collahuasi sag mill failure

collahuasi sag mill failure

Engineering and Project Management History

SAG MILL DISCHARGE SCREENS-TROMMEL vs. VIBRATING ... After that failure, which occurred after about six or seven years, we had ... we heard this morning, is using a trommel with conveyors and a crusher. Collahuasi has a trommel and Escondida, on some of their lines, has trommels.

Collahuasi magnifies machine learning value - Mining Journal

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 ...

Montaje Molino Sag Collahuasi | Trituradora y Molinos

Minera Collahuasi Gratis Investigaciones 41 – 60. Gratuitos Documentos referente a Minera Collahuasi para … en Enero de 1994 para prestar servicios de montaje de … Molino Sag Universidad Austral de Chile Facultad de …

SAG MILL DISCHARGE SCREENS-TROMMEL vs. VIBRATING …

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

SAG MILLS OPTIMIZATION: IMPLEMENTATION AND …

Feb 07, 2017· Logistic challenge: New stage goal. The arrival of the low speed dual-pinion mill drives for Collahuasi Copper Mine, Chile Siemens Mining

Insurability of Large Gearless Mill Drives (GMDs)

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.

Montaje Molino Sag Collahuasi | Trituradora y Molinos

Feb 25, 2008· Collahuasi output slowed in early 2007 after a major SAG mill, or grinding mill, was shut for 46 days for repairs. The time taken to repair the mill, the largest of three grinding circuits at the ...

Major Mines & Projects | Chuquicamata Mine

Collahuasi Mine Component Failure Analysis Ball mill repair support ... Ball Mill Gear Failure Analysis Analysis of SAG mill motor drive failures Regrind Mill Refurbishment Project management, inspection and technical services for refurbishment of used ball mill Oceanagold (Philippines), Inc. ...

Benchmarking: Ball Mill Power Draw Models - SAGMILLING

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 ...

The arrival of Siemens low speed dual-pinion mill drives ...

SAG MILL DISCHARGE SCREENS-TROMMEL vs. VIBRATING ... After that failure, which occurred after about six or seven years, we had ... we heard this morning, is using a trommel with conveyors and a crusher. Collahuasi has a trommel and Escondida, on some of their lines, has trommels.

prof pontt collahuasi sag mill - lineco.co.za

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 ...

(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.

OS 2015 123 COLLAHUASI MOLINO SAG REV 03 - YouTube

Oct 01, 2009· Having related SAG mill throughput to SAG mill power and the ball mill circuit P 80, the data was then reduced to a series of curves representing the relationship between the SAG mill specific power consumption (S.P.C.), which is the SAG mill power draw divided by throughput, and the ball mill P 80 for each UGM. Fig. 3 shows the six resulting ...

Machinery Failure - Gilmore Engineers Pty Ltd

• SAG mill grate or trommel panel failure • Hydrocyclone failure • Degradation or failure of SAG mill pebble removal system . It is difficult to quantify the economic impact of large rock events due the widespread impacts and flow on effects across areas. However, …

SAG MILL DISCHARGE SCREENS-TROMMEL vs. VIBRATING …

What probability of failure or reliability? The Rosario Open Pit has a history of failure, poor quality rocks and high pore pressures. It was decided to deepen the pit below the programmed design to test the practicality of different design approaches, which if successful, could be used to improve the economics of mining at Collahuasi.

Collahuasi, Chile - SMC Testing

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 ...

collahuasi sag mill failure in portugal

The mill employs two 32-ft SAG mills feeding a complex arrangement of rod and ball mills. A final grind size of 219 microns is achieved before the slurry is passed on to flotation. The mill head grade for sulfide processing is approximately 0.8% Cu and also contains significant amounts of molybdenum making two separate concentrates viable.

Insurability of Large Gearless Mill Drives (GMDs)

Feb 07, 2017· Logistic challenge: New stage goal. The arrival of the low speed dual-pinion mill drives for Collahuasi Copper Mine, Chile Siemens Mining

Collahuasi | References | Bulgaria

Minera Collahuasi Gratis Investigaciones 41 – 60. Gratuitos Documentos referente a Minera Collahuasi para … en Enero de 1994 para prestar servicios de montaje de … Molino Sag Universidad Austral de Chile Facultad de …

Machinery Failure - Gilmore Engineers Pty Ltd

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

The Siemens 42ft gearless mill drive, still an ...

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 ...

prof pontt collahuasi sag mill - lineco.co.za

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.

Electrical equipment for Collahuasi | ABB

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

The arrival of Siemens low speed dual-pinion mill drives ...

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.

Collahuasi: project evaluation for U.S. $ 6,500 mills ...

Benchmarking: Ball Mill Power Draw - Collahuasi. Villouta, R.M., Collahuasi: After years of operation, Proceedings of the International Autogenous and Semiautogenous Grinding Technology conference (SAG 2001), Vancouver, Canada, Pages I-31 – I-42