• #### SAGMILLING.COM .:. About Us

The principal behind SAGMILLING.COM is Alex G Doll Consulting, Ltd., a consultancy involved in circuit design consulting, test program development & supervision, mill audits, geometallurgy programs and a variety of other servs in support of feasibility studies, design projects and mill

• #### Alex G Doll Consulting Ltd

email: [email protected] Due-diligence and third-party grinding circuit design checks example. For operators, courses on operating SAG & ball mill circuits example; For plant design, courses on power-based modelling & sizing of SAG & ball mill circuits example;

• #### Alex Doll Principal Consultant Alex G Doll Consulting

SAG Mill power draw models are used in mill design and grinding circuit modelling to predict how much power will be consumed by a particular mill geometry and operating configuration. This will compare SAG mill models by Morrell, Loveday (using "Power Numbers" published by Barratt) and Austin against several published mill surveys.

• 职业: Consultant at SAGMILLING.COM
• #### alex doll grinding circuit sag ball mill calculations

Sep 19, 2013 grinding circuit in the form of variable speed mill motor and new cyclones. . While we do our best to identify and calculate all the other cost items of a .. Brad Ricks, Brass Engineering International, Alex Doll, Alex G Doll .. models for SAG mill, ball mill, cyclone, conveyor, thickener and pressure filter were

• 9.4/10(538)
• #### Ball Mill Efficiency Calculations

Alex doll grinding circuit sag ball mill calculations. A simple one ball mill w grinding classification circuits robertd 2018-06 i support the explanation of of alex doll calculate sagball mill circulating load calculate sag ball mill circulating load is a formula that allows you to calculate the

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• #### Method of assessing ball mill health SAGMILLING.COM

Ball mill grinding efficiency 95.0% = (54 ÷ 64). Benchmark result A ball mill grinding efficiency above 80% is considered “good”; the measured efficiency of 95% is “very good”. This suggests that the ball mill is functioning well, and would not see any substantial benefit from further optimization. DISCUSSION

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• #### C O N S U L T I N G L T D TECHNICAL MEMORANDUM

Alex G. Doll C O N S U L T I N G L T D TECHNICAL MEMORANDUM November 28, 2019 TO: UBC MINE331 CLASS FROM: ALEX DOLL, ALEX G DOLL CONSULTING LTD. SUBJECT: SAG MILL + BALL MILL CIRCUIT SIZING Summary: Most large tonnage mineral processing facilities consist of a primary SAG milling and secondary ball milling grinding circuit.

• #### Method of assessing ball mill health SAGMILLING.COM

Ball mill grinding efficiency 95.0% = (54 ÷ 64). Benchmark result A ball mill grinding efficiency above 80% is considered “good”; the measured efficiency of 95% is “very good”. This suggests that the ball mill is functioning well, and would not see any substantial benefit from further optimization. DISCUSSION

• #### alex doll grinding circuit sag ball mill calculations

Sep 19, 2013 grinding circuit in the form of variable speed mill motor and new cyclones. . While we do our best to identify and calculate all the other cost items of a .. Brad Ricks, Brass Engineering International, Alex Doll, Alex G Doll .. models for SAG mill, ball mill, cyclone, conveyor, thickener and pressure filter were

• #### Power-based grinding models for design and geometallurgy

Oct 13, 2013· ball mill CF factors, geometallurgy and sampling an orebody. Alex D. 10:30-11:00 Coffee break AM 11:00-12:30 Mill power draw models for ball mills and SAG mills. Alex D. 12:30-13:30 Lunch 13:30-15:00 (tutorial) Example calculation in the SAGMILLING.COM software; use a pre-loaded set of test results to run a mill sizing exercise using the Bond

• #### Ball Mill Efficiency Calculations

Alex doll grinding circuit sag ball mill calculations. A simple one ball mill w grinding classification circuits robertd 2018-06 i support the explanation of of alex doll calculate sagball mill circulating load calculate sag ball mill circulating load is a formula that allows you to calculate the

• #### Alex Doll Grinding Circuit fundusze-luksemburg

Alex doll grinding circuit sag ball mill calculations. Sag mill design calculations grinding mill china ball mill power calculations based on bond index alex doll grinding circuit sag ball mill calculations datasets suitable for a bond index based the secondary ball mills authors alex doll

• #### Sag Ubc Alex Doll Mill (Grinding) Industries Prueba

Alex G. Doll C O N S U. L T I N G. L T D. TECHNICAL MEMORANDUM February 16, 2015 TO: UBC MINE331 CLASS FROM: ALEX DOLL, ALEX G DOLL CONSULTING LTD. SUBJECT: SAG MILL + BALL MILL CIRCUIT SIZING Summary: Most large tonnage mineral processing facilities consist of a primary SAG milling and secondary ball milling grinding circuit. There are three principal methodologies for sizing SAG mills

• #### Resume of Alex G. Doll Alex G Doll Consulting Ltd

Apr 03, 2000· Experience: ALEX G. DOLL CONSULTING LTD. (2000 present) Independent consultant providing process engineering and computer consulting to the mining industry.Actively involved in technology transfer by providing short courses and guest lectures on grinding

• #### SAGMILLING.COM .:. Articles

Nov 25, 2015· JK Ball Mill Model Notes Review of the JKMRC Mineral Comminution Circuits textbook (Reference 1), and discussions with practitioners of the JKSimMet software have led to the following simplified description of the opera- tion of the JK method for modelling a ball mill.

• #### calculation of ball mill charge volume Bryan D. Hellmann

Ball Mill Presentation Scribd. Apr 22, 2009 Ball Mill Presentation Free download as PDF File (.pdf) or read online for free. Calculation Feed capacity → Mill dimensions Filling ratio (30-45%), Mill dimensions → Bulk volume of the balls ball size : D2 = k * Dp (where k

• #### bond ball mill calculations spreadsheet tripoly

Ball mill charge calculation in cement ball mill grinding media calculation the ball charge mill consists handbook for dry process plants 187 learn more technical notes 8 grinding r p king media or charge in the mill and dm is the diameter of e is a funct. A method of c alculating autogenous semi alex doll grinding circuit sag ball mill

• #### Starkey & Associates Inc. Leaders in Comminution Design

Grinding Task Specification SAG and Ball's Grinding Circuit Throughput Forecasting Mill Specification Grinding Task Mill Speed Charge GRINDING CIRCUIT CAPACITY : Mill Throughput Capacity Grinding Circuit Capacity : Assumed from Bailey et al, 2009 SAGDesign Mill Throughput Calculation Using S d-BWI when T80 ≠ 1,700 µm. Using S d-BWI from T80

• #### A comparative

Doll (Doll, 2012) considering the various power losses in the transmission system. The estimated SAG mill power includes a correction for the interstitial mill filling. In the case of the estimated ball mill power, the power was calculated using the Bond methodology. Table 4 shows the principle parameters obtained.

• #### 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

• #### principles of sag and ball mill operations

Difference Between Sag Mill vs Ball Mill mech4study S mill make use of steel balls included with some large and hard rocks for grinding. These mills utilize. Jump to content. Welcome to HIP Heavy Machinery Co., Ltd. Looking forward to your joining! principles of sag and ball mill