Antamina Compania Minera Antamina 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/7,32 m Ore processed: Copper/Zinc Drive Rating: SAG Mill 20,1 MW, 9,23 rpm Ball Mills 11,2 MW, 11,38 rpm
WhatsApp: +86 18203695377
• 22 MW GMD for 28' ball mill • 28 MW GMD for a 40' SAG mill • 28 MW GMD for 42' SAG mill Whether it is size or an installation at the highest altitude (4600 ), ABB's GMDs are well positioned to contribute to the building of larger and ever more powerful mills. — Leading the gearless mill drive evolution
WhatsApp: +86 18203695377
At Los Bronces, part of the Anglo American Chile company, Siemens supplies a 22 MW gearless drive for a 40foot SAG mill and two MW gearless drives for two 26foot ball mills. Thanks to this development project, Los Bronces will be one of the biggest copper and molybdenum mines worldwide.
WhatsApp: +86 18203695377
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.
WhatsApp: +86 18203695377
Siemens Gearless Drive Wincc Pictures Free download as Word Doc (.doc), PDF File (.pdf), Text File (.txt) or read online for free. san cristobal siemens ... Ball Mill: Page: 8 Gearless Drive Cycloconverter Cooling System: External Cooling System (Option): Page: 9 Gearless ...
WhatsApp: +86 18203695377
The gearless mill drive (GMD) has been continuously developed since its introduction in 1969. The ... Ball Mill SAG Mill Figure 2 Core pressing system with spring plate/washer and retightening statistics in a typical installation Access to the inside of the motor and the cooling system
WhatsApp: +86 18203695377
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 the output speed of any mill drive system, whereas that of
WhatsApp: +86 18203695377
CHH624 Gearless Mill Drive Operation and Maintenance Course goal The goal of this course is to provide participants with the required practical knowledge and information on safe operation and maintenance of the gearless mill drive (GMD) system. This training will help to enhance the operation and the maintenance of the GMD in order to ensure
WhatsApp: +86 18203695377
Siemens' answer is the latest gearless drive technology for grinding and conveying. Gearless drive solutions are surpassing the mechanical limits of con ventional drive systems serving to utilize the principle of economies of scale.
WhatsApp: +86 18203695377
The first gearless mill has recently been put into service in Le Havre, France. This is probably the world's largest cement mill. The cement output is rated at 200 ton/h, and the motor rating is 8700 hp (7400 kW) at 15 r/min. For the first time in the history of tube mills the driving motor has been built directly on the mill, i. e., the mill drum is also the motor shaft.
WhatsApp: +86 18203695377
Allergy Tracker gives pollen forecast, mold count, information and forecasts using weather conditions historical data and research from
WhatsApp: +86 18203695377
ABB continuously extends technical and performance frontiers of ringgeared mill drive (RMD) technology to fit your site requirements. We provide optimized mill drive solutions for all types of ringgeared mills: low and high speed, single and dual pinion, with and without a gearbox — all designed for reliable, long life and low maintenance ...
WhatsApp: +86 18203695377
With this innovative concept the gearless mill drive eliminates all critical mechanical components inherent within a conventional mill drive system, such as ring gear, pinion, gearbox, coupling or air clutch, motor shaft and motor bearings. ... even for ball mills where these are not seen yet as a must. The initial capital costs are higher than ...
WhatsApp: +86 18203695377
Image credit: Rexnord Corporation. An inching drive is used as an auxiliary system to the main drive for a large machine such as a ball mill, industrial kiln, conveyor, or elevator. Its purpose is to turn the equipment at a speed slower than the normal operating speed — typically 1 to 2 rpm, although fractional rpms are also common — and to ...
WhatsApp: +86 18203695377
The origins of the failure can be traced back to c. 1994 when PT Freeport Indonesia ordered its first gearless drive for their 34 ft SAG mill. ... The difference between the measured stresses at Telfer and Antamina is that the liners in the Telfer ball mill had been wedged by ball scats and ore as shown in Figure 4 and thus the liners supported ...
WhatsApp: +86 18203695377
Significant energy and cost economies can be achieved with a gearless mill. 444 drive working with a ball mill in these upper power ranges. This prospect should also be of interest to the cement industry. The technology is available for an upsizing of cement grinding installationsand the gearless mill drive is a proven, reliable drive.
WhatsApp: +86 18203695377
The mill liner design pattern has a high/low design and has 78 rows per circle. FIGURE 9 FIGURE 10 illustrates the use of the Rajamani program for a 40 ft ( m) diameter mill operating with a 13% ball charge. The mill is turning at rpm (approxi mately 74% ) and has a 20 degree angle on the lifter bar.
WhatsApp: +86 18203695377
The mill used for this comparison is a diameter by meter long ball mill with a 5000 HP drive motor. It is designed for approximately 90 per hour. This type twocompartment mill is a state oftheart shell supported cement finish mill. The torque and time requirements of the mill with the ball
WhatsApp: +86 18203695377
Zurich, Switzerland, July 30, 2013 ABB, the leading power and automation technology group, announced today the acquisition of Alstom's ring motor business to enhance its gearless mill drive (GMD) system business. The parties agreed not to disclose financial details of the transaction. The business, based in Bilbao, Spain, has about 120 ...
WhatsApp: +86 18203695377
• 22 MW GMD for 28' ball mill • 28 MW GMD for a 40' SAG mill • 28 MW GMD for 42' SAG mill Whether it is size or an installation at the highest altitude (4600 ), ABB's GMDs are well positioned to contribute to the building of larger and ever more powerful mills. — Leading the gearless mill drive evolution
WhatsApp: +86 18203695377
In future, the 36foot SAG mill of the new production line will be operated with a drive. A further gearless mill drive with 22 megawatt output will ensure equally efficient and reliable driving of a ball mill with an inner diameter of 28 foot. Gearless drive systems are distinguished by their high efficiency and their low ...
WhatsApp: +86 18203695377
Quick access to active weather alerts throughout Sønder Felding, Central Denmark Region, Denmark from The Weather Channel and
WhatsApp: +86 18203695377
In Chile, in Anglo American's Los Bronces mine,Siemens Gearless Mill Drives have been implemented for the Confluencia concentrator plant. Siemens GMD's are e...
WhatsApp: +86 18203695377
Interactive weather map allows you to pan and zoom to get unmatched weather details in your local neighborhood or half a world away from The Weather Channel and
WhatsApp: +86 18203695377
ABB's GMD is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills, This 'workhorse' for grinding operations combines a robust, servicefriendly and fit for purpose design to provide highest throughput, reliability and availability for your processing plant. eBook: Grinding transformation
WhatsApp: +86 18203695377
The 17 ft. x 56 ft. double compartment ball mill at St. Lawrence Cement Company has the first gearless drive built in North America and has the world's largest hydrodynamic bearings currently built and running. The machine has seen three years operation and has met its specifications. Structural Design of Mill and Bearings
WhatsApp: +86 18203695377
The gearless ball mill drive can be designed in two basic arrangements. Fig. shows an arrangement with the motor rotor supported by a strengthened and extended mill trunnion shaft and bearing. This arrangement retains maximum accessibility to both mill and motor. Fig. shows a wraparound construction with the motor rotor supported ...
WhatsApp: +86 18203695377
Sønder Felding Kirkegård, Sønder Felding, Herning Municipality, Central Denmark Region, Denmark. Records:. Images:. Cemetery page showing maps, records, and images of headstones in the Sønder Felding Kirkegård, Sønder Felding, Herning Municipality, Central Denmark Region, Denmark | BillionGraves Cemetery and Images. Get the BillionGraves app now and help collect images for this cemetery!
WhatsApp: +86 18203695377
A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
Copyright © 2023 GMC Co., Ltd. SiteMap
