SAG MILLS OPTIMIZATION: IMPLEMENTATION AND EVALUATION …

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 27,0 Minera Los Pelambres 36 15,9 ...

Insurability Of Large Gearless Mill Drives

Collahuasi Sag Mill Failure Zazu 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.

The Siemens 42ft gearless mill drive, still an evolutionary design …

tural failure. The gap between the model and the real sys-tem is usually closed by prototype testing, however this is not an option for a 42ft Gearless Mill Drive. The ring motor is not self-supported and needs the mill to fix the rotor poles to and it needs the mill

Chile Collahuasi copper mine set for strong 2008

 · Copper's spokeswoman in Chile. 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 ...

sag mill agbau project ivory coast

Collahuasi sag mill failure - Manufacturer Of High-end ... Sag Mill Agbau Project Ivory Coast - MC Machinery sag mill agbau project ivory coast - zostanliderem.eu Mill Agbau Project Ivory Coast - gijmelbergwijkbe. ivory coast cement price grinding mill china China Grinding Mill, Twelve 7 x 24 Compeb mills grinding cement clinker to a product of 1750 type ball mill Sag Mill ...

DISEÑO DE MODELO PREDICTIVO MULTIVARIABLE PARA MOLIENDA EN COMPAÑÍA MINERA DOÑA INÉS DE COLLAHUASI

Compañía Minera Doña Inés de Collahuasi, con el objetivo de desarrollar un modelo que fuera capaz de predecir el comportamiento no lineal de la potencia de uno de los molinos SAG de CMDIC, teniendo como entradas del modelo las variables

liners increased uptime of discharge chutes at …

 · As part of the improvement efforts, the mining company contacted for the manufacturing and mounting of a new chute with four outputs for a 10’ x 11’ SAG mill. Pleased with the good results and the fact that all deadlines were met without any accidents, Doña Inés de Collahuasi soon decided to order three more chutes from for the pebble stage.

Engineering and Project Management History

Collahuasi Mine Component Failure Analysis Ball mill repair support Collahuasi Mine Mill Support Mill support services including inspection of damage to ball mills …

SAG Mill Grinding Circuit Design

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 Process and operational benefits Provides maximum throughput Provides highest availability for your grinding mill ...

(PDF) Developments in AG / SAG mill modelling

PDF | On Sep 1, 2001, S. Morrell and others published Developments in AG / SAG mill modelling | Find, read and cite all the research you need on ResearchGateThe so-called variable rates model ...

Olympic Dam grinding mill breaks down

BHP's Olympic Dam mine has been hit again, with a mill breakdown setting back production on site. The Svedala mill, which is the largest of the three on site, suffered an electrical failure late ...

UPDATE 1-Chile Collahuasi to boost '08 copper output 20 …

 · 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 ...

Machinery Failure – Gilmore Engineers Pty Ltd

SAG Mill Bearing Failure Both main bearings on a SAG Mill at a cement factory suffered a catastrophic failure. In addition to analysing data on the service life of the bearings, our engineer inspected the SAG Mill and the failed bearings.

Collahuasi Copper Mine, Northern Chile

 · Collahuasi copper mine is situated in northern Chile, about 180km southeast of the port of Iquique, at an altitude of 4,400m. Run-of-mine sulphide ore enters the primary gyratory crusher prior to transport to two parallel grinding circuits, each consisting of a SAG mill ...

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

Insurability of Large Gearless Mill Drives (GMDs)

 · Let us hope not because the original Collahuasi and Antamina SAG mill stators most likely would still be operating had they been wound with the type of VPI parallel windings used by Siemens. In this post, we review the new 24 h repair criterion proposed in [5] and how it applies to winding design.

ARE SAG MILLS LOSING MARKET CONFIDENCE?

AG/SAG mill based circuits and this has impacted on the ability of companies to obtain funding. Bailey et al. (2009) published guidelines on the use of typical SAG mill-based circuit design methods, with particular focus on the use (and misuse) of JKSimMet.

luis_magne.pdf | Mill (Grinding) | Industrial Equipment

Mill SAG Plant C.M.D.I. Collahuasi Minera Los Pelambres Minera Escondida Minera Antamina C.M.D.I. Collahuasi Minera Esperanza Trommel's Dimension Diameter, feet Diameter, feet 32 14,4 36 15,9 38 20,3 38 15,9 40 16,5 40 15,4 Long, feet 13,6 16,4 11,2 ...

Geometallurgical Modelling of the Collahuasi Grinding Circuit for …

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 3.

Collahuasi sag mill failure

collahuasi sag mill failure OS 2015 123 COLLAHUASI MOLINO SAG REV 03 , Feb 11, 2016OS 2015 123 COLLAHUASI MOLINO SAG REV 03 Eduardo Barrales Abt Subscribe Subscribed Unsubscribe 13 13, Contactar al proveedor JUAN CARLOS

Major Mines & Projects | Chuquicamata Mine

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.

copper

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.

Literature Review: Gearless Motor Failures – A Mill …

 · 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 on that

Mike Wells

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 Case review English courts not the appropriate forum to ...

Collahuasi Sag Mill Failure

collahuasi sag mill failure; Ball Mill Design, Sag Mill And Ball Mill Difference, cadia hill gold mine sag, causes of failures of lining line of ball mill of click here to chat online. manufacturer coal roadheader . Read More SAG Mill Success—Start with the Basics

Collahuasi magnifies machine learning value

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).

Semi-autogenous grinding (SAG) mill liner design and development

MINERALS & METALLURGICAL PROCESSING 121 Vol. 24, No. 3 • August 2007INVITED FEATURE Semi-autogenous grinding (SAG) mill liner design and development D. Royston Principal, Royston Process Technology Pty Ltd., Brisbane, Queensland

sag mill gear failure

Cadia Girth Gear Failures 22/9/2014 Failure analysis of ball mill gears, SAG 2001 Conference, Vancouver. [2] Fresko et. al. 2004. The use of finite element analysis in the understanding of alignment and load distribution in large grinding mill gear and pinion sets.

Engineering&Project History

Collahuasi Mine Component Failure Analysis Ball mill repair support Collahuasi Mine Mill Support ... Failure review SAG Mill Gear Installation QA services Northparkes ML03 replacement Gear Technical support for purchase of new gear and pinion Crusher Failure ...