Gearless mill drives ABB

2021-2-16  • 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 drive evolution The ABB gearless mill drive (GMD) is the most powerful

Gearless mill drives Grinding ABB

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, service-friendly and fit for purpose design to provide

Gearless Mill Drives Beneficiation Siemens Global

Higher productivity thanks to gearless technology In the Anglo-American Los Bronces mine, SIMINE Gearless mill drives have been implemented for the concentrator at Confluencia. SIMINE Gearless mill drives are essential pieces of equipment for the concentrator plant, contributing to the outstanding plant availability of around 95%.

SAG MILLING Gearless drive system from ABB

WESTERN AUSTRALIA Five years in storage have failed to affect the performance of the ABB gearless drive on a SAG mill at the St. Ives gold mine belonging to GOLD FIELDS of South Africa.

Commissioning Variable Speed SAG Mill Gearless Drive

2021-1-26  Table of ContentsGeneral Description of the DriveAssembling and ConstructionComponent CharacteristicsDrive Evaluation The electric operation and design features of the 11,000 H.P. variable speed SAG mill gearless drive is presented. The function of the frequency-converter, control system drive

SAG Mill Gearless Drives Go to South American

2020-4-8  Meanwhile, Siemens’ Industry Solutions Division reported it had received an order from Compañia Minera Antamina S.A. to supply gearless drive systems for a SAG mill and ball mill at the Antamina open-pit in Peru. Siemens said the award is worth approximately €20 million ($26.1 million) and is scheduled for completion in late 2010.

Gearless Drives Siemens

2019-11-18  In 1996, Freeport ordered the first gearless drive for a 38-foot SAG mill located at the company’s Grasberg plant in Indonesia. This gearless drive pro- vides an astonishing 20,400 kW of power. In 1998, Siemens supplied the first gearless drive for a 40-

Gearless Drives for Ore Conveying and Grinding

2021-2-21  Siemens, the company that introduced Gearless Mill Drives (GMD) to mining industry started up its first GMD on a ball mill in Norway in 1980. The mill and its drive system are still in service. Today, GMDs are mainly used for SAG mills between 36 and 40 feet (10.7 to 12.2 m) and ball mills from 24 to 28 feet (7.3 to 8.5 m).

GRINDING: ABB commissions six gearless mill drives

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.

TECHNICAL AND COMMERCIAL BENEFITS OF

Errath, R., 2006, “The Gearless Mill Drive, the Work Horse for SAG and Ball Mills”, SME Conference, St. Louis. Protection and Supervision Systems for Gearless Mill Drives M Ahrens

Commissioning Variable Speed SAG Mill Gearless Drive

2021-1-26  Table of ContentsGeneral Description of the DriveAssembling and ConstructionComponent CharacteristicsDrive Evaluation The electric operation and design features of the 11,000 H.P. variable speed SAG mill gearless drive is presented. The function of the frequency-converter, control system drive and lubrication systems are described. An analysis of the harmonic characteristic in the Supply

Gearless Warp Around SAG Mill

2020-12-19  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 about 5000kW. Why then did the mineral ore processing industry hesitate till 1980 to adopt this successful concept for their undisputably similar application on

SAG Mill Gearless Drives Go to South American

2020-4-8  Meanwhile, Siemens’ Industry Solutions Division reported it had received an order from Compañia Minera Antamina S.A. to supply gearless drive systems for a SAG mill and ball mill at the Antamina open-pit in Peru. Siemens said the award is worth approximately €20 million ($26.1 million) and is scheduled for completion in late 2010.

SAG MILLING Gearless drive system from ABB

In December 2001, Gold Fields acquired the St. Ives project near Kalgoorlie, and only in 2003 did the new owner decide to go ahead with the project and to install the 36-ft SAG mill and its 13.5-MW gearless mill drive at St. Ives.

Siemens modernises SAG mill gearless drive in Cadia

2021-1-14  Siemens modernises SAG mill gearless drive in Cadia Valley. Posted by Matrix on 27th March 2012 Siemens has modernised a gearless grinding mill drive at Newcrest’s Cadia Valley Operations, near Orange in New South Wales, Australia. This is the first time that a gearless grinding mill had been equipped with a Sinamics SL150 cycloconverter control.

Gearless Drives for Ore Conveying and Grinding

2021-2-21  Siemens, the company that introduced Gearless Mill Drives (GMD) to mining industry started up its first GMD on a ball mill in Norway in 1980. The mill and its drive system are still in service. Today, GMDs are mainly used for SAG mills between 36 and 40 feet (10.7 to 12.2 m) and ball mills from 24 to 28 feet (7.3 to 8.5 m).

geared vs gearless drive solutions for grinding mills

Ring gear drives huge grinding mill machine design following the sag mill will be two ,hp ball mills, each one ft in diam and a ring gear drive offers several benefits, such as simplicity, low cost, and ease of and a ring motor gearless drive, either of which wraps around the mill

GRINDING: ABB commissions six gearless mill drives

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.

gearless mill drives Archives International Mining

2021-2-23  The $1.2 billion expansion, which saw throughput rise from 60,000 t/d to 120,000 t/d, involved the addition of two new thyssenkrupp-made ball mills, with ABB providing the gearless mill drives (GMD) technology. This came on top of the 33 mills the miner already had up and running as part of the existing 60,000 t/d plant at the operation.

Ring-geared mill drives Grinding ABB

Mill application features. Frozen charge protection Detects frozen charge in the mill, minimizing equipment wear and liner replacements.; Coupling supervision Detects if a failure or slippage occurs in the couplings and stops the system in case, preventing major damages.; Stand-still detection Prevents the motors from re-starting if the mill is still rocking or moving after a stop

Gearless Warp Around SAG Mill

2020-12-19  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 about 5000kW. Why then did the mineral ore processing industry hesitate till 1980 to adopt this successful concept for their undisputably similar application on

Commissioning Variable Speed SAG Mill Gearless Drive

2021-1-26  Table of ContentsGeneral Description of the DriveAssembling and ConstructionComponent CharacteristicsDrive Evaluation The electric operation and design features of the 11,000 H.P. variable speed SAG mill gearless drive is presented. The function of the frequency-converter, control system drive and lubrication systems are described. An analysis of the harmonic characteristic in the Supply

SAG MILLING Gearless drive system from ABB

In December 2001, Gold Fields acquired the St. Ives project near Kalgoorlie, and only in 2003 did the new owner decide to go ahead with the project and to install the 36-ft SAG mill and its 13.5-MW gearless mill drive at St. Ives.

ABB gearless mill drive system to power SAG mill

Newmont Mining Corporation selects ABB to design three gearless mill drive systems for their new high-altitude copper gold project in Peru. September 1, 2010 ABB won an order from Newmont Mining Corporation to engineer three gearless mill drive (GMD) systems to be installed at the Yanacocha Minas Conga oxide copper gold project in Peru.

Siemens modernises SAG mill gearless drive in Cadia

2021-1-14  Siemens modernises SAG mill gearless drive in Cadia Valley. Posted by Matrix on 27th March 2012 Siemens has modernised a gearless grinding mill drive at Newcrest’s Cadia Valley Operations, near Orange in New South Wales, Australia. This is the first time that a gearless grinding mill had been equipped with a Sinamics SL150 cycloconverter control.

Gearless AG/SAG Mills TON Automation PDF

Gearless AG/SAG Mills 2 Pages. The sights and sounds of large grinding mills in operation are impressive to even the most seasoned mill operator. Grinding systems are a symbol of the application of brute force to extract mineral wealth from nature and are a major and critical part of any mineral processing facility. Drive control

geared vs gearless drive solutions for grinding mills

Ring gear drives huge grinding mill machine design following the sag mill will be two ,hp ball mills, each one ft in diam and a ring gear drive offers several benefits, such as simplicity, low cost, and ease of and a ring motor gearless drive, either of which wraps around the mill

SAG Milling in Australia -Revised Submission

2014-10-1  The CCV ring motor (gearless) drive is used at Cadia (20 MW) and Olympic Dam (18 MW). It has been the industry standard for SAG mills above 13 MW capacity. However, pinion systems to 8 MW per pinion and dual motor systems with quadruple pinions extend the range of gear driven mills to a theoretical limit of 32 MW. The Ernest Henry SAG mill

Current Issues on High-Power Cycloconverter fed

BACKGROUND: SEMIAUTOGENOUS GRINDING (SAG) MILL WITH A GEARLESS DRIVE Fig. 1 shows the general scheme of a mill with gearless motor drive. The rotor poles of

Insurability of Large Gearless Mill Drives (GMDs)

2014-9-28  Introduction. We have written on risk associated with large ring motors in gearless mill drives previously [1, 2, 3]. In [1], we observed that ABB and Polysius were far too confident in 2001 when they claimed that 42 and 44 ft diameter mills and ring motors posed only manageable risks and that a 44 ft mill and GMD design was ready and waiting for a purchaser [4].