for grinding operations, which are at the heart of any mine," ABB''s Cobre Panama project manager Rene Chacon said.
gearless mill drive system aquabrandin. Gearless mill drive order, ABB Group The ABB gearless mill drive is the most powerful mill drive system in, Gearless mill drives Go gearless .
plied gearless drives for two 36foot ring motors, developing a 12,000 kW gearless drive for the Kennecott, Ut, 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
Gearless mill drives Go gearless ABB. tional mill drive system, such as ringgear, pinion, gearbox, coupling, motor shaft and motor bearings: By mounting the rotor poles directly onto the mill, the mill...
Its gearless drive system is equipped with two lowspeed synchronous motors with cycloconverters (installed power of MW, motor speed of 63 rpm, rated torque at 576 kNm) and a motor cooling system. Load sharing between the two drives can be adjusted according to the .
For mines of this size, reliable, high efficiency mills are top priority. Siemens Gearless Mill Drives result in reduced total costs and assure a high performance, in accordance with the production requirements of a mining operation.
Our gearless and pinion mill drives redefine operational reliability, availability, maintenance costs, and energy efficiency. In addition, we offer intelligent solutions such as condition monitoring for highest availability. Automation Our automation and process instrumentation enhances your competitive edge, it is a comprehensive outofthe ...
Gearless mill drives (GMDs) have been installed on platinumminer Anglo Platinum''s Potgietersrust Platinum (PPRust) 600 000 t/m concentrator.
Insurability of large gearless MILL drives698 Кб. Figure 1 – The gearless mill drive With this innovative concept, the gearless mill drive (GMD) eliminates all critical mechanical components inherent within a conventional mill drive system, such as ring gear, pinion, gearbox, coupling or .
3 days ago· The six ABB gearless mill drives, which are the most powerful mill drive systems on the market for semiautogenous (SAG), ball and autogenous mills, have been installed since late last year and ...
The SAG mill was fitted with a gearless drive with a power rating of 24 MW and the ball mills were also fitted with gearless drive systems, each providing MW.
Nov 08, 2016· ABB Motor Gearless Mill Drive GMD System. Top 7 Mistakes Newbies Make Going Solar Avoid These For Effective Power Harvesting From The Sun Duration: 7:14. LDSreliance 2,588,365 views
Gearless motors up to 22 MW are in service in many of these ore processing plants. Gearless motor drives are also known as "ring motors" or "wrap around motors." The motor consists of a large number of magnets placed circumferentially on the shell of the grinding mill. This is similar to the rotor of a conventional motor.
Ringmotor of the Gearless Mill Drive (GMD) System. CYCLOCONVERTER Principle The Cycloconverter is a frequency changer which converts a polyphase voltage with the frequency f1 into a single or polyphase voltage with a different, lower frequency f2. On Gearless Mill Drives (GMD), the operational output frequency varies from Hz up to about 6 Hz.
Gearless mill drives. Longer service intervals thanks to lowwear drive processes SIMINE Gearless mill drives'' rpms can be tailored to your operations at any time, and are infinitely variable and uncomplicated. Whether manually or fully automatic – rpms can be adjusted to account for the properties of the ore, resulting in significantly less
Gearless mill drives Go gearless for highest availability, reliability, flexibility and efficiency. 2 GEARLESS MILL DES The gearless mill drive eliminates ringgear, pinion, gearbox, coupling, motor shaft and motor bearings, used within a conventional mill drive .
Gearless Mill Drive Protection Improvements and Its Behaviour at Abstract—A cycloconverterfed gearless Chat Online. gearless mill drive comparison Get Details; SIMINE Gearless Mill Drives When the SIMINE Gearless mill drive is in inching mode, one rotation of the mill is all you need.
SIMINE Gearless Mill Drives is in inching mode, one rotation of the mill is all you need. The mill will achieve the exact angle that was preset by the operator, and it is not necessary to repeat the procedure. At the end of the inching operation, the SIMINE Gearless Mill Drives stops the mill with balanced charge, and with no
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