# advances in large sag and autogenous mill design

...### SAG Mill Liner Design 911 Metallurgist

Jun 06, 2016· In fully autogenous or semi-autogenous grinding the design of the discharge arrangement is all-important to successful mill operation. This applies to either diaphragm or peripheral discharge. If the discharge diaphragm does not have a large enough capacity the mill

Ask for price### advances in large sag and autogenous mill design

advances in large sag and autogenous mill design. Semi autogenous grinding (SAG) mill liner design and Download citation Semi autogenous grin SAG mill liner development draws primarily on practical experience from SAG milling operations supported by computer based modeling of charge motion in SAG mills and on established good design practice.

Ask for price### AG Autogenous & SAG Semi-Autogenous Mill Design Calculations

Apr 17, 2018· Ore Testing for AG & SAG Grinding Mill Design. The application of autogenous and semi-autogenous grinding circuits in recent years has contributed toward substantial savings in capital and operating costs compared to conventional circuits, particularly for large scale copper and molybdenum operations.

Ask for price### SAG Mill Grinding Circuit Design 911metallurgist

Jun 06, 2016· SAG Mill Design and Specification . The Kidston plant was designed to process 7500 tpd fresh ore of average hardness; but to optimise profit during the first two years of operation when softer oxide ore will be treated, the process equipment was sized to handle a throughput of up to 14 000 tpd.

Ask for price### Design Selection for Large-Scale Grinding Operations AG

Autogenous (AG) and Semi Autogenous (SAG) grinding mills are the conventional selection for large-scale grinding circuits. It is accepted that these forms of comminution are not the most energy efficient available. This efficiency combined with escalating energy prices, steel prices and the requirement to process larger, lower grade deposits has necessitated that better comminution techniques

Ask for price### SINGLE STAGE SAG/AG MILLING DESIGN Orway

SAG/AG milling option is ideal for starter projects with significant exploration and expansion potential. Currently a number of the largest SAG mills designed are installed in single stage configuration. This paper discusses the challenges associated with the process design of single stage SAG/AG milling circuits, the design flexibility required to

Ask for price### How grinding mill design changed over the last 30 years

Jun 03, 2020· Note that ball mills are heavier than SAG mills, therefore, it may be misleading to think that large SAG mill designs lead the way. Reference: Autogenous and Semiautogenous Mills, 2015 Update by F. Tozlu, M. Fresko, 2015 SAG

Ask for price### Design Selection for Large-Scale Grinding Operations AG

Autogenous (AG) and Semi Autogenous (SAG) grinding mills are the conventional selection for large-scale grinding circuits. It is accepted that these forms of comminution are not the most energy efficient available. This efficiency combined with escalating energy prices, steel prices and the requirement to process larger, lower grade deposits has necessitated that better comminution techniques

Ask for price### Autogenous Grinding & Semi Autogenous Grinding Circuits

Jul 20, 2017· ABC closed circuit, Autogenous-Ball-Mill-Crusher. Another similar technique is the ABC open circuit where the crusher product feeds the ball mill rather than the autogenous mill. Crusher product is typical feed to a ball mill using large diameter balls but not much grinding of 20-25 mm ore can be accomplished in an autogenous mill.

Ask for price### Autogenous and Semi-Autogenous Mills ScienceDirect

Jan 01, 2016· The AG/SAG mills generally receive ore directly from the crushing plants with alternative arrangements made to receive ore from a stockpile. In rare cases, the feed is directly from the mine. Schematic diagrams of a typical semi-autogenous mill with large D/L ratio and a square mill are illustrated in Figure 9.1, Figure 9.2.

Ask for price### Autogenous grinding mills (AG mills) Metso Outotec

Gearless mill drive (GMD) technology has further expanded the use of large AG milling allowing Metso Outotec to produce the world's largest SAG mill of 42’ in diameter drawing power at 28 MW. Today, Metso Outotec is the world leading supplier of gearless AG mills operating globally.

Ask for price### SAG mills Metso Outotec

Gearless mill drive (GMD) technology has further expanded the use of large SAG milling allowing Metso Outotec to produce the world's largest SAG mill of 42’ in diameter drawing power at 28 MW. Today, Metso Outotec is the world leading supplier of gearless SAG mills operating globally.

Ask for price### SINGLE STAGE SAG/AG MILLING DESIGN Orway

SAG/AG milling option is ideal for starter projects with significant exploration and expansion potential. Currently a number of the largest SAG mills designed are installed in single stage configuration. This paper discusses the challenges associated with the process design of single stage SAG/AG milling circuits, the design flexibility required to

Ask for price### AN OVERVIEW OF SINGLE STAGE AUTOGENOUS AND

5 Low ball charge SAG mill, high mill speed. (4% ball charge, 90% Nc) A cross between AG and SAG for competent, abrasive ores. As typically operated in RSA. 6 SAG mill (configurations 3, and 5 ) with recycle crusher Competent ores, better suited to coarse grind sizes as circulating loads can be high 7 SAG mills treating partially or fully

Ask for price### Advanced Simulation for Semi-Autogenous Mill Systems: A

Advanced Simulation for Semi-Autogenous Mill S ystems: A Simplified Models Approach 149 For large-scale mills, the pulp discharge flow can be determined by combining equations (4) and (5) as follows: m Q d= J (8) The calculation procedure can be transformed in an iterative numerical sequence.

Ask for price### What's the Difference Between SAG Mill and Ball Mill

Nov 26, 2019· SAG mill vs Ball mill Crushing ratio. The biggest characteristic of the sag mill is that the crushing ratio is large. The particle size of the materials to be ground is 300 ~ 400mm, sometimes even larger, and the minimum particle size of the materials to be discharged can reach 0.1 mm.

Ask for price### Improving Autogenous/Semi-Autogenous Grinding

throughput of autogenous grinding/semi-autogenous (AG/SAG) grinding mills, but also contributes other process benefits such as improved wear life and operator-friendly steady and smooth mill operation. Following its introduction in 2006, Outotec’s patented Turbo Pulp Lifter (TPL™) design has been retrofitted at existing sites and also

Ask for price### Design Selection for Large-Scale Grinding Operations AG

Autogenous (AG) and Semi Autogenous (SAG) grinding mills are the conventional selection for large-scale grinding circuits. It is accepted that these forms of comminution are not the most energy efficient available. This efficiency combined with escalating energy prices, steel prices and the requirement to process larger, lower grade deposits has necessitated that better comminution techniques

Ask for price### How grinding mill design changed over the last 30 years

Jun 03, 2020· Note that ball mills are heavier than SAG mills, therefore, it may be misleading to think that large SAG mill designs lead the way. Reference: Autogenous and Semiautogenous Mills, 2015 Update by F. Tozlu, M. Fresko, 2015 SAG Conference, Vancouver, British Columbia, September 2015; and other OEM installation lists.

Ask for price### SINGLE STAGE SAG/AG MILLING DESIGN Orway

SAG/AG milling option is ideal for starter projects with significant exploration and expansion potential. Currently a number of the largest SAG mills designed are installed in single stage configuration. This paper discusses the challenges associated with the process design of single stage SAG/AG milling circuits, the design flexibility required to

Ask for price### New composite liners for large sag mills Crown

for large sag mills As the mining industry moves to larger semi-autogenous (SAG) mills for higher productivity, Multotec is developing and applying innovative liner designs to optimise performance and wear life. Sam Hearn, Multotec’s global sales and business development manager, talks about the development. M ultotec is developing and ap-

Ask for price### A General Model for Semi-autogenous and Autogenous

autogenous (SAG) and fully-autogenous (FAG) mills. This is largely because the physical processes of breakage occurring in these mills are more complex than those in it and then use an approximate simplified form of the models to compare the performance of a typical SAG mill design (LID = 0.5) with that of a representative

Ask for price### LARGE SAG MILLS COMPOSITE LINERS Multotec

As the mining industry moves to larger semi-autogenous grinding (SAG) mills for higher productivity, Multotec is developing and applying innovative liner designs to optimise liner performance, mill efficiency and liner wear life. “Our strong analysis capabilities in the design process including discrete element analysis (DEM) and finite element analysis (FEA) allow us to continuously

Ask for price### Advanced Simulation for Semi-Autogenous Mill Systems: A

Advanced Simulation for Semi-Autogenous Mill S ystems: A Simplified Models Approach 149 For large-scale mills, the pulp discharge flow can be determined by combining equations (4) and (5) as follows: m Q d= J (8) The calculation procedure can be transformed in an iterative numerical sequence.

Ask for price### Process development testing for comminution circuit design

Nov 01, 2016· Morrell S., 2011, “Mapping Orebody Hardness Variability for AG/SAG/Crushing and HPGR Circuits,” International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Roll Technology 2011. Mosher, J., and Bigg, T., 2001, “SAG mill test methodology for design and optimization,” SAG 2001, Vol. I, pp. 348–361.

Ask for price### Difference Between Sag Mill vs Ball Mill mech4study

Oct 12, 2017· SAG is the abbreviated form for Semi-Autogenous Grinding Mill. This type of Mill is used for grinding large fragments into small pieces. Pieces are then used for further processing. The SAG mills are generally used in pre-processing of any type of material in grinding process. SAG mills are also known as first stage grinders.

Ask for price### Predicting the specific energy of autogenous and semi

Mar 01, 2004· 1.. IntroductionIt is generally recognised that the most accurate means for predicting the specific energy of an autogenous (AG)/semi-autogenous (SAG) mill circuit is to pilot the circuit using a 6 ′ × 2 ′ mill (Mosher and Bigg, 2001).However, one of the major drawbacks of this approach is that a relatively large sample is required to do so.

Ask for price### AG & SAG Mill for Mineral Processing Wet & Aerofall SAG

The SAG mill (AG mill) has a large diameter and a small length. It looks like a flat round drum. The diameter of the SAG mill is generally about three times its length. The diameter of the hollow pivots at both ends of the barrel of a SAG mill is large. This SAG mill design can facilitate large-sized materials to enter the barrel smoothly.

Ask for price### Autogenous and Semi-Autogenous Mills ScienceDirect

Jan 01, 2016· The AG/SAG mills generally receive ore directly from the crushing plants with alternative arrangements made to receive ore from a stockpile. In rare cases, the feed is directly from the mine. Schematic diagrams of a typical semi-autogenous mill with large D/L ratio and a square mill are illustrated in Figure 9.1, Figure 9.2.

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