2011 Full rewind to ball mill, Nevada USA for ABB 2011… Tony Obrien, the Managing Director at Australian Winders Pty Ltd, provided me with the opportunity to work on large Gearless Mill Motors (GMD's) and power generation equipment in Australia and worldwide for companies including ABB, Siemens and General Electric.
use of big mill grinding circu its, where large power gearless motor drives w ith cycloconve rters in the range around 20 MW are being applied for semiautogenous (SAG) mills and re-
Concepts of Gearless Ball-Mill Drives Abstract: In the past the conventional method of driving large ball mills included some form of speed reducing gear between the higher speed driving motor and the lower speed ball mill. Process developments in the mining and cement industries have increasingly tended toward the use of ever larger ball mills ...
Grinding Mills. CITIC HIC manufacture a full range of Grinding Mills for the Mining Sector. Our largest mills has been delivered to SINO Site to date are Ø12.2m x 11m 28MW Gearless Drive AG Mills and Ø7.9m x 13.6m 2x8 MW Twin Pinion Drive Ball Mills. These mills are scheduled of start up on 2012. Our market share in China exceeds 80% with the ...
higher mill speed should always be considered when set-ting gear ratios, service factors, and motor power ratings. 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)
Gearless mill drives service inspection, improvements, remote and advanced on-demand troubleshooting at copper and gold mine companies around the world, basically assigned to the following countries: Chile, Perú, Indonesia, United States, Brazil, Dominican Republic, Sweden, etc. ... (17MW, 26 feet Ball Mills) as part of system expansion for ...
[8] Frank, W-D., Gearless drives – Experiences and new/future developments. In Proceedings of the SAG 1996 Conference, Vancouver, Canada. [9] Orser, T., Svalbonas V., Van de Vijfeijken, M., 2011. Conga: the world's first 42 foot diameter 28 mw gearless sag mill. In Proceedings of the SAG 2011 Conference, Vancouver, Canada.
In future, two gearless mill drives and Sinamics cycloconverters will be used in the new production line with one SAG mill and one ball mill. Thus, one million tons of copper concentrate, 10 000 tons of molybdenum and four million ounces of silver oxide can be mined annually – even at an altitude of around 4600 m above mean sea level.
36 x 20.5 ft (11 x 6.3 m) Unused SAG Mill with 20,100 HP Gearless Drive Manufacturer: - 10.9 x 6.2 meter shell - 20,100 HP (15,000 kW) Gearless Drive - 50 Hz ABB motor - Complete with control rooms and transformers - mill was part of a cancelled project, stored to manufacturer specifications Estim...
Gearless Warp Around SAG Mill. For almost a decade now, very good operating experiences have been gained with a total of 28 gearless ring motor drives in the cement industry, driving tube mills with diameters of 2.5 to 4 meters with drive powers ranging from 3000 to …
Minerals Industries, Inc. 240 Arch Street, P.O. Box 15312 York, Pennsylvania, USA 17405-7312 Phone: + 1 717 843 8671 Fax: +1 717 845 5154 E-mail: [email protected] Gearless Autogenous/ Semi-Autogenous Mills
Unused Fl 40 X 25 Gearless Sag Mill And. 10,000 tpd gold plant wsag ball mills, gyratory cone crushers, rock breakers more, unused 36 x 23 ag mill w1500 kw motor and 22 x 41 regrind ball mill 13,405 hp total power, unused mp1000 cone crusher, unused fl 40 x 25 gearless sag mill, and 26 x 406 ball.
814 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 43, NO. 3, MAY/JUNE 2007 Operation of High-Power Cycloconverter-Fed Gearless Drives Under Abnormal Conditions Jorge O. Pontt, Senior Member, IEEE, José P. Rodríguez, Senior Member, IEEE, Jaime C. Rebolledo, Student Member, IEEE, Kurt Tischler, and Norbert Becker Abstract—This paper presents the behavior of large power mills …
Ball Mills: 32' x 14' Hardings Koppers SAG Mill. W/ two CGE 3500 hp drives and ... mill speed 10.5-13.1 rpm, bull gear driven by 8100 kw Siemens motor, Skega ... 5 HP 316 s/steel Premier colliod mill.mfd by Premier colliod mills ltd, serial...
said it will design and supply a 42 x 25-ft (12.8 x 7.6 m), 28-MW gearless SAG mill, plus two 26 x 42-ft (7.9 x 12.8 m), 15.6-MW ball mills as well as two VTM-1500-WB Vertimills for the pro-ject. The 42-ft-diameter SAG mill, according to , will be the world's largest and the first of its kind.
Ball Mill 4' X 4' 5' X 5' 6' X 6' 7' X 7' 8' X 8' Shell Thickness 14mm 16mm 19mm 20mm 22mm. Gear Box 5" FSM 6" FSM 9" FSM 10" FSM 12" FSM. LID Size Opening 14" x 14" 15" x 15" 16" x 16" 16" x 16" 20" x 20" Shaft Size 100 mm 125 mm 150 mm 175 mm 200 mm. Motor H.P. 15 30 50 75 100 ...
Erection and Commissioning of the 3 largest gearless drive mills in the world, 1 40' SAG Mill and 2 28' Ball Mills, 1 60 X 113 NT Gyratory Crusher, 2 Raptor 1100 Cone Crushers, Conveyors and Filters. Erection nearing completion with pre comm already begun, hot commissioning in December with expected turn over in January 2014.
Gearless mill drive system (GMD) 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 (SAG), ball and autogenous (AG) mills, This 'workhorse' for grinding operations combines a robust ...
Gearless AG/SAG Mills. 36 ft. x 17 ft.-16,000 HP Gearless SAG Mill. ... Consider the possibilities: a 16,000 HP SAG mill and one 16,000 HP ball mill-38,000 tons per day; a 24,000 HP SAG mill …
Minerals Industries, Inc. 240 Arch Street, P.O. Box 15312 York, Pennsylvania, USA 17405-7312 Phone: + 1 717 843 8671 Fax: +1 717 845 5154 E-mail: [email protected] Ball Mills
22' x 41' (6.7m x 12.5m) Regrind Ball Mill With 2 X 6705 HP (5000 KW) Motors (total 13410 HP/ 10000 KW), new A M King Industries | Oroville, CA | Albert King | 530-53...
ABB Motor Gearless Mill Drive GMD System
Gearless Ball Mill Drive . UNUSED FL 40 X 25 Gearless SAG Mill And 26 X 40 UNUSED FL 40 x 25 Gearless SAG Mill and 26 x 406 Ball Mills SVEDALA Model VTM800WB Vertimill With 600 KW 805 HP Motor UNUSED ANI MINERAL PROCESSING 2175 x 43 Ball Mill 13400 HP BOLIDENALLIS CHALMERS 73m X 274m SAG Mill 96X 194EGL Wet Overflow . Get Price
requirements for a Ø 7.9m x 14.2m LG geared and gearless driven Ball Mill. In this case the GMD requires slightly less space but it does require more concrete. Refer to Figures 11 through 14 below. The actual concrete foundations for geared (Fig 13 & 14) and gearless drives (Fig 12) have also been compared (above ground level).
The raw material is lifted by the elevator to the raw material bin and then sent to the ball mill through the weighing belt machine. The material is ground i...
GMD technology for Minera ndida. ABB gearless mill drive, installed 2002 at the Minera ndida in Chile. ABB announced that it will supply a new 15.7 MW gearless mill drive (GMD) system for a 26 ft ball mill, including transformers, ring motor and a complete electrical room entirely equipped, to Minera ndida/Chile.
• 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 m.a.s.l.), ABB's GMDs are well positioned to contribute to the building of larger and ever more powerful mills. — Leading the gearless mill …
Preliminary designs exist for Gearless Svedala SAG Mills up of: 44' x 26.5' (24' EGL) @ 42,000 HP/32MW Ball Mills have studied in sizes up to: 29' x 45.5' (45' EGL) @ 32,000 HP/24MW Large Ball Mills by Size Qty HP Location Yr. 26' x 38' 2 20,770 Chile 01 24' x 36' 1 15,000 Venezuela 04 24' x 39.5' 1 17,420 Ghana 04 ...
Twiflex modular braking system ensures safety and reliability on sag ... Aug 4, 2011 ... So for the 22MW SAG mill, zenith turned to Twiflex. Twiflex has been supplying brake systems for gearless SAG and ball mill drives since 2004, and ... remote operation for inching and creeping duties through a …
china ball mill with hydraulic gearless drive. Gearless mill drivesare becoming thedrivesystem of choice on large AG, SAG ... and supervision ofhydraulicand lubrication systems for themill bearings, ...China, forgearless drivesystems to power five 40-ft-diameter autogenous ... TheLos Bronces SAG mill driveis rated at 22 MW and theball mill ...
Our largest mills has been delivered to SINO Site to date are Ø12.2m x 11m 28MW Gearless Drive AG Mills and Ø7.9m x 13.6m 2x8 MW Twin Pinion Drive Ball Mills. These mills are scheduled of …
The mills at Sentinel in Zambia are amongst the world's biggest, with 2 off 40 ft SAG mills complete with 28 MW drives, and 2 off 28 foot-ball mills with 22 ...
26ft Ball Mills of 16.4 MW commissioned in 2011. In the light of increasing interest in that technology various further Gearless Mill Drives with FCS are presently being erected or are in fabrication phase. Los Bronces suffered a Frozen Charge in their expansion plant Confluencia on 10th September 2012 at its Ball Mill …
Mining machinery mining equipmentgrinding millstonemining machinery mining equipmentgrinding millstoneOur largest mills has been delivered to sino site to date are 122m x 11m 28mw gearless drive ag mills and 79m x 136m 2x8 mw twin pinion drive ball, kennedy gearless grinding ball mill
general, the bigger the mill diameter, the lower are the mill operating and critical speeds. Thus, for larger mills the number of poles will increase. As a result, the number of poles can vary from 48 to 72 poles (Fig. 3.) with typical mill speed requirements of about 10 rpm for larger SAG mills and about 15 rpm for smaller ball mills. Figure 3.
The standard line of mills includes autogenous ( AG ) and semiautogenous ( SAG ) mills, beginning with a 6 ft x 2 ft ( 1.83 m x 0.61 m ) 25 hp ( 18.7 kW ) laboratory mill and is followed by 12 ft to 36 ft ( 3.7 m to 11 m ) diameter mills ranging in power from 150 to 20,000 hp ( 112 to 14,900 kW ).
