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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

Every mining operation has a unique grinding process. has experience of over 8,000 grinding mills globally, including manufacturing and delivering the largest SAG/AG mills in the world. Our experts welcome the opportunity to assist you with circuit and circuit control design as well as start-up, operation, and optimization of your mill.

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

radial trend of mill sound and vibration energy to identify charge toe, shoulder levels, and ball-to-liner impacts for unprecedented SAG mill control, insight, and reliability.!!!!! The throughput and efficiency of a SAG mill depends on the volumetric load: An overloaded mill has reduced coarse ore breakage, as the cascading balls and rock ...

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.

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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.

SAG Mill LRS Control. The Problem Bottle Neck: Hard ore in circuit reducing throughput Major Issue No control of mill rotational speed due to old equipment and no capital expenditure Current System Control System - Mill control power to weight ratio Register for your free account. Login to continue reading ...

Advanced Control of SAG Mill Grinding Circuits. Sound is assumed to be a measure of the breakage conditions at the impact zone of balls (and to a lesser extent, rock) in the mill. High sound levels occur when the ball strike point distribution is high on the liner wall and not overlapping the mill charge toe. Low sound levels occur when the ...

OPTIMAL SAG MILL CONTROL USING VIBRATION & DIGITAL SIGNAL PROCESSING TECHNIQUES *Karl S. Gugel, Ph.D. Digital Control Lab, 4647 NW 6th St. ... However the volume of material in the mill should again be kept constant to maintain a constant flow over material through the mill and in the mill .

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.

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.

Digital Control Lab is a company that designs systems to improve the efficiency of cement and mining plants. Contact us today.

It is the sound of rising costs by the hour both from the downtime itself and from maintenance costs. Optimising the capacity of your SAG mill is crucial to avoiding downtime and liner wear and damage. With variances in mill ore feed rate, mill speed and slurry density, critical impacts can occur in your SAG mill.

SAM® 3 Sound Control Membrane. SAM® 3 is a high quality sound control sheet membrane for surfaces that require impact and audible sound reduction, in applications with and without a sound rated ceiling assembly (SRCA). How It Works.

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 ...

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: geomagic.sales.americas@3DSystems.

ACOUSTIC EMISSIONS MONITORING OF SAG MILL PERFORMANCE S.J. Spencer, J.J. Campbell, K.R. Weller and Y. Liu CSIRO Minerals, PO Box 883, Kenmore, QLD 4069, Australia

mill performance could become worse or better by putting in a new shell liner. Data from pilot plant test work illustrates the influence of the shell lifting effect on the grind for a primary grinding duty. Figure 5 shows the evolution of the mill discharge product size in relation to the lifting effect of the liners.

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.

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

San Diego, California, USA Fuzzy Logic Control On a SAG Mill Michel Ruel Optimization and Advanced Control (Top Control), BBA Inc., Canada CAN (Tel: 418-657-5901; e-mail: [email protected] bba.ca). Abstract: The paper will present a case where fuzzy logic was the logical choice to improve performances of a semi-autogenous grinding (SAG) mill.

mill performance could become worse or better by putting in a new shell liner. Data from pilot plant test work illustrates the influence of the shell lifting effect on the grind for a primary grinding duty. Figure 5 shows the evolution of the mill discharge product size in relation to the lifting effect of the liners.

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 .
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