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SAG mills are essentially autogenous mills, but utilize grinding balls in addition to large rocks to aid in grinding. A SAG mill is generally used as a primary or first stage grinding solution. SAG mills are used at gold, copper and platinum mines with applications also in .
Autogenous mills, semi-autogenous mills and ball mills for wet grinding. A company of Polysius ThyssenKrupp Technologies tk. 2 High-performance systems for wet grinding applications. The comprehensive range of wet grinding ... motor on a SAG mill. Synchronous motor drive with air clutch.
positioning a MV synchronous motor driven ball mill. The Benshaw variable frequency drive powers the 4160Volt - 3500HP synchronous ball mill motor during positioning to smoothly rotate the ball mill and bring it to the proper position for maintenance. The customer's .
Evaluation of synchronous motors on grinding mills. ... retrofitting a SAG Mill with new contro l was a major decision with many possible . ... Synchronous Motors on Grinding Mills: The Different ...
surface of the mill flange. Typically, the synchronous motors used in SAG mills have a power higher than 10 MW. Even ball mills have a power larger than 10 MW. For this reason, they have an important impact in energy consumption and in the operation of the power distribution system. Figure 1. Picture of a typical GMD system for a SAG mill
In addition to the efficiency levels, power factor correction, high torques and low starting current, the constant speed under load variations and low operating and maintenance costs are the main reasons why WEG Synchronous Motors are used in mill driving systems. Induction motors. For ball and SAG /AG mills with a single or double pinion ...
Ring gear drives huge grinding mill. ... speed or adjustable speed through the use of ac synchronous motors or dc motors. ... uses a ring-motor drive, Figure 5. The SAG mill is followed by two 20 ...
Buy used Motors-800-hp from A.M. King Industries. We can help guide you to the best solution for your equipment needs.
AHLSTROM-CEGELEC SAG Mill Drive Synchronous Motor, 3000 HP (2206 KW), 1200 RPM, Type SARX63016, 60 Hz With Harmonic Filters
Mining, Mineral Processing & Power Plant Equipment for Sale since 1999 We offer the most reliable choice for all kinds of Ball Mills, Rod Mills, Pebble Mills, SAG Mills, Mine Hoists, Crushers, Synchronous Motors, DC Motors, Flotation, Mixers, Pumps, Diesel Generators, Natural Gas Generators and all the Mining Equipment you require.
The new mill with 10x the rated capacity could be installed in place of the old obsolete 100tph mill without disturbing the remaining 13 mills. In this design, the rotating field poles of the synchronous motor are saddled directly onto a machined shoulder of the cylindrical mill body itself, thus forming an integral part with the mill.
Mineral Processing. Industrial Applications. Specialised Products for Systems. ... 1 x 44000kW 30 pole 6600 volt Synchronous Motor Location: Kalgoorlie, Western Australia Ernest Henry Mine Application: 1 x 11000kW SAG Mill driven by Dual 5500kW motors, 1 x 5500kW Ball Mill Equipment: 3 x 5500kW 6 pole 11000 volt Wound Rotor Induction Motors
On site we have a Sag Mill Driven by a 5500KW Motor. We have a vibration issue right across the Mill. The highest vibration is 30mm/sec RMS axial on the motor non drive end bearing.(White metal Bearing) The gear mesh frequency is 4200 CPM. The dominant frequency is 2400 CPM.
The gearless drive comprises a synchronous motor designed to operate at low variable frequency from a cycloconverter power supply (CCV). The motor rotor is mechanically attached directly to the rotating members of the mill itself, the stator superstructure is floor mounted, encompassing the rotor.
Dec 19, 2014· Advantages of SER drives for SAG mills; 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 2MW to 16MW. ... I expect that this type of drive would be the most common large mill variable speed mill ...
Jun 28, 2019· The steady state results of the power system study for the 6050hp motor are.experience with synchronous and - Semantic ScholarBall mill and motor. 3 Ball Mill drives with synchronous motor .
SAG Mill Description : RAM Opportunities LLC buys and sells used Mining Equipment, Mineral Processing and Power Plant Equipment such as: Ball Mills, Rod Mills, Pebble Mills, Mine Hoists, Crushers, Pumps, Synchronous Motors, DC Motors, Diesel Generators, Natural Gas Generators and more, call us today and let us help you find your Mining ...
Buy Unused 22' X 10.25' (6.7m X 3m) Sag Mill With 3,300 Hp (2463 Kw) Abb Lss Synchronous Motor With Acs 6,000 Vfd & Liners & Liner Handler from A.M. King Industries. Request a .
When utility softness was a concern, the super-synchronous motor was used. In other parts of the world, the wound rotor motor was preferred. In the late 1950s, when mills approached 2500 HP, the center drive mill arrangement with the enclosed geared drive using a high-speed synchronous motor became quite popular.
Inventory ID: 6C-HB02. UNUSED 22' x 10.25' (6.7m x 3m) SAG Mill with 3,300 HP (2463 kW) ABB LSS Synchronous Motor with ACS 6,000 VFD & Liners & Liner Handler
Mills and GMDs Maarten van de Vijfeijken* looks at large, larger and the largest units in grinding ore T he gearless motor (also called wrap-around motor or ring motor) is a very large synchronous motor. The poles of the motor are directly installed on a pole flange on the mill shell: this means the mill body becomes the rotor. The stator of the
SAG and AG Mills operate by lifting ore/grinding media and dropping it on the operating bed of the mill charge. High impacts from lifting ore and media promote impact breakage which is the primary mechanism for size reduction in the mill.
The power to spin the mill comes from large electric motors coupled to mill shell through a clutch and gear system. These electricity consumed by these motors is the largest cost and inefficiency. ... The mill is driven by two GE horizontal synchronous variable speed motors, ... The SAG mill and all other grinding equipment is remotely ...
SAG Mill Components. Previous Next ... If the advantages of a synchronous motor are desired on any dual pinion drive application, dual synchronous motors are available to drive dual pinion gear arrangements featuring load sharing control devices. These continuously monitor individual mill power and adjust each motor with respect to the.other ...
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