collahuasi sag mill failure

Willy Kracht

Acerca de. Chemical Engineer and Master in Extractive Metallurgy from Universidad de Chile (2004). PhD in Mining and Materials Engineering from McGill University, Canada (2008). Areas of interest: mineral processing, flotation, geometallurgy, process modelling, solar energy. Member of the Editorial Advisory Board of Minerals Engineering (since ...

Alejandro González Lagos

the sulphide have one sag mill 40 and two ball mill, ISA Mill, pebbles plant, moly plant and oxide plants, more reference and information aktogay project kazminerals …

Gas Turbines: Fundamentals, Maintenance, Inspection ...

2019-2-4 · IDC TECHNOLOGIES Worldwide Offices AUSTRALIA Telephone: 1300 138 522 • Facsimile: 1300 138 533 West Coast Office 1031 Wellington Street, West Perth, WA 6005

SAG MILLS OPTIMIZATION: IMPLEMENTATION AND …

2014-12-18 · • Antamina´sSAG mill has the worst condition of slurry evacuation in trommel: α = 222 m 3/h/m 2 • Esperanza and Escondida´sSAG mills have high values of α, but they have a screen • Trommel of 40 feet SAG mill of Collahuasi has an high value of α = 172 m 3/h/m 2. Open Pulp Free Flow by Free SAG 1011 Area, % Flow, m 3/h Area, m 2 Area ...

SAG Mill Grinding Circuit Design

2016-6-6 · 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 …

Wear and Failure Analysis of Semi-Autogenous Grinding …

2017-2-27 · The wear and failure analysis of shell liners of a grinding mill is investigated. Metallurgical and tribological studies were conducted on the worn liner of a semi-autogenous grinding mill in Chadormalu Industrial Complex. The chemical analysis, wear mechanism, microstructural variations and mechanical properties in different sections of the worn liner were evaluated using visual inspection ...

Insurability of Large Gearless Mill Drives (GMDs)

2021-10-4 · 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 foundation to support the stator. Finally you would need a few thousand tons ...

SAG MILL DISCHARGE SCREENS-TROMMEL vs. …

2013-12-22 · 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.

Mechanics of Materials-Deflection

2014-12-25 · Beams deflect (or sag) under load. Even the strongest, most substantial beam imaginable will deflect under its own weight. Under normal conditions, the actual amount of deflection in floor beams is generally un-noticeable as shown in Figure 1.

Major Mines & Projects | Collahuasi Mine

The Collahuasi district is located in Northern Chile, Tarapacá Region, and hosts large Copper-Molybdenum porphyry-type deposits: Ujina, Rosario a high sulphidation vein deposit as Rosario Oeste and a oxide copper deposit as Rosario Sur. Mineralisation at Rosario and Ujina is mainly associated with veins, especially in Rosario.

PLEASE call the storm door Solution Center at 1-800-933 …

2020-9-3 · will sag over time if the mounting surface is not sufficiently fastened to the entryway. To install the storm door, you must verify that the opening width, height and mounting surface are sufficient. 1. Measure the width at the top, middle, and bottom of the opening (Figure 2). Measure from the inside of the brick mold or exterior trim.

Antamina Copper-Zinc Mine

The concentrator has a milling rate of 70,000t/d and is the largest single-circuit SAG-milling operation in the world. The SAG mill provides feed for ball milling to produce flotation feed, with the ball mills featuring variable-speed drives to enable the mills to …

Industrial Solutions Project Brief

2018-5-9 · 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.

PROCESS CONTROL IN METALLURGICAL PLANTS – FROM …

2007-1-1 · 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 AG/SAG mill circuits is the dominant area.

Collahuasi

2021-10-6 · Collahuasi''s social investment focuses on areas such as education, local development, the promotion of tourism, conservation of heritage and the environment and the health of people where it can make a sustained contribution over time. Collahuasi Educational Foundation.

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 …

Troubleshooting roll defects

2021-11-8 · Complete pulp mills Chemical pulping Wood handling Cooking and fiber line Pulp drying and baling Chemical recovery Air emission control New value-adding processes Dissolving pulping Mechanical pulping Recycled fiber Automation for pulp Services for pulp Fiber Technology Center Pulp references Pulp news and stories

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. The mine is jointly owned by Anglo American (44%), Glencore (44%), and Japan Collahuasi Resources (12%). The operating company is …

Collahuasi Sag Mill Failure

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

Publications

2021-10-25 · Slurry Flow In Mills Grate-Pulp Lifter Discharge Systems (Part 2) A Novel Approach To The Geometallurgical Modelling Of The Collahuasi Grinding Circuit The Appropriateness Of The Transfer Size In AG And SAG Mill Circuit Design Ag SAG Mill Circuit Grinding Energy Requirement - How To Predict It From Small Diamter Drill Core Samples Using The SMC ...

A novel approach to the geometallurgical modelling of the ...

2009-10-1 · 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 ...

SKF

2019-7-14 · SKF supplied locally manufactured mill pinion assemblies including in-house designed bearing housings as well as a Taconite sealing solution to a longstanding customer in the local grinding mill sector intended for a 22x14 ft. SAG mill at a gold project in Russia.

Olympic Dam Svedala Mill | BHP

13 February 2015. On 28 January 2015 the Svedala mill, part of BHP Billiton''s Olympic Dam surface processing operations in South Australia, suffered an electrical failure and was safely placed in the maintenance position. A complete diagnostic review was undertaken and revealed damage to the motor stator coil. The repair and remediation plan ...

Literature Review: Gearless Motor Failures – A Mill Designer''s …

Major Mines & Projects | Collahuasi Mine

Ball mills

Metso Outotec has designed, manufactured and installed over 8,000 ball and pebble mills all over the world for a wide range of applications. Some of those applications are grate discharge, peripheral discharge, dry grinding, special length to diameter ratio, high temperature milling oprations and more. All equipment adheres to the applicable ...

Gearless mill drives

2021-2-16 · • 28 MW GMD for a 40'' SAG mill • 28 MW GMD for 42'' SAG mill Whether it is size or an installation at the highest altitude (4600 m.a.s.l.), ABB''s GMDs are well positioned to contribute to the building of larger and ever more powerful mills. — Leading the gearless mill drive evolution The ABB gearless mill drive (GMD) is the most powerful ...

Company and Services

It also led to the failure analyses, measurement and remedial design of many large ring motors in gearless mill drives (GMDs) including the catastrophic failure of the ABB motor at Collahuasi. These projects also offered the opportunity to measure stresses in large SAG and ball mills including those at Collahuasi and Telfer.

Analyst & Investor Presentation November 2018

2019-5-14 · • Collahuasi is located in the Region of Tarapaca in Northern Chile • The operation is located in the high Andes between 3,000 and 5,000 metres above sea level just 10km from the border with Bolivia • Our port facilities are located at Punta Patache which is close to 200km from the minesite and 70km to the south of the city of Iquique 5-

Engineering and Project Management History

2021-3-9 · 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 …