Oct 29, 2019· Two 28 MW gearless mill drive systems (GMDS) are operating in the mine's 12-metre SAG mills and four 16.5 MW GMDS are employed in 26 ball mills along with associated control systems. "Gearless mill drives are the 'workhorses' for grinding operations which are at the heart of any mine.
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view moreSynchronous machines can be found wherever there is a demand for highly efficient, cost-effective, dependable machines. They are frequently used for rolling, ball and sag mills, chippers, mixers, pulp refiners, pumps, fans, and compressor (reprocating and centrifical) drives.
view more1 x FLS SAG Mill (excl. Motor/Drive) For Sale/Re-Assignment Mill Details Type of Mill FLS SAG Mill Mill Dimensions 12 192 x 7 620 mm (40 x25 ) (Diam x L) Default Mill Speed 9.31 RPM Mill Speed 7.35-9.90 RPM Liners Metal/RubberExcluded Mill Drive Motor Type Wrap Around GMD Mill Drive Motor Size 26 000 kW (34 866 hp)
view moreThe SAG mill is 9.7 m in diameter and 4.8 m long. It is equipped with two 4,500 KW COMBIFLEX drives and has a rated throughput of 930 t of ore per hour. The 7.9 m x 12.4 m ball mill is powered by a 17 MW ring motor and has a rated throughput of 980 tph.
view moresag mill drives sale - pvda-sintmichielsgestel. Learn more about 500 operating years of Siemens Gearless Mill drives. plant in Indonesia This drive provides an astonishing 20,400 kW of power In 1998, Siemens supplied the first drive for a 40-foot SAG mill at the Cadia Hill Mine in Australia The latest development is the sales release of the ...
view moreSAG Mill Components Manufacturing limitations from gear vendors determine the minimum number of pinions which can be used to drive the mill as well as the number of gear sections 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
view moreThe number of impacts in primary ball mills are far more frequent but have less magnitude than those experienced in SAG mills. The increased frequency is due to the Increase in charge volume (35 – 40% versus 5 – 10%), higher mill speeds, and the larger number of balls per unit charge weight. The lower impact forces are due to a combination ...
view moreGearless mill drives • 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.
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view moresag mill discussion forumsag mill drives sale. sag mill ore hard soft control. sale dia karnataka sag mill ore hard soft control; shakg tables for magnetite recovery, Introduction Rg gear drives huge . Outotec Grdg Mills - Outotec. Outotec Grdg Mills. Optimize grdg mill . Our state-of-the-art grdg process control . the primary grdg .
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view moresag mill drives sale - pvda-sintmichielsgestel. Learn more about 500 operating years of Siemens Gearless Mill drives. plant in Indonesia This drive provides an astonishing 20,400 kW of power In 1998, Siemens supplied the first drive for a 40-foot SAG mill at the Cadia Hill Mine in Australia The latest development is the sales release of the ...
view moreStarting as small as 13 feet (4 m) in diameter on 330 HP and as large as 24' (14.5 m) in diameter on 3,300 HP, the 911MPE Semi & Fully Autogenous Mills tumble crushed ore without iron or steel grinding media. They are used when the crushed ore pieces are hard enough to perform all the grinding. SAG mills tumble mainly ore but they use up to 15% volume of steel balls to assist .
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view moreConga: The world's first 42-foot diameter 28 MW gearless SAG mill (English - pdf - Technical publication) Copper Mountain: Overview on the grinding mills and their dual pinion mill drives (English - pdf - Technical publication) Insurability of large gearless mill drives (English - pdf - Technical publication)
view moreSAG mill is an investment that can produce handsome returns if extra production is needed or simply to give the mine the option to mill the hardest ores at design throughput rates. Typical tests required to define a hardness variability function, are given below in Figure 1.
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view moreThe SAG mill is 9.7 m in diameter and 4.8 m long. It is equipped with two 4,500 KW COMBIFLEX drives and has a rated throughput of 930 t of ore per hour. The 7.9 m x 12.4 m ball mill is powered by a 17 MW ring motor and has a rated throughput of 980 tph.
view moreGearless mill drives • 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.
view moreThe gear drives used in tube mills and rotary kilns are usually very sturdy in design and operate at low speeds. The peripheral speed in mills is normally 6 to 10 ms–1 and in kilns 0.3 to 3.0 ms–1. The main drive characteristics are: high output torque large, sometimes variable centre
view moreOct 05, 2010· has been selected to design and supply a 42ft x 25ft, (12.8m x 7.6m) 28MW gearless SAG mill, plus two 26ft x 42ft, (7.9m x 12.8m) 15.6MW ball mills and two VTM-1500-WB VERTIMILLS® for Newmont Mining's Yanacocha Conga copper-gold project in Peru. The 42ft diameter SAG mill is the world's largest and the first of its kind.
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view moreFrozen charge detection and automatic loosening with gearless mill drives (SAG Conf. 2015) Mill drives: the desire for increased power and the associated limits and conditions (SAG Conf. 2015) The engineering and process effects of choosing a motor design speed (SAG Conf. 2015)
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