## An Expert System for Control of a Sag/Ball Mill Circuit

1992-8-1 It is based on defined mill operating and feed parameters, eg percentage of critical speed, ball charge, mill loading, slurry SG and liner wear. Calculations could be carried out on either of the mills installed in the plant but are specific to the Paddy's Flat SAG and ball mill combination.

get price## SAG mill ball charge determination and its influence

1990-5-24 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

get price## Operation Analysis of a SAG Mill under Different

2020-10-9 operation parameters of a SAG mill, in this paper, the discrete element method (DEM) is used to simulate the breakage process of the particles by controlling three parameters, i.e., the mill speed ratio, the mill ﬁll level ratio, and the steel ball ratio. This method simulates the particles size, mill power,

get price## Modelling SAG milling power and specific energy

2017-12-14 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.

get price## Online SAG Mill Pluse Measurement and Optimization

2007-6-30 ONLINE SAG MILL PULSE MEASUREMENT AND OPTIMIZATION. Technical Report Rajamani, Raj ; Delgadillo, Jose ; Duriseti, Vishal. The grinding efficiency of semi autogenous milling or ball milling depends on the tumbling motion of the total charge within the mill. Utilization of this tumbling motion for efficient breakage of particles depends on the

get price## Grinding Circuit Design for Adanac Moly

to include SAG and Ball milling. The hardness of each sample was measured in terms of SAG power index, SPI (for SAG grinding) and Bond Ball mill work index, BWi (for ball mill grinding). A further measure, the Minnovex crusher index, Ci was also measured for use in the CEET program to determine SAG mill feed size (Kosick and Bennett, 2001).

get price## Experimental Study of Operational Parameters on Product

procedure of the experiments is such that for the investigation of four parameters; the mill speed, the ball filling, slurry concentration and slurry filling, three parameters are kept constant

get price## Relationship among operational parameters, ore

2020-5-13 In addition, the shape of mill product particles was studied to monitor breakage events as a function of ore strength. For this purpose, the strength properties of the SAG mill feed and product were specified by different techniques, including the point load index, impact breakage parameters ( A × b ), abrasion index ( t a ), and Bond ball mill work index ( W i ).

get price## Optimum SAG Mill Discharge Density Grinding

2021-8-3 Relation between Sag mill solid and product P80! Both are dependent on feed size. Dependent on Volume % solids in SAG mill. Dependent on ball charge volume. Hardness of ore. Recirculation load. Dependent on P80% size. All other parameters are secondary. In general Sag mill solids are kept at 70% by wt. Operating grinding circuit is an art.

get price## performance parameter of ball mil

Main Technical Parameters of Ceramic Ball Mill ball mill operating parameters SAMAC Coal Surface Mining . ball mill operating parameters Description : IEEE Xplore study of the effect of the various parameters on the performance of a ball mill. Ceramic Ball Mill/Ceramic Ball Mill For Sale/Ceramic Ball

get price## SAG mill ball charge determination and its influence

1990-5-24 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

get price## Online SAG Mill Pluse Measurement and Optimization

2007-6-30 ONLINE SAG MILL PULSE MEASUREMENT AND OPTIMIZATION. Technical Report Rajamani, Raj ; Delgadillo, Jose ; Duriseti, Vishal. The grinding efficiency of semi autogenous milling or ball milling depends on the tumbling motion of the total charge within the mill. Utilization of this tumbling motion for efficient breakage of particles depends on the

get price## Codelco Andina changes the main motors of its ball

2020-2-24 Due to the great technical knowledge and safety protocols of TON 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.

get price## RoM BALL MILLS A COMPARISON WITH AG/SAG MILLING

II-314 RoM Ball mills a comparison with AG/SAG Milling Aubrey N. Mainza1 and Malcolm S. Powell 1 1Mineral Processing Research Unit, University of Cape Town, Rondebosch, 7700, South Africa

get price## Modelling SAG milling power and specific energy

2017-12-14 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.

get price## HARDNESS MODEL AND RECONCILIATION OF

These models have delivered two main hardness descriptors, the Bond work index and the SAG power index. These parameters and plant operational specifications have been used as input information to forecast, the expected throughput and ball mill product size (P80) for each block of ore. Two forecasting techniques have been used, an in house

get price## Optimum SAG Mill Discharge Density Grinding

2021-8-3 Relation between Sag mill solid and product P80! Both are dependent on feed size. Dependent on Volume % solids in SAG mill. Dependent on ball charge volume. Hardness of ore. Recirculation load. Dependent on P80% size. All other parameters are secondary. In general Sag mill solids are kept at 70% by wt. Operating grinding circuit is an art.

get price## Technical Information SMC Testing

2021-7-31 Technical Information. Information about sample size, calibration, precision and accuracy. The SMC Test® is the most widely-used comminution test in the world for AG & SAG Mills, HPGRs and Crushers. The SMC Test® was developed to provide a range of useful comminution parameters through highly controlled breakage of rock samples.

get price## Numerical prediction of wear in SAG mills based on

2018-4-15 For this work, the self-developed DEM code was used to simulate the particle motion of the milling process within the SAG mill. A standard case was performed based on the experiment, which is a wet grinding [6,64].Fig. 1 shows the virtual image of the whole 3D SAG mill. The 9.75 × 4.88 m SAG mill rotates with a constant rotation speed of 10.5 rpm.

get price## SAG mill ball charge determination and its influence

1990-5-24 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

get price## Codelco Andina changes the main motors of its ball

2020-2-24 Due to the great technical knowledge and safety protocols of TON 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.

get price## Modelling SAG milling power and specific energy

2017-12-14 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.

get price## ONLINE SAG MILL PULSE MEASUREMENT AND

2006-6-24 @article{osti_895022, title = {ONLINE SAG MILL PULSE MEASUREMENT AND OPTIMIZATION}, author = {Rajamani, Raj and Delgadillo, Jose and Duriseti, Vishal}, abstractNote = {The grinding efficiency of semi autogenous milling or ball milling depends on the tumbling motion of the total charge within the mill. Utilization of this tumbling motion for efficient breakage of particles depends on

get price## Modelling SAG milling power and specific energy

Actual comminution circuits consist in most of the cases in coarse crushing, SAG milling, pebble crushing and secondary ball milling. In these circuits the SAG mill is the largest energy consumer. In many engineering projects either a power equation and/or a specific energy equation are used for the designing of these mills but not always with

get price## Gearless Mill Drives ABB

2021-2-17 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

get price## HARDNESS MODEL AND RECONCILIATION OF

These models have delivered two main hardness descriptors, the Bond work index and the SAG power index. These parameters and plant operational specifications have been used as input information to forecast, the expected throughput and ball mill product size (P80) for each block of ore. Two forecasting techniques have been used, an in house

get price## SAG Mill Expert System Grinding Circuit

2017-10-13 SAG Mill Expert System Grinding Circuit. The original process control interface consisted of a series of stand alone 4-20 ma controllers requiring the operators to dial in set points for the numerous processing parameters. In many cases these

get price## Semi-Autogenous Wet Grinding Modeling with CFD-DEM

2021-5-1 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

get price## [PDF] TECHNICAL AND COMMERCIAL BENEFITS OF

Gearless mill drives are a well established solution for grinding applications in the minerals and mining industries. The paper describes the functionality and technical features of such drive systems as well as their advantages compared to other drive solutions. Due to the variable speed operation the grinding process can be optimized for ores with varying grinding properties.

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