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  • INSURABILITY OF LARGE GEARLESS MILL DRIVES

    1 INSURABILITY OF LARGE GEARLESS MILL DRIVES L. Bos1, *M. van de Vijfeijken2 and J. Koponen2 1Zurich Services Corporation Schaumburg, USA, IL 60196 2ABB Switzerland Ltd Segelhofstrasse 9 P Baden-Daettwil, Switzerland, CH-5401 (*Corresponding author: [email protected])

    Insurability of Large Gearless Mill Drives (GMDs)

    Sep 28, 2014· 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].

    Gearless Mill Drives EAnD

    Gearless Mill Drives Insurability of Large Gearless Mill Drives (GMDs) ABB’s and Zurich Risk Services’ concept of a 24 h repair cycle in ring motors for GMDs is reviewed. The application of this concept to winding design is shown to be counterproductive.

    Insurability Of Large Gearless Mill Drives

    Gearless mill drives go gearless bsmr-doesburgnl.Gearless drive mills and crushers insurability of large gearless mill drives gearless drive mills and crushers geared vs gearless drive solutions for grinding mills crusher, this investment is a large copper production line, and finally.Gearless mill drive optical systems lovingbirthnl.

    insurability of large gearless mill drives MC World

    Insurability Of Large Gearless Mill Drives. Insurability of large gearless mill drives.Insurers view the specific risks related to large gearless mill drive gmd mills, and why the insurability of these large mills is a significant concern to the mining industry that utilizes them, the manufacturers that design and construct them, and the insurance companies that provide coverage to the users.

    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

    REMOTE DIAGNOSTIC SERVICES FOR GEARLESS MILL DRIVES

    Gearless mill drives As was mentioned above, a gearless mill drive constitutes both an important part, but also one of the most critical elements of a concentrator or a cement plant. Their purpose is to ensure the continuous rotation of specific types of tumbling mills, more specifically autogenous grinding (AG) mills

    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. This gearless drive

    Gearless mill drives Grinding ABB

    Our GMD eliminates all mechanical components of a conventional mill drive system, such as ring-gear, pinion, gearbox, coupling, motor shaft and motor bearings: By mounting the rotor poles directly onto the mill, the mill itself becomes the rotor of the gearless motor.

    GRINDING: ABB commissions six gearless mill drives at

    Oct 29, 2019· PANAMA Commercial production of copper now underway at large open pit Cobre Panama mine. Technology leader ABB has deployed six ABB gearless mill drives at the Cobre Panama copper mine, which is located 120 km west of Panama City.. The operator is Mineria Panama S.A. Following a period of ownership transition, First Quantum Minerals Ltd, a well-established and

    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.

    insurability of large gearless mill drives MC World

    Insurability Of Large Gearless Mill Drives. Insurability of large gearless mill drives.Insurers view the specific risks related to large gearless mill drive gmd mills, and why the insurability of these large mills is a significant concern to the mining industry that utilizes them, the manufacturers that design and construct them, and the insurance companies that provide coverage to the users.

    Gearless Mill Drives Beneficiation Bulgaria

    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.

    Instability in gearless mill drive motors

    In 2006 Anglo Platinum ordered two 26-foot ball mills from FFE Minerals Vecor and two 17,5 MW gearless mill drives (GMDs) from ABB for the 600 kilo tonne per month concentrator for the Potgietersrust Platinum North expansion project. the stator and the rotor. Since very large radial magnetic forces arise if the air gap is

    ABB Library All Categories

    Insurability of large gearless mill drives. ID: CH_ATBD_SAG Conference_1, REV:-English. Paper held at SAG Conference 2011 By Lane Bos (Zurich Insurance), Maarten van de Vijfeijken (ABB) and Jari Koponen (ABB) The availability and reliability of large grinding mills and their Gearless Mill Drives (GMDs) are of paramount importance for the

    A Mechatronic Solution Design and Experience with Large

    of large gearless cycloconverter drive sys-tems for SAG-Mills has become more and more common in the recent years. Very high power ratings with excellent dynamic performance and high efficiency over a wide speed range allow advanced optimi-zation of the process. The design of such large mill drive systems requires modern

    REMOTE DIAGNOSTIC SERVICES FOR GEARLESS MILL DRIVES

    Gearless mill drives As was mentioned above, a gearless mill drive constitutes both an important part, but also one of the most critical elements of a concentrator or a cement plant. Their purpose is to ensure the continuous rotation of specific types of tumbling mills, more specifically autogenous grinding (AG) mills

    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

    GRINDING: ABB commissions six gearless mill drives at

    Oct 29, 2019· PANAMA Commercial production of copper now underway at large open pit Cobre Panama mine. Technology leader ABB has deployed six ABB gearless mill drives at the Cobre Panama copper mine, which is located 120 km west of Panama City.. The operator is Mineria Panama S.A. Following a period of ownership transition, First Quantum Minerals Ltd, a well-established and

    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. This gearless drive

    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

    Siemens updates on gearless conveyor drives from IPCC 2014

    solution for large gearless mill drives. ThyssenKrupp and Siemens supplied the 6.5 km overland conveyor to transport the copper ore from the mine to the processing plant. The conveyor has a 1,370 mm wide belt, travels at 6.2m/sec and has a design capacity of up to 5,260 t/h of ore. It features an innovative gearless drives system providing a

    Increasing availability through advanced Gearless Drive

    drives necessitate current and voltage deratings which ac-cumulate to power derating factors; e.g. of up to 0.60 for the reference project Antapaccay at 4,200 meters above sea level. GMD’s do not require such a high derating as they can be designed for such conditions in the first place. The Gearless Mill Drive system consists of the ring motor

    impact mining mill installation

    Insurability of large Gearless Mill Drives Know More. large mills, as the financial impact of a failure is proportional to the through-put of the mill. mining industry, specifically related to large GMD mill

    Instability in gearless mill drive motors

    In 2006 Anglo Platinum ordered two 26-foot ball mills from FFE Minerals Vecor and two 17,5 MW gearless mill drives (GMDs) from ABB for the 600 kilo tonne per month concentrator for the Potgietersrust Platinum North expansion project. the stator and the rotor. Since very large radial magnetic forces arise if the air gap is

    ABB Library All Categories

    Insurability of large gearless mill drives. ID: CH_ATBD_SAG Conference_1, REV:-English. Paper held at SAG Conference 2011 By Lane Bos (Zurich Insurance), Maarten van de Vijfeijken (ABB) and Jari Koponen (ABB) The availability and reliability of large grinding mills and their Gearless Mill Drives (GMDs) are of paramount importance for the

    Increasing availability through advanced Gearless Drive

    drives necessitate current and voltage deratings which ac-cumulate to power derating factors; e.g. of up to 0.60 for the reference project Antapaccay at 4,200 meters above sea level. GMD’s do not require such a high derating as they can be designed for such conditions in the first place. The Gearless Mill Drive system consists of the ring motor

    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

    A Mechatronic Solution Design and Experience with Large

    of large gearless cycloconverter drive sys-tems for SAG-Mills has become more and more common in the recent years. Very high power ratings with excellent dynamic performance and high efficiency over a wide speed range allow advanced optimi-zation of the process. The design of such large mill drive systems requires modern

    advantages of gearless drives on ball mills

    Gearless mill drives Grinding (ABB in Mining) ABB Group. ABB's Gearless mill drive system is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills

    Gearless Mill Drives Beneficiation Bulgaria

    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.

    Updates on geared vs gearless drive solutions for grinding

    World’s largest geared drive 2x8500kW Wushan, China (operating) Among the many reasons that geared drives on large SAG mills are not favoured, is due to not having an efficient variable speed drive option (60 to 80% critical speed), which is required for process reasons.

    GRINDING: ABB commissions six gearless mill drives at

    Oct 29, 2019· PANAMA Commercial production of copper now underway at large open pit Cobre Panama mine. Technology leader ABB has deployed six ABB gearless mill drives at the Cobre Panama copper mine, which is located 120 km west of Panama City.. The operator is Mineria Panama S.A. Following a period of ownership transition, First Quantum Minerals Ltd, a well-established and

    Siemens updates on gearless conveyor drives from IPCC 2014

    solution for large gearless mill drives. ThyssenKrupp and Siemens supplied the 6.5 km overland conveyor to transport the copper ore from the mine to the processing plant. The conveyor has a 1,370 mm wide belt, travels at 6.2m/sec and has a design capacity of up to 5,260 t/h of ore. It features an innovative gearless drives system providing a

    Chapter 13 Risk Insurance Free 30-day Trial Scribd

    Chapter 13 Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. asert

    Design review of Gearless Mill Drives Bopape Eng

    DESIGN REVIEW OF GEARLESS MILL DRIVE: MILL SYSTEM ANALYSIS Thulare Bopape, Hennie Klopper Anglo Technical Solutions Abstract: It has been well established that a critical component of the up-front design for large mills is a full system Finite Element Analysis (FEA), including the mill and its bearings, the motor, the foundation and the soil.

    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

    A Mechatronic Solution Design and Experience with Large

    In the mineral processing industry the use of large gearless cycloconverter drive systems for SAG-Mills has become more and more common in the recent years. Very high power ratings with excellent dynamic performance and high efficiency over a wide speed range allow advanced optimization of the process. The design of such large mill drive systems requires modern simulation tools to verify the

    Advantages of Gearless Motor Drives in Large Ore Grinding

    Using one large mill is more economical than using a number of smaller mills. This requires a very large capacity electric drive to rotate these mills. The mills themselves are large rotating cyclinders, ten to fifteen meters in diameter, grinding hundreds of tons of ore per hour.

    Dynamowerk Berlin Large Drives Applications Siemens Global

    We manufacture large electric asynchronous and synchronous motors up to 100 MW and more! We deliever our motors in all industries for applications like gearless mill drives

    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

    advantages of gearless drives on ball mills

    Gearless mill drives Grinding (ABB in Mining) ABB Group. ABB's Gearless mill drive system is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills

    gearless mill drives Archives International Mining

    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.

    Frozen charge detection and automatic loosening with

    mill load cascaded, meaning the operation is normal as expected and start-up is continued. If the actual value of the torque is still equal to the maximum value, a frozen charge condition exists and the Gearless Drive is switched off allowing the mill to safely oscillate. An alarm (via HMI) alerts the operator and informs about the cause of the

    Ball Mill Sag Mill Assembly Installation Contractors

    1 INSURABILITY OF LARGE GEARLESS MILL DRIVES L Abb. The availability and reliability of large grinding mills and their Gearless Mill Drives decisions related to the selection for installation and continued use of large mills .. The world's first 26ft diameter ball mill was equipped with a

    Instability in gearless mill drive motors

    In 2006 Anglo Platinum ordered two 26-foot ball mills from FFE Minerals Vecor and two 17,5 MW gearless mill drives (GMDs) from ABB for the 600 kilo tonne per month concentrator for the Potgietersrust Platinum North expansion project. the stator and the rotor. Since very large radial magnetic forces arise if the air gap is

    Updates on geared vs gearless drive solutions for grinding

    World’s largest geared drive 2x8500kW Wushan, China (operating) Among the many reasons that geared drives on large SAG mills are not favoured, is due to not having an efficient variable speed drive option (60 to 80% critical speed), which is required for process reasons.

    Ball Mill Commissioning Proposal

    Jan 13, 2015· 1 insurability of large gearless mill drives l Abb The world's first 26ft diameter ball mill was equipped with a 15.5 MW GMD .. important that the cold commissioning plan and the hot commissioning plan...

    A Mechatronic Solution Design and Experience with Large

    In the mineral processing industry the use of large gearless cycloconverter drive systems for SAG-Mills has become more and more common in the recent years. Very high power ratings with excellent dynamic performance and high efficiency over a wide speed range allow advanced optimization of the process. The design of such large mill drive systems requires modern simulation tools to verify the

    gear less mill drive motor working princeple

    components of grind mill and its function; crushing impact pulverizer crusher machine; reduction ratio range for 2020 top quality jaw crusher; gear less mill drive

    Increasing availability through advanced Gearless Drive

    drives necessitate current and voltage deratings which ac-cumulate to power derating factors; e.g. of up to 0.60 for the reference project Antapaccay at 4,200 meters above sea level. GMD’s do not require such a high derating as they can be designed for such conditions in the first place. The Gearless Mill Drive system consists of the ring motor

    Design review of Gearless Mill Drives Bopape Eng

    DESIGN REVIEW OF GEARLESS MILL DRIVE: MILL SYSTEM ANALYSIS Thulare Bopape, Hennie Klopper Anglo Technical Solutions Abstract: It has been well established that a critical component of the up-front design for large mills is a full system Finite Element Analysis (FEA), including the mill and its bearings, the motor, the foundation and the soil.

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