### The Benefits of Using SmartEar™at Pueblo Viejo - CEEC ...

Volume Title: 12th Mill Operators' Conference 2014 Semi-autogenous grinding (SAG) mill control is complex and depends on many dynamic process variables. Good control strategies ensure that a mill is operating as close to optimal as possible, resulting in significant economic benefits to an operation.

### BrainWave: Control solutions for SAG mills - ANDRITZ

BrainWave Control solutions for SAG mills. 02 The solution: Measure. Control. And profit. BrainWave SAG mill is a unique control package using patented model-based predictive adaptive control technology. It is well known within the mining industry that effective grinding in a SAG mill depends

### TECHNICAL NOTES 8 GRINDING R. P. King

dimensions of the lifters control the tumbling action of the media. ... LG A mill power equation for SAG mills. Minerals and Metallurgical Processing. Feb 1990 pp57-62. ... Let VB be the volume of steel balls in the mill, VMed be the volume of autogenous media and VS the volume of slurry. VB Jb(1 E)Vm VS

### Using Fuzzy Control to Optimize SAG Mill Production

Using Fuzzy Control to Optimize SAG Mill Production Lynn B. Hales, KnowledgeScape Systems, a Division of EIMCO, Salt Lake City, UTAH ... fuzzy SAG mill control system. Although, while relatively unknown, fuzzy ... so sound is often used to control the mill speed. Besides sound, the mill bearing pressure can also be used to control the mill ...

### SAG Mill Control: It Shouldnt be that Hard - womp-int.com

In this case, mill speed is the primary manipulated variable used to control mill load. While there is no generic control strategy for SAG milling there is a considerable amount of reusable engineering. In contrast to an expert or black box system, the control loop approach was built using standard blocks, connected as shown.

### SAG Mill Control at Northparkes Final

SAG Mill Control at Northparkes Page: 1 SAG Mill Control at Northparkes Mines (Not So Hard After All) A. J. Thornton, Principal Process Control Engineer1 Tom Pethybridge, Production Superintendent – OPD2 Tom Rivett, Process Control Engineer2 Richard Dunn, Metallurgical Superintendent2 1.

### Grinding in Ball Mills: Modeling and Process Control

commonly used control strategies are analyzed and discussed. Keywords: Ball mills, grinding circuit, process control. I. Introduction Grinding in ball mills is an important technological process applied to reduce the size of particles which may have different nature and a wide diversity of physical, mechanical and chemical characteristics.

### Control SAG Mill sound detection - Grinding ...

Grinding & Classification Circuits. ... Sound control of a SAG mill is a subject that needs to be talked about more. I have been working on mill control, using microphones, for a good part of my career and I can say with much confidence that it works. Where I work now, Minera San Cristobal in Bolivia, we use sound control on both the SAG and ...

### Performance enhancement tools for grinding mills - SAIMM

The load level and composition by percentage volume of total mill volume may be determined through the use of mill noise (see Figure 14), process data and software based on appropriate algorithms. This method of determining mill load composition, together with the software developed, has been referred to in this paper as the SAG Analyzer2. Other

### Model Predictive Control for SAG Milling in Minerals ...

Model Predictive Control for SAG Milling in Minerals Processing | 5 Model Predictive Control on a SAG Mill and Ball Mills The solution for the SAG Mill is an adaptive controller which controls mill load using direct mill weight measurement or indirectly from bearing oil pressure.

### sag mill sound control - whiterivercoc.co.za

For any particular mill filling, there is a mill speed which will maintain the setpoint sound level (and therefore grinding conditions). Advanced Control of Ball Mill Grinding Circuits The process objective of the ball mill circuit control scheme is to maximise the grinding effort applied to solids delivered by the SAG mill.

### Control Grinding Mill With Sound - spo2tu.be

Need Control The Noise Of Raymond Grinding Mill. Control sag mill sound detection grinding through continuous improvement and the use of advanced technologies like smartear, pueblo viejo are improving the control and operation of their sag mill get price precision cnc grinding services mason, ohio,.

### OUTOTEC AUTOMATION SOLUTIONS FOR GRINDING …

Ball mill Hydrocyclone SAG mill MillSense RockSense ACT GRINDING OPTIMIZATION IMPROVES PRODUCTIVITY Outotec ACT – optimize and stabilize processes Outotec ACT is an advanced process control platform for building customized control applications that enable you to stabilize and optimize everything from single-unit processes to plant-wide ...

### Listening to SAG Mill Noise Pays Off for Pueblo Viejo | E & MJ

According to the authors, through continuous improvement and the use of advanced technologies like SmartEar, Pueblo Viejo—a joint venture between Barrick (60%) and Goldcorp (40%)—is improving the control and operation of its SAG mill, resulting in reduced liner wear, more efficient mill performance and optimized energy consumption.

### SAG Mill Control: It Shouldn't be that Hard | E & MJ

SAG mill control fundamentally means managing the load in the mill by adjusting the feed rate of ore to the mill and/or manipulating the rotational speed of the mill. The best way to measure load is to mount the mill on load cells. The load cells are calibrated to measure the total weight of water, grinding media (balls) and ore in the mill ...

### SAG Mill Success—Start with the Basics - womp-int.com

Material is crushed underground, stockpiled and then conveyed to a 6.1 x 4.1-m SAG mill. It is powered by a 2.3-MW motor and runs with 8%-12% of the mill's volume filled with 125-mmdiameter steel grinding balls. Incoming ore varies in zinc and lead levels and hardness. The SAG mill therefore operates at …

### Technical Program - SAG Conference

SAG Conference 2019. Join us in Vancouver from September 22 to 26, 2019 at the premier global event for Semi-autogenous and High Pressure Grinding Technology.

### 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.

### Geomagic Control X - SAG Mill Volume in Sections - YouTube

Feb 13, 2018· Learn how to calculate a Volume at different heights using CONTROL X for Sag and Ball Mills using View Clip and Enclosed Volume option. More information at: [email protected]

### Noise monitoring for optimal mill operation - bksv.com

Noise monitoring for optimal mill operation. Mining companies around the world continue to face the challenge of increasing productivity and reducing downtime. As part of its SAG mill control system, Manta Controls developed the Manta Mic: a robust and reliable acoustic analyser that prevents mill …

### Overload Detection in Semi-Autogenous Grinding: A ...

Detecting the onset of overloading in a semi-autogenous grinding (SAG) mill is a challenging task for operators to perform due to the complex and nonlinear nature of an overload.

### Choosing a SAG Mill to Achieve Design Performance

Choosing a SAG Mill To Achieve Design Performance John Starkey1, Principal Consulting Engineer Sami Hindstrom2, Manager, Grinding Travis Orser2, Project Manager, Grinding 1 Starkey & Associates Grinding Design and Process Engineering 336 – 268 Lakeshore Rd. E. Oakville, Ontario L6J 7S4

### KnowledgeScape

SAG mill feed is at its maximum and mill sound is high; A positive set point change will be applied if all of the following conditions are true: SAG mill feed is not at its maximum; SAG Mill Water Rules. Each decision cycle the expert system calculates a change in the SAG mill water set point.

### SAG Mill - Semi-Autogenous Grinding Mill

The SAG mill and all other grinding equipment is remotely monitored and controlled via computer from a central control room. The control room operator watches four video terminals and a CCTV monitor to keep track of critical process variables impacting mill throughput.

### Optimization and Control of a Primary SAG Mill Using Real ...

Optimization and Control of a Primary SAG Mill Using Real-time Grind Measurement C.W Steyn*, K Keet**, W Breytenbach*** ... the primary mill product in an attempt to control and possibly reduce flotation feed size variability. ... The first observation from these crash stops was that the mill was being operated at very low volume fillings of

### Control optimization for a SAG mill at the Raglan Mine | BBA

Made up of metallurgists, advanced control experts, programmers, technicians and automation engineers, the BBA team proposed using fuzzy logic to stabilize SAG mill behaviour for the nickel mine. It's a technique used in artificial intelligence that requires finesse, know-how and exhaustive analyses.

### Geomagic Control X - SAG Mill Volume in Sections - YouTube

May 23, 2018· This video is unavailable. Watch Queue Queue. Watch Queue Queue

### control grinding mill with sound - giebels-advocaten.nl

Having used weight control and power draw to control Mill operations, using Mill Sound to run a mill was a new one for me. I found it unusual and not that effective.Has anyone else used that style of operation control to run their mill and did you find it more effective than the more traditional way Grinding & Classifiion Circuits . Get price

### Grinding Mill Control - Grinding & Classification Circuits ...

Having used weight control and power draw to control Mill operations, using Mill Sound to run a mill was a new one for me. I found it unusual and not that effective.Has anyone else used that style of operation control to run their mill and did you find it more effective than the more traditional way

### Model Predictive Control of SAG Mills and Flotation Circuits

MODEL PREDICTIVE CONTROL OF SAG MILLS AND FLOTATION CIRCUITS *Michael G. Forbes and Bill Gough . ANDRITZ AUTOMATION Ltd. 100 – 13700 International Place Richmond, BC V6V 2X8 Canada (*Corresponding author: [email protected]) ABSTRACT . Precise control of SAG mill loading and flotation cell level is critical to maximize production and

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