sag sag mill ball size

sag sag mill ball size

SAG Mill Ball Size Evaluator Evaluation Factors ...

2013-9-8  SAG Ball consumption is “average” at 400 g/t while Ball Mill grinding media (3″ balls) usage in 550 g/t. Yet, you add steel and nothing seems to happen, tonnage is not noticeably improved. You need more tonnage and could actually use a larger/coarser transfer size from the SAG to Ball Mill.

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What's the Difference Between SAG Mill and Ball Mill ...

2019-11-26  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. The calculation shows that the crushing ratio can reach 3000 ~ 4000, while the ball mill’s ...

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Ball Size effect analysis in SAG Grinding - CEEC ...

2021-10-15  The analysis of the influence of ball sizes in SAG grinding hasn't been developed in detail by considering the effect on process parameters inside the mill, grinding efficiency or internal classification. Historically a conventional grinding reference has been made on the empirical procedure developed by Azzaroni (1980).

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What is the difference between a SAG mill and ball mill?

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%. [6] [7] The largest SAG mill is 42′ (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor. [8] A SAG mill with a 44 ...

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SAG mills - Metso Outotec

SAG milling extends itself to many applications due to the range of mill sizes available. They 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 done by a ball mill. SAG mills are also an optimum solution for wet grinding since crushing and screening in these ...

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SAG Mill Autogenous and Semi-Autogenous Mills

Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. Fuller-Traylor SAG/AG Mills range in size

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Modelling: Transfer size limits - SAGMILLING.COM

2020-3-22  The transfer size, T 80, is the characteristic size of the stream between the primary (SAG) and second (ball mill) stages of grinding.It is an important tuning

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SAG Mill Grinding Circuit Design - 911metallurgist

2016-6-6  By combining with SAG discharge and screening on the SAG discharge screens, top size control to the ball-mill circuit feed is maintained while still unloading the SAG circuit (Mosher et al, 2006). A variant of this method is to direct pebble-crushing circuit product to the ball-mill

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(PDF) Design of the biggest mill in the world

Maximum SAG mill po wer was determined by deducting the install ed ball mill pinion power of 7.95kWh/t (16,400kW) from the maximum overall circuit power of 16.7kWh/t to give 8.75kWh/t (18,060kW).

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sag mill ball size 125mm - ilconsulentenergetico.it

With high aspect ratio SAG mills total charge to ball charge ratio should be greater than 2 (up to 2.5) for a coarse mill feed (say F80 > 110 mm). If the mill feed size is fine, say 50 mm or 30 mm, then you are looking at a total charge to ball charge ratio of about 1.5-1.6.

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SAG mills - Metso Outotec

SAG milling extends itself to many applications due to the range of mill sizes available. They 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 done by a ball mill. SAG mills are also an optimum solution for wet grinding since crushing and screening in these ...

Read More
Modelling: Transfer size limits - SAGMILLING.COM

2020-3-22  The transfer size, T 80, is the characteristic size of the stream between the primary (SAG) and second (ball mill) stages of grinding.It is an important tuning

Read More
SAG Mill Grinding Circuit Design - 911metallurgist

2016-6-6  By combining with SAG discharge and screening on the SAG discharge screens, top size control to the ball-mill circuit feed is maintained while still unloading the SAG circuit (Mosher et al, 2006). A variant of this method is to direct pebble-crushing circuit product to the ball-mill

Read More
Correction of Bond Ball Mill Work Index Test for Closing ...

2018-12-7  The laboratory test work program was carried out on SAG belt cut and geo-unit samples of two BC copper-porphyry orebodies yielding an exponent of -0.56 across the range of typical ball mill particle size targets. For validation, the equation was run against African data by Levin (1989)

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sag mill ball size 125mm - ilconsulentenergetico.it

With high aspect ratio SAG mills total charge to ball charge ratio should be greater than 2 (up to 2.5) for a coarse mill feed (say F80 > 110 mm). If the mill feed size is fine, say 50 mm or 30 mm, then you are looking at a total charge to ball charge ratio of about 1.5-1.6.

Read More
(PDF) Design of the biggest mill in the world

Maximum SAG mill po wer was determined by deducting the install ed ball mill pinion power of 7.95kWh/t (16,400kW) from the maximum overall circuit power of 16.7kWh/t to give 8.75kWh/t (18,060kW).

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Power-based modelling of single-stage AG and SAG mill

other methods. The ball mill correction factor (CFnet) is empirical and one way of estimating it was presented by Amelunxen at the Procemin 2013 Short Course by Doll Amelunxen. The SGI equation uses a transfer size between a SAG and ball mill; it is proposed that a synthetic transfer size of 2100 µm be used to model single-stage SAG mills. 5.9ˇ

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Orway Mineral Consultants Canada Ltd. Mississauga, ON ...

2014-10-1  Equation 2. The approach requires the feed size to the SAG, the SAG mill product size (transfer size) and the final product size. The prediction of the SAG mill transfer size used in the formula is made by comparison with pilotplant data and operating plant data

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Model:Bond/Barratt SABC Models - SAGMILLING.COM

2020-3-22  SAG-limited circuits (where the T 80 hits the upper limit) will result in the ball mill over-grinding unless the ball mill speed is reduced to control the grind size (in the case of a variable speed mill). Ball-limited circuits (where the T 80 hits the lower limit) will result in the charge level in the SAG mill dropping until its power draw ...

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Modelling SAG milling power and specific energy ...

2015-1-1  The ball charge is a function of the bulk fraction of the SAG mill volume (Jb) occupied by balls; the ore retained in the mill is the result of the volumetric filling which depends on the ore size distribution (specially the % +6″ and the % −6″ +1″), on the rotational speed (N/Nc) and on the solid concentration by weight fraction inside ...

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AG Mill and SAG Mill - ball mills supplier

AG Mill and SAG Mill. Feeding size: ≤25mm. Capacity: 0.65-615t/h. Output size: 0.074-0.89mm. Applications: It is commonly used in the mineral processing industry and ferrous and non-ferrous metal ore and nonmetal ore processing plants. It can also be used in cement plant, refractory plant, fertilizer plant and smelting plant.

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The appropriateness of the transfer size in AG and SAG ...

The AG/SAG circuit discharge P80 is now increasingly referred to as the “Transfer Size” or T80 for short. From the literature it is apparent that in circuit design some approaches to the ...

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China Ball Mill and SAG Mill Use Grinding ball and ...

Ball Mill and SAG Mill Use Grinding ball and grinding cylpebs for Cement or Mine Grinding. Short Description: Grinding Ball size range from 12-125 mm, 45-65 HRC, 1-23 % Cr. content; Grinding Cylpeb of required sizes 45-65 HRC, 1-23 % Cr. content. The Grinding Media is produced by full-Auto casting lines, certified under international quality ...

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Modelling: Transfer size limits - SAGMILLING.COM

2020-3-22  The transfer size, T 80, is the characteristic size of the stream between the primary (SAG) and second (ball mill) stages of grinding.It is an important tuning

Read More
Power-based modelling of single-stage AG and SAG mill

other methods. The ball mill correction factor (CFnet) is empirical and one way of estimating it was presented by Amelunxen at the Procemin 2013 Short Course by Doll Amelunxen. The SGI equation uses a transfer size between a SAG and ball mill; it is proposed that a synthetic transfer size of 2100 µm be used to model single-stage SAG mills. 5.9ˇ

Read More
Correction of Bond Ball Mill Work Index Test for Closing ...

2018-12-7  The laboratory test work program was carried out on SAG belt cut and geo-unit samples of two BC copper-porphyry orebodies yielding an exponent of -0.56 across the range of typical ball mill particle size targets. For validation, the equation was run against African data by Levin (1989)

Read More
(PDF) Design of the biggest mill in the world

Maximum SAG mill po wer was determined by deducting the install ed ball mill pinion power of 7.95kWh/t (16,400kW) from the maximum overall circuit power of 16.7kWh/t to give 8.75kWh/t (18,060kW).

Read More
Freeing up milling capacity in a SAG mill ball mill ...

The throughput capacity and efficiency of a SAG mill are affected by the significant recirculated load derived from over-size discharge product (critical size “pebble” discharge) that is screened out and may be stockpiled or requires secondary crushing prior to re-introduction to the SAG mill feed. Where the SAG mill/ball mill

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Difference Between Sag Mill vs Ball Mill - mech4study

2017-10-12  1. SAG mill is the primary tool for grinding. SAG mill is used before the other mills. Ball mill is a secondary, and it is used after the SAG mill. 2. SAG mill breaks the raw material into pieces for the further grinding. Ball mill is used to grind the pieces of raw

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Changing sag mill liners type from Hi-Low to Hi-Hi at ...

2021-9-14  helps understand charge motion in SAG mills for the given liner designs and lifters, ball size and rock properties, and mill operating conditions. Based on the success of the 2-D model of the SAG mill, the 3-D model in DEM was developed. These types of models could help study charge motion, power draw, liners wear, and energy draft

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