### SAG Mill Grinding Circuit Design

AG Autogenous Grinding. Previous Next. View Larger Image. Metallurgical Content ... The mill charge size distribution at the end of each eight or nine hour test run is finer in the long mill than the short mill. ... The average of all three tests gives a short mill power of 9.5 KWH per ton compared with 11.35 KWH per ton for the longer mill ...

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Apr 07, 2015· We have developed a full gold ore processing line. It is made up of our jaw crusher module, hopper/hammer mill module, and shaker table. Raw ore is .

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AG Autogenous Grinding. Previous Next. View Larger Image. Metallurgical Content ... The mill charge size distribution at the end of each eight or nine hour test run is finer in the long mill than the short mill. ... The average of all three tests gives a short mill power of 9.5 KWH per ton compared with 11.35 KWH per ton for the longer mill ...

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A Bond ball mill work index is then performed on the mill product for the design of SAG-ball mill circuits. This is important because it was found that there was a 1–1.5 kWh/t higher ball mill work index if the –3.35 mm ball mill test feed size is obtained by SAG mill grinding compared with crushing.

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PAPER 3 Comparison of Ore Hardness Measurements for Grinding Mill Design for the Tenke Project John Starkey1, Principal Consulting Engineer David Meadows2, Manager Mineral Processing Development 1 Starkey & Associates 344-115 George St. Oakville, ON L6J 0A2

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commercial grinding conditions for the test in a 0.5 m diameter SAG mill. In the 2009 database, SAG pinion energies (to grind from F80 152 mm to T80 1.7 mm) vary from 1.4 to 34 kWh/t and Bond ball mill work index values vary from 6 to 24 kW/t for the same ores. Project design tonnages varied from 200 to 150,000 t/d, SAG mill sizes varied from 10 ft

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1) Ball mill is an efficient tool for grinding many materials into fine powder. 2) The ball mill is used to grind many kinds of mine and other materials, or to select the mine 3) Ball mill is widely used in building material, and chemical industry. 4) There are two ways of grinding: the dry way and the wet way.

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MILLING CONTROL & OPTIMISATION MillSTAR. A global leader in mineral and metallurgical innovation. Due to the complex nature of milling circuits, it is often found that ... Figures 8 and 9 on the right show results from a gold plant's SAG mill achieved with MillStar's Segregated Ore Feed Controller

### Mill (grinding) - Wikipedia

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.

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### Ball Mill Design/Power Calculation

The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 and maximum 'chunk size', product size as P80 and maximum and finally the type of circuit open/closed ...

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BrainWave SAG mill led to an extra 40M USD worth of annual copper production at Escon-dida. Chart demonstrating improvements in control of mill feed rate (tons per hour) after installation of BrainWave SAG mill success stories BrainWave control Expert system control

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Jun 17, 2012· Boltprep. Gearless Sag mill running after bolt elongation checks carried out.

### Rock Crushing Rule of Thumb - Mineral Processing & Metallurgy

Metallurgical Content Crusher Selection Crusher Design Crusher InstallationCrusher CostsThe Crusher's Rock BreakersArea of Application Here is a list of Rules of Thumb often used in Rock Crushing and around Crushers: Crusher Selection For a hard rock mine application below 600 tonnes/hour, select a jaw as the primary crusher. Over 1,000 tph, select a gyratory crusher.

### Autogenous and Semi-Autogenous Mills -

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. Because of the range of mill sizes available, AG/SAG milling can often be accomplished with fewer lines than in a conventional rod mill-ball circuit. All of the above contributes to

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