The reliability of large diameter, high horsepower ball mill is paramount when large production and minimum downtime is required. The 17 ft. x 56 ft. double compartment ball mill at St. Lawrence Cement Company has the first gearless drive …
1 – Ring Motor and Mill Complexities. We have been fortunate to undertake detailed mechanical and structural design reviews and audits of all mill types from the five major mill vendors and of ring motors from both the gearless drive vendors. We have …
Gearless Mill Drives Go Gearless LITTLE GUJARAT. Gearless Mill Drive Comparison. Gearless Mill Drive Comparison. Abb Gearless Mill Drives. Milling Equipment abb gearless mill drives A class of machinery and equipment that can be used to meet the production requirements of coarse grinding fine grinding and super fine grinding in the field of industrial grinding.The finished product can …
A comparison of the rotor drive with gearless and CCV twin pinion system, on a cost and Comparative Drive Systems for 13 MW SAG Mill (Morgan, 2001). Get Price sag milling in australia – focus on the future - Orway Mineral
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gearless mill drive comparison cingoliavventura.it. ge mining gearless drives. ge mining gearless drives positivecharacter is a digital publishing platform that makes it simple to publish magazines alogs newspapers books and more online Get Price And Support Online Gearless mill drives Mining Weekly. Gearless Ball Mill Images Polrecreatienl ...
For gearless drives, motor torque output at the maximum desired operating mill speed and ball charge volume has to be determined. Primary Mills: Torque Output (by Motor) vs Torque Demand (by Mill) For the purposes of this discussion, "drive speed" refers to …
SIMINE Gearless Mill Drives – outstanding reliability at your hand The Gearless Concept The Gearless Drive avoids any contact between the rotating mill and the static parts of the motor. This enables a contin-uous workflow without maintenance on the gears or the pinions. What used to be downtime is now productive time.
Gearless mill drive order ABB has received an order for the first gearless mill drive (GMD) system ever to be installed in an Indian manufacturing plant. The order was placed at the end of October 2009, by the Indian cement manufacturer Lalitha Cement Ltd. (LCL), located in Hyderabad, the capital of the Indian state of Andhra Pradesh.
gearless mill drive comparison. FOB Reference Price:Get Latest Price the mill for this comparison is a 4.4-meter diameter by 13.6 meter long ball mill with a 5000 hp drive motor. it is designed for approximately 90 s.ton per hour. file size 665kb abb gearless mill drives youtube. feb 21, 2019 our gearless mill drive system is a robust, fit for purpose solution engineered for reliable, long ...
World's largest geared drive – 2x8500kW – Wushan, China (operating) Among the many reasons that geared drives on large SAG mills are not favoured, is due to not having an efficient variable speed drive option (60 to 80% critical speed), which is required for process reasons.
Mill Size: SAG Mill 38 feet/11,58 m Ball Mills 25 feet/7,62 m Ore processed: Copper Ore Drive Rating: SAG Mill 19,4 MW / 9,31 rpm Ball Mills 13,43 MW / 11,5 rpm Award of Contract: November 2000 Start of Operation: December 2002 ABB's scope of supply: Four complete Gearless Mill Drive Systems including: Wrap-around Motors Cycloconverters ...
Gearless mill drives are becoming the drive system of choice on large ag, sag and ball mill hen drive systems are compared the main criteria are operating. Read More Increasing Availability Through Advanced Gearless Drive Siemens. The comparison of a conventional drive train to a gearless drive for a grinding mill is shown in figure 1igure 1 ...
gearless mill drive comparison - lasverganchas. That is why the gearless drive of a grinding mill is one of the most crucial pieces of equipment in the concentrator and why it is subject to particularly high demands. Siemens has provided about 80 SIMINE Gearless mill drives to …
A 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 …
The comparison of a conventional drive train to a gearless drive for a grinding mill is shown in figure 1. Figure 1 – Top view of SAG mills with alternative drive options; left side: dual pinion drive including motor, gearbox, pinion and girth gear;
A gearless drive for the drum of a cement mill or the like wherein the pole wheel, i.e. the rotor of a low-speed electric motor surrounds the drum and is connected to it by a circumferential array of uniformly spaced studs which project radially from the drum and are received in a similar array of uniformly spaced recesses located in the pole wheel structure.
gearless mill drive comparison. Gearless mill drives Grinding ABB. Our GMD eliminates all mechanical components of a conventional 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 itself becomes the rotor of the gearless motor ...
Table 1 — Mill comparison capital cost Project Mill size DXL (ft) Drive system Capital cost Horsepower Production rate A Ptimary SAG, 26x11 Vatiable speed ac synchronized motor mill, $1.3 million 4025 11,000 coupled to a gear dfive. motor, $1.3 million Secondary ball mill, 18x27 ac synchronized motor coupled to a gear mill, $1.6 million
gearless mill drive comparison omettiincucina. gearless mill drive – Grinding Mill China. That is the reason why the gearless drive of a grinding mill is the most crucial to be almost doubled in …
mill from and a 28 Mega-Watt (MW) Gearless Mill Drive (GMD) from ABB for the Conga Project in Peru. 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 SAG mill circuit. This paper
gearless mill drive comparison Gearless Mill Drive Sales Rev Up to Meet Demand. Gearless mill drives are becoming the drive system of choice on large AG, SAG and ball mill installations for new projects and existing mill expansions
The gearless mill drive (GMD) has been continuously developed since its introduction in 1969. The structural design, the electrical parts and of course motor monitoring and control have all experienced major developments that have enabled larger, …
Gearless Mill Drive Comparison. Abb Gearless Mill Drives. Milling Equipment abb gearless mill drives - A class of machinery and equipment that can be used to meet the production requirements of coarse grinding fine grinding and super fine grinding in the field of industrial grinding.The finished product can be controlled freely from 0 to 3000 mesh.
Gearless drive for a SAG mill. Fig. 3 shows the comparison between a conventional pump drive and the gearless scheme using low-speed high-torque motor fed by a frequency converter. With a global efficiency of near 89% instead of 76%, the latter has an improvement in efficiency of about 13% because it has no gearbox losses.
Significant energy and cost economies can be achieved with a gearless mill drive working with a ball mill in these upper power ranges. This prospect should also be of interest to the cement industry.
That is why the gearless drive of a grinding mill is one of the most crucial pieces of equipment in the concentrator and why it is subject to particularly high demands. Siemens has provided about 80 SIMINE Gearless mill drives to the mining industry …
Gearless Mill Drive Comparison - vanmorrisonpub.cz. Overland conveyor drives Geared or gearless. gearless drive mills and crushers gearless mill drive comparison Siemens expands mining portfolio to include gearless drive gearless mill drive27 Aug 2010 Siemens is now able to provide to mining companies a gearless drive 2 x 68 MW for the two ball ...
Managing and monitoring gearless mill drives. Posted by Matrix on 15th December 2014. ABB has re-packaged its proven and tested service offering for gearless mill drives (GMD) remote diagnostic services with the launch of a newly created …
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mills within a circuit, followed by the selection of the mill sizes to fulfill the requirements. The optimal drive type can only be selected after determining the mill size, the need for variable speed and the characteristics of the electrical system of the plant. …
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