main technical parameters ball mill sag

  • SAG millsMetso 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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  • Modelling SAG milling power and specific energy

     · 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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  • TECHNICAL NOTES 8 GRINDING R. P. KingMineral Tech

     · The geometry of a mill with conical ends is shown in Figure 8.6. The total volume inside the mill is given by Vm 4 D2 mL 1 2(Lc L) L 1 (Dt/Dm) 3 1 Dt/Dm (8.16) The density of the charge must account for all of the material in the mill including the media which may be steel balls in a ball mill or large lumps of ore in an

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  • Grinding Millan overview ScienceDirect Topics

    If the SAG and ball mills feed separate pump systems this is not an issue. If the two stages feed the same pump system the SAG mill usually drives the discharge arrangement. This is because the SAG mill is usually of larger diameter and may have a requirement for screening of pebbles to protect the mill discharge pumps and cyclones and to facilitate pebble crushing.

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  • Model Morrell SS SAGSAGMILLING.COM

     · This is a SAG or AG mill model that estimates the specific energy consumption (E SAG) using the equations of Morrell (2004). Testwork Required. The SMC™ test stored in the "DWT" testwork table (SMC is a Drop Weight Test). Bond ball mill work index. The method requires all the parameters of the ball mill work index test to be filled in Ball

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  • Effect of ball‐mill process on some quality parameters of

    The results obtained from the study show that ball‐mill process can be successfully modeled in the main chocolate varieties for the particle size change and moisture removal which are among the main objectives of the use of this processing step. Therefore they have potential to use in the relevant production areas.

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  • Ball Mills Industry Grinder for Mineral Processing

     · Ball Mills Capacity From 0.2-90 T/H Advantages Designed for long service life minimum maintenance can grind and homogenize mineral ores down to the nano range large volume of processing capacity Max Feeding size <25mm Discharge size 0.075-0.4mm Types overflow ball mills grate discharge ball mills Service 24hrs quotation custom made parts processing flow

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  • SAGwise™ total process control The key to efficient SAG

     · happening inside your SAG mill and with the generated mill load. SAGwise™ evolved from a clear need to overcome the obstacles of traditional thinkingand implement innovative intelligent respon-sive technology. your SAG mill. Output signals tied to the control system make the mill react to the acoustic data and other existing SAG mill

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  • Semi-Autogenous Wet Grinding Modeling with CFD-DEM

     · main motivation for this work is the need to study various technical and technological parameters the influence of which on the SAG process cannot be investigated in static modeling. 2. Materials and Methods The object of the study is a semi-autogenous grinding mill SAG

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  • Codelco Andina changes the main motors of its ball mills

     · Due to the great technical knowledge and safety protocols of Outotec in this type of work Codelco Andina invited the company to participate in the change-out of two of its 7500 and 8500 HP SAG grinding ball mill motors in the interior of its underground operation.

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  • SAGwise™ total process control The key to efficient SAG

     · happening inside your SAG mill and with the generated mill load. SAGwise™ evolved from a clear need to overcome the obstacles of traditional thinkingand implement innovative intelligent respon-sive technology. your SAG mill. Output signals tied to the control system make the mill react to the acoustic data and other existing SAG mill

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  • TECHNICAL NOTES 8 GRINDING R. P. KingMineral Tech

     · The geometry of a mill with conical ends is shown in Figure 8.6. The total volume inside the mill is given by Vm 4 D2 mL 1 2(Lc L) L 1 (Dt/Dm) 3 1 Dt/Dm (8.16) The density of the charge must account for all of the material in the mill including the media which may be steel balls in a ball mill or large lumps of ore in an

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  • Semi-Autogenous Wet Grinding Modeling with CFD-DEM

     · main motivation for this work is the need to study various technical and technological parameters the influence of which on the SAG process cannot be investigated in static modeling. 2. Materials and Methods The object of the study is a semi-autogenous grinding mill SAG

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  • Gearless Mill DrivesABB

     · Antamina Compania Minera Antamina S.A. Peru Project One SAG Mill and 3 Ball Mill Drive Systems Capacity SAG Mill 1000 t/h Ball Mills 1000 t/h Consultant Bechtel USA Mill Builder FFE Minerals USA Mill Size SAG Mill 38 feet/11 58 m Ball Mills 24 feet/7 32 m Ore processed Copper/Zinc Drive Rating SAG Mill 20 1 MW 9 23 rpm Ball Mills 11 2 MW 11 38 rpm

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  • Codelco Andina changes the main motors of its ball mills

     · Due to the great technical knowledge and safety protocols of Outotec in this type of work Codelco Andina invited the company to participate in the change-out of two of its 7500 and 8500 HP SAG grinding ball mill motors in the interior of its underground operation.

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  • Ball Mills Industry Grinder for Mineral Processing

     · Ball Mills Capacity From 0.2-90 T/H Advantages Designed for long service life minimum maintenance can grind and homogenize mineral ores down to the nano range large volume of processing capacity Max Feeding size <25mm Discharge size 0.075-0.4mm Types overflow ball mills grate discharge ball mills Service 24hrs quotation custom made parts processing flow

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  • AUTOMATION ADVANCED CONTROL EXPERT (ACE)

    • Increased SAG mill throughput by 13.5 and reduced energy consumption per tonne by 9.3 Location Minera Los Pelambres Mine • Reduced feed variability by 5.6 • Increased SAG mill throughput by 5.9 and reduced energy consumption per tonne by 5.4 SAG Mill ACE BENEFITS • Automatically account for changes in variation

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  • ONLINE SAG MILL PULSE MEASUREMENT AND

     · A 35 decrease in the SAG mill power draw from 3 908 HP to 2 526 HP (2 915 kW to 1 884 kW) was recorded. This equates to a 47 decrease in SAG unit energy consumption from 8.98 kWh/ton to 4.74 kWh/ton. A 11 decrease in SAG mill speed was observed indicating optimized ball strikes.

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  • Relationship among operational parameters ore

     · A detailed test work was carried out with an industrial semi-autogenous (SAG) mill in a copper plant in close and open circuits to specify the effects of ore characteristics and operational parameters on mill performance. In addition the shape of mill product particles was studied to monitor breakage events as a function of ore strength.

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  • Operation Analysis of a SAG Mill under Different

     · the fill level ratio and the steel ball ratio on the SAG mill. Finally through statistics and analysis of particle information and mill power under di erent conditions we analyzed the influence of three parameters on the particle fracture e ect in the SAG mill and obtained the best operating parameters of the SAG mill. 2.

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  • HPGR vs SAGGrinding Classification Circuits

     · b. The SAG- Ball mill combination works on impacting and attrition action and the particles residence time increases with its size and density combination. This will generate slimes of high density valuable mineral particle which is undesired activity and consumes unrequired energy.

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  • Inferential measurement of SAG mill parametersCORE

    Abstract. Semi-autogenous (SAG) mill total load and ball load have a marked influence on mill performance. Direct measurement of these inventories is difficult hence inferential measurement is an attractive option to open the way to their control.

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  • Relationship among operational parameters ore

     · A detailed test work was carried out with an industrial semi-autogenous (SAG) mill in a copper plant in close and open circuits to specify the effects of ore characteristics and operational parameters on mill performance. In addition the shape of mill product particles was studied to monitor breakage events as a function of ore strength.

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  • TECHNICAL NOTES 8 GRINDING R. P. KingMineral Tech

     · The geometry of a mill with conical ends is shown in Figure 8.6. The total volume inside the mill is given by Vm 4 D2 mL 1 2(Lc L) L 1 (Dt/Dm) 3 1 Dt/Dm (8.16) The density of the charge must account for all of the material in the mill including the media which may be steel balls in a ball mill or large lumps of ore in an

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  • SAG Mill Grinding Circuit Design911metallurgist

     · Restated the designed SAG mill size and operating conditions typically control circuit throughput while the ball-mill circuit installed power controls the final grind size. Aside from parameters fixed at design (mill dimensions installed power and circuit type) the major variables affecting AG/SAG mill circuit performance (throughput and grind attained) include

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  • Modelling SAG milling power and specific energy

     · 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

    Chat Online
  • Model Morrell SS SAGSAGMILLING.COM

     · This is a SAG or AG mill model that estimates the specific energy consumption (E SAG) using the equations of Morrell (2004). Testwork Required. The SMC™ test stored in the "DWT" testwork table (SMC is a Drop Weight Test). Bond ball mill work index. The method requires all the parameters of the ball mill work index test to be filled in Ball

    Chat Online
  • SAG millsMetso 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

    Chat Online
  • Modelling SAG milling power and specific energy

     · ness of the models. For a given mill to have a combination of feed size ball load mill speed and solids will represent the total load. Ball Mill SAG Mill Scw Jb Pc -6" 1" N/Nc Fresh Feed Water Water Pebble Crusher Screen Cyclones Sump Pump Fig. 1. SABC A/B milling circuit.

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  • SAG mill ball charge determination and its influence on

     · Abstract In semi-autogenous grinding (SAG) the grinding mill inventory (i.e. volume of total charge volume of ball charge etc.) is important in determining the optimum operating condition for maximum production (tph) minimum specific energy (kwh/t) or lowest cost ( /t). A two-dimensional graphical method is presented for determining the actual ball charge within the total charge when

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  • Operation Analysis of a SAG Mill under Different

     · the fill level ratio and the steel ball ratio on the SAG mill. Finally through statistics and analysis of particle information and mill power under di erent conditions we analyzed the influence of three parameters on the particle fracture e ect in the SAG mill and obtained the best operating parameters of the SAG mill. 2.

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