Collahuasi Sag Mill Failure

Causes Of High Mill Weight In The Sag Mill

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 on that machine after several years of operation.Similarly, the sossego motor for the 38 ft sag mill had not failed.It too had an abb motor and it had operated longer than the collahuasi motor.

Erection And Commissioning Issues For Large Grinding Mill

Jan 01, 2001 An overview of the equipment and design ratings of these circuits is also provided.COLLAHUASIOverviewThe Collahuasi mills were started-up in November of 1998. The site is located in the Andes Mountains at an elevation of 4300 meters. The grinding circuit includes two lines featuring one SAG mill and one ball mill for each line.

Collahuasi Magnifies Machine Learning Value Mining

Nov 20, 2017 To illustrate, for one SAG mill, the models output revealed that the optimal ball charge was 18, which differed from the 19.5 at which the SAG

Grinding Mill Foundations

Sep 23, 2014 The failure was traced to the gear forces as these matched one of the natural frequencies of the foundation piers. ... Collahuasi, Cadia or Freeport. ... The El Teniente SAG mill foundations had to be stiffened as did the stator frame to ensure there would be no vibration because the soil properties were very poor.

Benchmarking Ball Mill Power Draw Models

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

Copper Anglo American Plc

in the collahuasi mine. copper is used mainly in wire and cable, brass, tubing and pipes, air conditioning and refrigeration. Image SAG mill under construction in the new Confluencia grinding plant that forms part of the Los Bronces expansion project in Chile. Copper.

Sag Mills Archives Mineral Processing Amp Metallurgy

SAG Mill Grinding Circuit Design. AG and SAG mills are now the primary unit operation for the majority of large grinding circuits, and form the basis for a variety of circuit configurations. SAG circuits are common in the industry based on High single-line capacities leading to capital efficiency The ability to mill a broad range of ore ...

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.

Mike Wells

Advising the market on major mining losses including in relation to a furnace loss at the Koniambo nickel mine in New Caledonia and a SAG mill failure at the Collahuasi copper mine in Chile. Related content

Sag Mill Ring Gear Failure

NEWS RELEASE Kumtor Mine Ball Mill Repair and ... - Centerra Gold. Mar 6, 2008 ... SAG mill and regrind mill circuits. ... of the ball mill shell, a defect in which is believed to have contributed to the failure of the ring gear. ... mill until a new ring gear can be procured

What Is Egs Stand For In Sag Mill Power

Collahuasi Sag Mill Failure Kinderopvang Marmotje . Mill grindingWikipedia. SAG is an acronym for semi-autogenous grinding. SAG mills are autogenous mills that also use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21 .

Grinding Mills Mill Evaluation

22 x 36, 12,000 hp ball mill for Collahuasi, Chile 20 x 34, 8,500 hp ball mills for Lac-des-Iles, Canada 166 x 29, 4,500 hp ball mill for Twin Creeks, USA under sub-contract to FFE Minerals Inc. Some mills recently refurbished under the direction of Farnell-Thompson General refurbishment of SAG and ball mill

Batu Hijau Indonesia Smc Testing

Throughput decline reversed, and revenue increased by 150M through the application of SMC-Test-related technology. The Batu Hijau mine, formerly owned by Newmont but now run by Amman Minerals, is the second largest copper and gold mine in Indonesia. Since its start up in 2000 it has produced over 3.6 million tonnes of copper and 8 million ...

A Boughey Pty Ltd

Collahuasi Mine Component Failure Analysis ... Collahuasi Mine Mill Support Client Compania Minera Dona Ines de Collahuasi SCM, Chile Mill support services including inspection of damage to ball mills and provision of independent assessment report Masbate SAG Mill Replacement Shell Contract Support Client Philippine Gold Processing and ...

Chile Collahuasi Copper Mine Set For Strong 2008 Reuters

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 ...

A Novel Approach To The Geometallurgical Modelling Of

The high degree of predictive accuracy that is provided is illustrated in Figures 1-5 which show the observed and predicted specific energies of the total comminution circuit, AGSAG mill, ball ...

Polyethylene Pipeline Systems Avoiding The Pitfalls

Failure Mode II is associated with Creep, Creep Rupture and SCG. Creep is time-dependant, non-reversible deformation, when exposed to a constant tensile stress. Creep rupture is the terminal event of creep and is a measure of the time that a material under a constant, applied tensile load takes to fail.

Causes Of Impact Crusher Failure Crusher Mills Cone

CGM crusher grinding mining failure analysis on impact hammer crusher Impact ball mill liner wear failure analysis of key running a raymond coal mill empty cause damage Heavy Duty Jaw Crusher, will cause significant damage to the impact to eliminate the causes of failure to work out a reasonable solution to ensure

Carmen De Andacollo

Mill Equipment Treatment 55.000 tpd or 20.000.000 tpy Production 80.000 tpy avg. of fine copper over first 10 years 1.0 million ounces gold Primary crusher 60 x 89 - 800 hp SAG mill 36 x 17 EGL - 18,000 hp wrap around Pebble crushers 2 800 hp Ball mills 2 25 x 39 EGL - 19,000 hp

Characteristics Of Hard Rock Me Mining Machinery

characteristics of hard rock greenrevolution. For example, the characteristics of hard rock and hard-to-drill geology includeHalliburton designs and builds drill bits to withstand the extreme challenges posed by hard rock and hard-to-drill formationswhile delivering performance, superior ROP to dependably improve the customers return on investment.

Ramiro Diaz Per250 Perfil Profesional Linkedin

Maintenance strategies determination on mineral concentrator plant, by control of mayor components changes, measuring wear and support by condition analysis of structural and rotating equipment, primary crushers60x80, grinding SAG mill 38ft, flotation cells and mineral pipeline 400 km, contract manager of the condition monitoring service outsourcing, CAPEX management for predictive ...

Vfd Dimensioning High Altitude Mb Drive Services

Apr 14, 2020 Failure rate can be generally expressed as function of above main factors Vdc, Tvj, A Example of 6.5 kV HiPak IGBT as part of traction converter 4000 V, 80 C, 4000 masl Without any measure the mean time between failure MTBF at 4000 masl altitude would be reduced by factor 15 compared to operation at sea level.

Boron Steel Select

Boron steel select,Our company is a large-scale heavy enterprise that taking heavy mining machinery manufactory as main products and integrated with scientific research, production, and marketing. We are concentrating on producing and selling machines such as jaw crusher, cone crusher, hammer crusher, ball mill, sand maker, mobile crushing plant

A Novel Approach To The Geometallurgical Modelling Of The

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 ...

Sag Mill Pinion Failure

Link SAG Mill Girth Gear Failure Averted ... Having seen the aftermath of a ball mill shearing a pinion tooth Ill echo HeviiGuys advise. Read more. ... Tasmines Mill Mill ... for ball mill installation. Collahuasi Mine Component Failure Analysis ... Year 2012-2013. Procurement and manufacture support for replacement of SAG Mill shell.

Sag Mill Grinding Circuit Design

Jun 06, 2016 The first major commissioning failure on the SAG mill occurred during installation when the mill was inched without adequate lubricant flow, resulting in the wiping of the feed end trunnion bearing. The armature, weighing 19 tonnes, together with the top half magnet frame, were trucked two thousand kilometers to Brisbane for rewinding and repairs.

Sag Mill Discharge Screenstrommel Vs

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.

Geometallurgical Modelling Of The Collahuasi Grinding

SAG KW Ball Mill P KW Pebble Crusher P80 JKSimMet Simulation Bond Equation tph tph T80 1.-The instantaneous throughput was increased for each iteration. 2.-SAG Mill was simulated using JKSimMet. For each iteration, the SAG mill power draw, total load

Engineering And Project Management History

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. ...

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 plants showpiece is the worlds largest gearless mill drive.

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 ...

Collahuasi Chile Smc Testing

99.85 accurate throughput forecast model achieved using SMC Test. Compa a Minera Do a In s de Collahuasi SCM Collahuasi is co-owned by Anglo American plc 44, Glencore 44 and Japan Collahuasi Resources B.V. 12. It is situated in Chile and is one of the largest copper operations in the world, producing over half a million tonnes ...

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

Very Efficient Cement Grinding Plant

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How To Reduce Limestone Costs

Allocating the necessary time and resources to prevent efflorescence can make a world of difference.By doing so, you can stop efflorescence from occurring and reduce or eliminate the costs and time associated with removing this problem.How to remove efflorescence.Some of the best ways to remove efflorescence include.