properties of a sag mill

Used SAG Mills for Sale

UNUSED 40 x 25 Gearless SAG Mill and 26 x 40 6 quot Ball Mills BOLIDEN ALLIS CHALMERS 7 3m X 2 74m SAG Mill 9 6 X 19 4 EGL Wet Overflow Regrind Ball Mill 10 000 TPD Gold Plant w SAG amp Ball Mills Gyratory amp Cone Crushers Rock Breakers amp More


A RAPID SAG MILL GRINDABILITY AND MILL SIZING ANALYSIS PROGRAM ABSTRACT Engineering feasibility studies have become a significant cost in the mining industry particularly when a full stage gate approach is used A portion of this cost is also a function of the time taken to complete the

The Selection and Design of Mill Liners

The Selection and Design of Mill Liners 36ft SAG mill the number of Outer Head Liners was reduced from 36 to 18 pieces and in doing so reduced the time to replace them by 9 hours at a cost downtime saving of about U 25 000 per are outstripping the properties provided by the standard high chrome moly steels 4

Ball mill

The ball mill can grind various ores and other materials either wet or dry There are two kinds of ball mill grate type and overfall type due to different ways of discharging material Many types of grinding media are suitable for use in a ball mill each material having its own specific properties and advantages

Inferential measurement of sag mill parameters IV

The SAG mill rock charge properties SMRC and size distribution smrc are estimated by the reverse application of the SAG mill grate discharge function on the SAG mill discharge stream estimate incorporating a size distribution assumption


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SAG Ball Mill Optimization KnowledgeScape

The results in SAG Mill line 2 are even more dramatic Because of segregation on the coarse feed stockpile SAG mill 2 receives a higher percentage of coarse material The KnowledgeScape strategy s ability to maintain smooth and stable operation of the mill was more apparent when contrasted to the DCS control on the difficult line

Mill lining optimization increases wear life by 36

nbsp 0183 32 Mill lining optimization increases wear life by 36 at TISCO Special ore properties have made it very difficult for TISCO Yuanjiacun Iron Mine to find a mill lining that lasts s optimized metallic mill lining solution puts an end to years of application testing Nevertheless is continuing to improve the solution even further

SAG Mill Liners Multotec

Our SAG mill liners are custom designed to your application requirements In applications that feature large ball and feed sizes as well as with large mill diameters Multotec supplies MultoMetâ„¢ or HD MultoMetâ„¢ SAG mill liners and heavy duty grate plates Grate plates in a range of aperture sizes and configurations

SAG Mill Liner Design

To a more significant degree than in other comminution devices SAG Mill Liner Design and Configuration can have a substantial effect mill performance In general terms lifter spacing and angle grate open area and aperture size and pulp lifter design and capacity must be considered

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Mill grinding

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 The largest SAG mill is 42 12 8m in diameter powered by a 28 MW 38 000 HP motor

Performance enhancement tools for grinding mills

movement within SAG mills The concepts for operating SAG mills have been inherited almost entirely from conventional ball mills However these mills operated under a constant ball load and at a fixed speed the slurry load and properties being the main sources of concern Under these relatively stable


The Molycop range of SAG grinding balls is prepared for impact Through an innovative manufacturing process we ve produced a ball with greater impact resistance and reduced spalling compared to the standard SAG ball ready to perform in the highest impact SAG

Project Summary Taseko Mines Limited

In 2007 the first modernization phase commenced The initial phase included the construction of a 34 foot semi autogenous grinding SAG mill conversion of rod mills to ball mills and the complete replacement of the flotation recovery system with 160m3 float cells along with the addition of new mining equipment

The Selection Design and Application of Mill Liners for

gt Liner design has a significant effect on mill performance and liner life gt Engineering approaches have highlighted mill performance with mill modelling and the use of improved materials gt Liner design with the advent of large diameter SAG mills the issues of design selection monitoring and evaluation of mill performance is critical


INCREASING SAG MILL CAPACITY AT THE COPPER MOUNTAIN MINE THROUGH THE ADDITION OF A PRE CRUSHING CIRCUIT Dave Rose 1 David G Meadows2 Mike Westendorf3 1 Global Director Commissioning and Optimization USA Inc 7158 S Dr Midvale UT

SAG Mill Optimization using Model Predictive Control

exhibits many of these aspects Maintaining the SAG mill weight at the optimum value is critical for achieving maximum grind rate efficiency and mill production Powell M S van der Westhuizen A P amp Mainza A N 2009 However SAG mill weight is difficult to control as the dynamic response changes as the mill approaches maximum capacity

Optimization of the Design of SAG Mill Internals Using

Optimization of the Design of SAG Mill Internals Using High Fidelity Simulation by John A Herbst Svedala Optimization Services and Lawrence Nordell Conveyor Dynamics Inc September 2001 ABSTRACT High Fidelity Simulation of SAG milling is a technique which uses DEM CFD and FEM to

Autogenous and Semi Autogenous Mills

intermediate size ready for final grinding in a ball mill pebble mill or VERTIMILLTM Wet grinding is accomplished in a slurry of 50 to 80 percent solids AG SAG mills can accomplish the same size reduction work as two or three stages of crushing and screening a rod mill and some or all of the work of a ball mill


1 IMPROVEMENTS IN SAG MILL THROUGHPUT FROM FINER FEED SIZE AT THE NEWMONT AHAFO OPERATION Adrian Dance1 Sonny Mwansa2 Walter Valery 2 George Amonoo3 and Bryon Bisiaux3 1SRK Consulting Canada Inc 22nd Floor 1066 West Hastings Street Vancouver BC V6E 3X2 Canada

Expert mill control at AngloGold Ashanti

The ROM SAG mill circuit a brief description The typical ROM SAG mill circuit is depicted in Figure 1 The circuit is usually closed with either a screen or more commonly a cyclone The properties of the cyclone product are directly related to the properties of

Technical Program

SAG Conference 2019 Join us in Vancouver from September 22 to 26 2019 at the premier global event for Semi autogenous and High Pressure Grinding Technology


Ottawa This proved that a Bond BM Wi alone must never be used for designing a SAG mill The ratio of SAG hardness to grind from F80 152 mm to T80 1 7 mm divided by the Bond ball mill work index was defined as a key factor in the design of a new SAG ball mill circuit