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

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Gearless mill drives ABB

• 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

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Gearless Ball Mill Operation

Table of ContentsStructural Design of Mill and BearingsStructural Design of the BearingOperational ResultsMaintenance of “Gearless Drive” Mill The reliability of large diameter, high horsepower ball mill is paramount when large production and minimum downtime is required. The 17 ft. x 56 ft. double compartment ball mill at St. Lawrence Cement Company has the first gearless drive built in

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ABB’s new Gearless Mill Drive generation: Maintenance

Ball Mill SAG Mill Figure 2 Core pressing system with spring plate/washer and re-tightening statistics in a typical installation Access to the inside of the motor and the cooling system The easier the access to the inside of the motor is, the more convenient and efficient is the work on the motor.

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siemens/mining SIMINE Gearless Mill Drives

Whether you’re talking about SAG or ball mill, space is a sensitive subject, especially in the concentrator. That’s why we always design our SIMINE MILL Gearless Drives to combine maximum performance with limited space requirements. Suitable foundation and adequate ground conditions Since our solutions have a low motor weight, this notice-

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SIMINE Gearless mill drives Siemens

SIMINE Gearless mill drives outstanding reliability for your mine The gearless concept The gearless drive avoids any contact between the rotating mill and the static parts of the motor. This allows for contin-uous workflow without maintenance on the gears or the

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Gearless Mill Drives Beneficiation Siemens Global

SIMINE Gearless mill drives A standard of reliability and efficiency for grinding From Norway to Zambia, from Mongolia to Chile for over 30 years, mining operators all over the world have been counting on SIMINE Gearless mill drives. Their most important features include a small footprint and less weight than conventional drives.

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Gearless Drives Siemens

Utah, SAG mill and a 11,200 kW gearless drive for the El Teniente, Chile, SAG mill. In a continued call for larger, even more powerful drives, Siemens kept pace. In 1996, Freeport ordered the first gearless drive for a 38-foot SAG mill located at the company’s Grasberg plant in Indonesia.

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Sentinel: Siemens Gearless Mill Drives YouTube

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

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Increasing Availability through Advanced Gearless Drive

Siemens’ gearless drive technology of 99.46 to 99.71% as confirmed by real operational data from the Antapaccay mine in Peru. It was the first plant worldwide to use gearless drives for both applications. KEYWORDS Gearless Mill Drives, Gearless Conveyor Drives, Availability, SAG Mill, Ball Mill, Overland Conveyor, Antapaccay 15

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Concepts of Gearless Ball-Mill Drives IEEE Journals

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

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Gearless Ball Mill Operation

Table of ContentsStructural Design of Mill and BearingsStructural Design of the BearingOperational ResultsMaintenance of “Gearless Drive” Mill The reliability of large diameter, high horsepower ball mill is paramount when large production and minimum downtime is required. The 17 ft. x 56 ft. double compartment ball mill at St. Lawrence Cement Company has the first gearless drive built in

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ABB’s new Gearless Mill Drive generation: Maintenance

Ball Mill SAG Mill Figure 2 Core pressing system with spring plate/washer and re-tightening statistics in a typical installation Access to the inside of the motor and the cooling system The easier the access to the inside of the motor is, the more convenient and efficient is the work on the motor.

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advantages of gearless drives on ball mills

Ball mills gearless motor drive Conga Project, Peru. 19. Get Price. Choosing the Right Motors for your Mills SAGMILLING . SAG mills: 20% v/v ball charge, 30% v/v filling and 78% critical speed with worn liners. Ball mills: 36% v/v filling and 78% critical speed with Gearless drives.

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Gearless Drives Siemens

Utah, SAG mill and a 11,200 kW gearless drive for the El Teniente, Chile, SAG mill. In a continued call for larger, even more powerful drives, Siemens kept pace. In 1996, Freeport ordered the first gearless drive for a 38-foot SAG mill located at the company’s Grasberg plant in Indonesia.

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advantages of gearless drives on ball mills ME Mining

SIMINE Gearless Mill Drives Siemens. Find out instantly how the mill and Gearless Drives are.. Power: 24,000 kW for a 40 ft SAG mill. Power: 16,400 kW for two 26 ft . The SIMINE Gearless mill drives pump system significantly enhances concentrator productivity by eliminating the reducer gear between motor and pump and all corresponding

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(PDF) Operation of High-Power Cycloconverter-Fed Gearless

Significant energy and cost economies can be achieved with a gearless mill drive working with a ball mill in these upper power ranges. This prospect should also be of interest to the cement industry.

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Increasing Availability through Advanced Gearless Drive

Siemens’ gearless drive technology of 99.46 to 99.71% as confirmed by real operational data from the Antapaccay mine in Peru. It was the first plant worldwide to use gearless drives for both applications. KEYWORDS Gearless Mill Drives, Gearless Conveyor Drives, Availability, SAG Mill, Ball Mill, Overland Conveyor, Antapaccay 15

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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

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Ball mill introduction video YouTube

we have ball mills both dry type(used in cement grinding plant) and wet type(ore-dressing plant), pls kindly contact me if have any requirments, thank you

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advantages of gearless drives on ball mills

Ring gear drives huge grinding mill Machine Design. Following the SAG mill will be two 9,000-hp ball mills, each one 20-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.

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Reliable gearless mill drives for Toromocho mine expansion

A further gearless mill drive with 22 MW output will ensure equally efficient and reliable driving of a ball mill with an inner diameter of 28’. Gearless drive systems are distinguished by their high efficiency of up to 4% better than conventional drives, low maintenance effort and a high availability of over 99%.

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Grinding Mill Foundations eand.au

Sep 23, 2014· Most of our work since 2000 has been in developing grinding mill foundations to avoid vibration and unacceptable deflections. On a recent project for a plant in Peru, the client was told by the mill vendor that there was no need to do a systems (dynamic) analysis on the mill foundations because the mills on that project were gear driven rather than being driven by ring motors (gearless drives).

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geared vs gearless drive solutions for grinding mills

advantages of gearless drives on ball 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

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advantages of gearless drives on ball mills

Ring gear drives huge grinding mill Machine Design. Following the SAG mill will be two 9,000-hp ball mills, each one 20-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.

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Increasing Availability through Advanced Gearless Drive

Siemens’ gearless drive technology of 99.46 to 99.71% as confirmed by real operational data from the Antapaccay mine in Peru. It was the first plant worldwide to use gearless drives for both applications. KEYWORDS Gearless Mill Drives, Gearless Conveyor Drives, Availability, SAG Mill, Ball Mill, Overland Conveyor, Antapaccay 15

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gearless drive mills and gold ores

Siemens Supplies Gearless Drive Systems with 'Frozen,Sep 15, 2006· In addition, the extraction of gold, cobalt and uranium is planned For grinding of the ore, an SAG (Semi Autogenous Grinding) mill and a ball mill will be used For the two ore-grinding mills, Siemens is supplying gearless ring motor drive systems supplied with power via cycloconverters

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geared vs gearless drive solutions for grinding mills

advantages of gearless drives on ball 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

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Gearless Mill Drive Optical Systems

Gearless Mill Drives. Go gearless to meet your business objetives by exceeding standard availability targets in your grinding operations. abbs 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,...

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How Ball Mills Work (Engineering and Mining) YouTube

Learn how a ball mill works, all of its main parts and some of its design features! This 3D animated video allows you to see all the internal parts of a ball...

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Gearless Drives for Ore Conveying and Grinding Cmms

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

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Braking the Worlds Largest Ball Mills

The crushing and milling equipment selected for the PPRust North Plant is notable for its sheer size. In addition to the primary gyratory crusher, which is believed to be the biggest anywhere in the world, two 8m diameter by 11.7m long gearless ball mills, both rated at 17.5 MW have also been supplied.

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