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Literature Review: Gearless Motor Failures A Mill

Sep 10, 2014· The failure of the Collahuasi motor was catastrophic and it occurred within months of commissioning. The Collahuasi motor was for a 40 ft SAG mill. The Antamina 38 ft SAG mill was also driven by an ABB motor and the hanger plates had not failed

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Collahuasi sag mill failure Manufacturer Of High-end

Collahuasi Sag Mill Failure hopetrustcoza. collahuasi sag mill failure ninanscollege Sag Mill Pinion Failure mayukhportfoliocoin Sag Mill Pinion Failure, it is, a technical failure on its SAG mill in 2008 It was, for ball mill installation Collahuasi Mine Component Failure Get Support Online . Oline Chat

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Insurability of Large Gearless Mill Drives (GMDs)

Sep 28, 2014· Therefore, the Collahuasi and Antamina SAG mill stators would not have required replacement so early in their operational lives had ABB had used parallel windings with VPI insulation. So, is a 24 h repair cycle for relatively low frequency failures of a VPI windings more important than other design features such as lower loads in the stators

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Collahuasi Mucho más que Cobre

Collahuasi’s social investment focuses on areas such as education, local development, the promotion of tourism, conservation of heritage and the environment and the health of people where it can make a sustained contribution over time. Collahuasi Educational Foundation.

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SAG MILLS OPTIMIZATION: IMPLEMENTATION AND

Mill Capacity Open SAG Plant Diameter, feet Diameter, feet Long, feet Screen tph Wide, mm Long, mm Area, % C.M.D.I. Collahuasi 32 14,4 13,6 No 1.320 15 30

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Collahuasi, Chile SMC Testing

The ore body is classified into six so-called UGM units and the SMC Test is used extensively in describing the SAG mill hardness variability in each of these units within a time horizon of up to 5 years. The approach adopted by the Collahuasi engineers was to develop relationships between grinding circuit throughput and ore hardness and final

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Collahuasi magnifies machine learning value Mining Journal

To illustrate, for one SAG mill, the model's output revealed that the optimal ball charge was 18%, which differed from the 19.5% at which the SAG typically operated (figure 1, below). Changing

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Collahuasi Copper Mine, Northern Chile Mining Technology

Collahuasi copper mine is situated in northern Chile, about 180km southeast of the port of Iquique, at an altitude of 4,400m. The mine is jointly owned by Anglo American (44%), Glencore (44%), and Japan Collahuasi Resources (12%). The operating company is Cia. Minera Doña Ines de Collahuasi.

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Machinery Failure Gilmore Engineers Pty Ltd

Failure Analysis of a SAG Mill. Towards the end of its service life, a 34ft diameter SAG mill developed cracks in the corner weld. Our engineer inspected the mill. Finite Element Analysis (FEA) was conducted on the shell to determine the reduction in stress intensity at the repaired site. Recommendations were provided for its continuing use and

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Gearless mill drives library.e.abb

• 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

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Insurability of Large Gearless Mill Drives (GMDs)

Sep 28, 2014· Therefore, the Collahuasi and Antamina SAG mill stators would not have required replacement so early in their operational lives had ABB had used parallel windings with VPI insulation. So, is a 24 h repair cycle for relatively low frequency failures of a VPI windings more important than other design features such as lower loads in the stators

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The Siemens 42ft gearless mill drive, still an

tural failure. The gap between the model and the real sys-tem is usually closed by prototype testing, however this is The Collahuasi engineers are the professionals with the SAG-Mill GMD delivered by Siemens. The aim of the test

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SAG MILLS OPTIMIZATION: IMPLEMENTATION AND

Mill Capacity Open SAG Plant Diameter, feet Diameter, feet Long, feet Screen tph Wide, mm Long, mm Area, % C.M.D.I. Collahuasi 32 14,4 13,6 No 1.320 15 30

More

Collahuasi Copper Mine, Northern Chile Mining Technology

Collahuasi copper mine is situated in northern Chile, about 180km southeast of the port of Iquique, at an altitude of 4,400m. The mine is jointly owned by Anglo American (44%), Glencore (44%), and Japan Collahuasi Resources (12%). The operating company is Cia. Minera Doña Ines de Collahuasi.

More

Collahuasi, Chile SMC Testing

The ore body is classified into six so-called UGM units and the SMC Test is used extensively in describing the SAG mill hardness variability in each of these units within a time horizon of up to 5 years. The approach adopted by the Collahuasi engineers was to develop relationships between grinding circuit throughput and ore hardness and final

More

Collahuasi magnifies machine learning value Mining Journal

To illustrate, for one SAG mill, the model's output revealed that the optimal ball charge was 18%, which differed from the 19.5% at which the SAG typically operated (figure 1, below). Changing

More

Industrial Solutions Project Brief

ABB also provided Collahuasi with drives and ring motors for one SAG mill and two ball mills. Powerful ABB gearless drives, rated at 15.5 mega-watts each, drive two eight-meter (26 feet) diameter ball mills that grind small pieces of ore at eleven revolutions per minute. However, the plant’s showpiece is the world’s largest gearless mill drive.

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Electrical equipment for Collahuasi ABB

In 2001, ABB received an order comprising drives and ring motors for one SAG mill and two ball mills. In the same year ABB also won a contract for electrical equipment for a large-scale conveyor system, consisting of rising and downhill belts and storage facilities, where supplied five 2

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Machinery Failure Gilmore Engineers Pty Ltd

Failure Analysis of a SAG Mill. Towards the end of its service life, a 34ft diameter SAG mill developed cracks in the corner weld. Our engineer inspected the mill. Finite Element Analysis (FEA) was conducted on the shell to determine the reduction in stress intensity at the repaired site. Recommendations were provided for its continuing use and

More

(PDF) Developments in AG / SAG mill modelling

The so-called variable rates model (Morrell and Morisson, 1996) was used to simulate SAG mill performance and model parameters were fitted using data from surveys of the circuit undertaken in 2006.

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Collahuasi References Bulgaria

The Collahuasi area has a long history of commercial mining activity that dates back to 1880 with 50 years of mining of high-grade copper and silver veins. The mining company Compañía Minera Doña Inés de Collahuasi SCM started its commercial operations in 1999 and became one of the world’s biggest copper ore operations since.

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SAG Mill Grinding Circuit Design 911metallurgist

Metallurgical ContentBall Charge Motion inside a SAG MillSAG Mill OperationSemi Autogenous Design FactorsSAG Mill Operation ExampleProcess Plant DescriptionSAG Mill Design and Specification Operating Problems Since CommissioningDesign Changes and Future Operating Strategies AG and SAG mills are now the primary unit operation for the majority of large grinding circuits, and form the

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OS 2015 123 COLLAHUASI MOLINO SAG REV 03 YouTube

About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators

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Gearless mill drives library.e.abb

• 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

More