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the main drive in main drive mode and the amount of torque generated by the inching drive train. Inching drive systems are traditionally designed to generate 120% of main drive torque while in inching mode. This torque comparison is the final arbiter between motor size and ratio in the inching reducer. Multi-cylinder internal combustion engines
ABB's state-of-the-art gearless mill drives (GMD) and gearless conveyor drives (GCD) have already become differentiators when combined with advanced digital services. These two technologies have …
Collahuasi Chile: 40 Gearless Mill Drive NOT Siemens supply. Escondida Chile: 38 Gearless Mill Drive NOT Siemens supply. Escondida Chile: 25 Gearless Mill Drives NOT Siemens supply. Antamina Peru: 38 Gearless Mill Drive NOT Siemens supply. Antamina Peru: 24 Gearless Mill Drives NOT Siemens supply. SIMINE Mill Gearless …
Page 6 and 7: SIMINE Mill Gearless Drive Masterte; Page 8 and 9: SIMINE Mill Gearless Drive Experien; Page 10 and 11: SIMINE Mill Gearless Drive Experien; Page 12 and 13: CODELCO El Teniente, GD 12000 kW Fi; Page 14 and 15: Cadia Australia, GD 20000 kW, First; Page 16 and 17: SIMINE Mill Gearless Drive Referenc
The current paper looks at evaluating the merits of large geared mills versus gearless driven mills by evaluating the following factors: The capability of currently available …
New Drive Configuration Tail: 0 kW Head: 1 x 5000 kW. New Drive Configuration allows a component reduction of 50%, means only one: Driven Motor shaft per pulley Motor, Frequency Converter, Transformer, MV-breaker in case of single drives per pulley or smaller Multidrive system. Max. belt tension might be higher (to be checked for …
ABB's state-of-the-art gearless mill drives (GMD) and gearless conveyor drives (GCD) have already become differentiators when combined with advanced digital services. These two technologies have …
The Siemens 42ft gearless mill drive, still an evolutionary design approach? @inproceedings{Tischler2016TheS4, title={The Siemens 42ft gearless mill drive, still an evolutionary design approach?}, author={Kurt Tischler}, year={2016} } K. Tischler; Published 2016; assets.new.siemens.com. Save to Library Save.
Summary. September 1, 2010 - ABB won an order from Newmont Mining Corporation to engineer three gearless mill drive (GMD) systems to be installed at the Yanacocha Minas Conga oxide copper gold project in Peru. Fluor Corporation in Santiago, Chile, will act as EPCM contractor for this important project; Corporation will be …
The test and study work showed that a single line 42 ft SAG mill circuit gave the most favorable project economics in comparison to an equivalently powered single line 40 ft …
Single cement mill of 160 metric tons / hour was required. No gearbox manufacturer could supply a gearbox for this. BBC (later ABB) came up with the idea of a Gearless Mill Drive. BBC was awarded to supply the first GMD in 1969 Le Havre/France. The first GMD was running with its original design from 1969 until.
Gearless mill drives (GMDs) constitute a compelling alternative to traditional ring-geared mill drives (RMDs) in such environments. Both drive types can be used to power large semi-autogenous (SAG), ball and autogenous mills, but GMDs are proven to offer superior availability, uptime and efficiency. When the first GMD was developed by …
Baden, Switzerland — Gearless mill drive systems will maximize productivity and energy efficiency at a new copper mine in northern Brazil. ABB says it recently won an order from Vale (formerly CVRD) to deliver such a system to the Salobo mine, located at the Tapirape-Aquiri National Forest, in the state of Pará, Brazil.The mine …
Go gearless to meet your business objetives by exceeding standard availability targets in your grinding operations. ABB's GMD is the most powerful mill drive system in the market to power semiautogenous …
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A cycloconverter-fed gearless mill drive is a drive system that has hardware and software protection functions to protect the equipment in case of abnormal operating conditions, malfunctions or ...
Detail of Training Simulator: drive control section with the SINAMICS controllers and the interface board to power section Your challenge: Maximum operations at the bottleneck The Gearless Mill Drive (GMD) is potentially the most critical bottleneck in the mine production process. Each hour of downtime can result in a heavy financial loss.
Table 1 — Mill comparison capital cost Project Mill size DXL (ft) Drive system Capital cost Horsepower Production rate coupled to a gear dfive. motor, $1.3 million Secondary ball …
Grinding Process: Gearless Mill Drives. Siemens has provided almost 100 SIMINE Gearless mill drives to the mining industry since 1980. In these thirty-plus years, SIMINE Gearless mill drives have …
Two 28 MW gearless mill drive systems (GMDs) are operating in the mine's 40 foot SAG mills and four 16.5 MW GMDS are employed in 26 foot ball mills along with associated control systems. The six ABB Gearless Mill Drives have been installed since late last year and are all now in continuous operation; ABB team at Mina de Cobre in …
For drives syste ms comparison the main c riteria are: 1. ... Since th e gearless mill drive i s typically . by far the largest power consumer in a concentrator plant, the .
Collahuasi Chile: 40 Gearless Mill Drive NOT Siemens supply. Escondida Chile: 38 Gearless Mill Drive NOT Siemens supply. Escondida Chile: 25 Gearless Mill …
The SIMINE Gearless mill drives pump system significantly enhances concentrator productivity by eliminating the reducer gear between motor and pump and all corresponding maintenance. In addition, the …
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, …
Drive unit assembly Safety interlocks Manual coupling -EN-MSE Custom designed inching drive To help during maintenance work • Capable of positioning and rotating a loaded mill at low speeds • Typically used to balance the charge inside a mill during maintenance activities, such as liner replacements, inspection, and alignment of ...
Example of starting and stopping behavior of gearless drives. Comparison between drive solutions (Fig. 03) shows that the geared drive requires significantly more components, such as bearings and couplings. ... The …
The $1.2 billion expansion, which saw throughput rise from 60,000 t/d to 120,000 t/d, involved the addition of two new thyssenkrupp-made ball mills, with ABB providing the gearless mill drives (GMD) technology. This came on top of the 33 mills the miner already had up and running as part of the existing 60,000 t/d plant at the operation.
The optimum operation was found after 3000 hours running. The capacity was some 10% over the guaranteed capacity. This large mill 17′ x 56′ is not less efficient than a smaller mill 10′ x 28′ used in …
Detail of Training Simulator: drive control section with the SINAMICS controllers and the interface board to power section Your challenge: Maximum operations at the bottleneck …
The comparison of a conventional drive train to a gearless drive for a grinding mill is shown in Fig. 1. Figure 1 – Top view of SAG-Mills with alternative drive options; left side: dual pinion drive including motor, gearbox, pinion and …
More powerful and larger mills, higher ball charges and demanding ambient conditions call for a strong partner for grinding solutions. We help you meet these challenges with our drive systems that come with a long track …
Energy Consumption. Gearless elevator motors can be smaller than geared elevator motors because they do not have gears. The gearless motors can be smaller than 1⁄2 of the geared motor. This makes the gearless motors more effective when it comes to the use of electricity. By making the engine smaller, the other parts would also be smaller.
Siemens is now able to provide to mining companies a gearless drive system for SAG mills with a tube diameter of 42 feet. This enables throughput to be almost doubled in comparison with the 38-foot mills commonly used today. With this innovation, Siemens is responding to the rising demand...