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SAG MILL DISCHARGE SCREENSTROMMEL vs. VIBRATING Tony Moon, RTZ What I''d like to talk about is probably one of the nastiest bits of mill design for a grinding circuit, and that is the choice of what do you use on a SAG mill discharge? Do you use vibrating screens or trommel screens? What many of you probably don''t realize is that at
ABB also provided Collahuasi with drives and ring motors for one SAG mill and two ball mills. Powerful ABB gearless drives, rated at megawatts each, drive two eightmeter (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.
SINGLE STAGE SAG/AG MILLING DESIGN ABSTRACT Single stage semiautogenous / autogenous (S/AG) milling has become a common design for a variety of ore types with the advantages of being comparatively low capital cost and flexible for future expansion. The single stage
"Design and Implementation of Advanced Automatic Control Strategy Based on Dynamic Models for High Capacity SAG Mill" Iván Yutronic (Collahuasi)
Outotec® Grinding technologies With over 100 years experience in grinding technology, Outotec is one of the largest mill suppliers in the world. Outotec''s dedicated team of grinding specialists provide design engineering, testing and analysis in order to select the mill best suited to .
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. Services Energy
Collahuasi marzo de 2013 – mayo de 2014 1 año 3 meses. ... (SAG) plant. Model for SAG Mill, crusher and hidrocyclones have been integrated to simulate a SAG circuit. Data obtained from an industrial cooper concentrator has been used to estimate the main parameters of the dynamical models. The control strategy considers two levels ...
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 .
Semiautogenous grinding (SAG) mill liner design and development D. Royston Principal, Royston Process Technology Pty Ltd., Brisbane, Queensland, Australia Abstract SAG mill liner development draws primarily on practical experience from SAG milling operations supported by
Collahuasi copper mine is situated in northern Chile, about 180km southeast of the port of Iquique, at an altitude of 4,000m. The The mine is 44%owned by Xstrata plc (following its acquisition of Falconbridge Ltd in 2006) in joint venture with Anglo American (44%) and a Japanese consortium (12%) comprising Japan Collahuasi Resources BV, Mitsui Co. Ltd., Nippon Mining Metals Co. Ltd. and ...
Jun 25, 2019· The world''s 20 largest copper mines produce nearly 9 million metric tons of the precious metal a year, about 40 percent of the world''s total copper mine capacity. Chile and Peru, alone, account for about half of the copper mines on this list, but the does make the cut, with two mines among the top 20.
32'' x 14'' SAG Mill Engineering Support Technical support for manufacture of mill heads and trunnions. Alcoa World Alumina Australia. Mill Replacement Study Inspection and study of options for repair or replacement of mill. ... Collahuasi Mine Component Failure Analysis Ball mill repair support
large mills, as the financial impact of a failure is proportional to the throughput of the mill. Despite the occurrences of these events, as mining operations are driven by lower ore grades and the ability to continue reducing operating costs per ton, the trend for having larger .
DOÑA INÉS 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 ... 1 BrainWave was installed to control the SAG mill weight, solids percentage and ore feed tonnage, and to limit SAG mill sound emissions.
The Robotic SAG Mill Bolt Removal and Torqueing System consists of platformmounted robot outside and near the mill that is designed to remove liner bolt nuts Molinos AG/SAG molinos AG/SAG,, chile, chile, minería, molino. es el mayor proveedor, a nivel mundial, de molinos AG/SAG .
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 (), 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 ...
Sep 28, 2014· Insurability of Large Gearless Mill Drives (GMDs) admin 28 September 2014 ... 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. ... we showed that the Collahuasi failure occurred because the hanger plates ...
The design of the 40foot diameter SAG mill installed at the Cadia Gold Mine, New South Wales Australia, followed after two years of extensive ... SAG mill base power was estimated from pilot ...
Gearless Mill Drives Machinery Risk Solutions Practice 2009 Matt Dugalic, MARSH – MRSP Risk Consultant, VP Kurt Tischler Dipl.Ing., Siemens – .
The modernisation project includes two 8MW semiautogenous grinding (SAG) mills and two ball mills with dual pinion drives. The new drive systems are replacing the existing synchronous motors and direct converters for the SAG mills and the drive systems of the ball mills, which were installed by a different manufacturer.
next size Gearless Mill Drive, a 42ft mill. It is a dual design approach considering, on the one hand, the experiences Siemens made with Gearless Mill Drive (GMD) installations over the past 40 years and, on the other hand, using computerized design tools calculating the system behavior where experience does not yet exist.
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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 .
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 ...
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