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Collahuasi Sag Mill Failure

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 Successstart With The Basics

SAG mill breakdowns are costly events for producers. As an example, early in 2006, Cia. Minera Do a Ines de Collahuasi had to make temporary repairs on the drive on the largest and newest of its three SAG mills at the Collahuasi copper mine in northern Chile, and then in mid-January 2007, finally began full replacement of the motor stator on ...

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

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

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.

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 ...

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.

Collahuasi Copper Mine Northern Chile Mining

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 Do a Ines de Collahuasi. Lying in an area of historical copper mining, the ...

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

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

Automation Advanced Control Expert Ace

DO A IN S DE COLLAHUASI 7 SAG MILL ACE 8 SUCCESS STORY ANTOFAGASTA PLC MINERA LOS PELAMBRES 9 THICKENER ACE 10 FLOTATION ACE 11. 3 Operational manager Optimization with ACE Stabilization with BrainWave DCS Control system Goals and limits Information and strategies Set points Process information Set points

Very Efficient Cement Grinding Plant

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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.

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 ...

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 ...

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

Design And Implementation Of Advanced Automatic

SAG Mill 1011 operation 40 x 22 feet, the largest copper SAG mill of the world, to a fully automatic SAG Mill using a multivariable control strategy instead of a rule based on expert

Postinspection Report Failure Of A Bull Gear

failure were discussed. For the remainder of this report, and in its title, I refer to the alleged failure or degradation of the bull gear as a failure for simplicity and brevity, without implying an opinion of the bull gears condition. 8. On December 23, 2010, I agreed to be retained by Hurwitz amp Fine PC for

Received February 1 2016 Accepted November 4 2016

SAG mill balls experience both significant abrasive and impact wear due to their large 75 100 mm diameters. Ball mill balls experience a greater number of impacts, but at lower magnitude than SAG mill balls, due to the smaller ball size, and smaller mill diameter. Feeds are typically highly abrasive,

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.

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

Process Control In Metallurgical Plants From An Xstrata

Jan 01, 2007 Average Std Dev. Minimum Maximum SAG Feed SAG Load mpth kPa 131.3 4 454 9.7 24 100.5 4 392 152.7 4 503 42 Figure 7 SAG Basic Feed Rate Control Early McKee, 1999. In grinding, control of AGSAG mill circuits is the dominant area.

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.

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.

Siemens Modernizes Drive System For Ore Mills In Chile

Siemens modernizes drive system for ore mills in Chile. As one of the worlds biggest copper ore operations, the Chilean mining company Compa a Minera Do a In s de Collahuasi SCM based in Las CondesChile commissioned Siemens to modernize the drive system of four of its ore mills. The mine is located in the North of Chile, around 180 ...

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

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.

Sag Mill Successstart With The Basics

SAG mill breakdowns are costly events for producers. As an example, early in 2006, Cia. Minera Do a Ines de Collahuasi had to make temporary repairs on the drive on the largest and newest of its three SAG mills at the Collahuasi copper mine in northern Chile, and then in mid-January

Collahuasi Chile Smc Testing

Leading the world in ore hardness testing. The SMC Test is the most widely-used comminution test in the world for AG amp SAG Mills, HPGRs and Crushers. It is used to design comminution plants, optimize circuit performance, forecast throughput, reduce CO 2 emissions and cut energy costs.

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

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 typically operated figure 1, below. Changing ...

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 .

Project Development South America Region

Jan 01, 2011 second SAG mill and a fourth ball mill to increase throughput Capacity expanded 38 from current 94ktpd to 130ktpd Indicative capital cost US1.3 billion 100 Over 4,900 construction workers on project Description