Sag Mill Sound Control

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

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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 andor 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

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Noise monitoring for optimal mill operation

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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OPTIMAL SAG MILL CONTROL USING VIBRATION

OPTIMAL SAG MILL CONTROL USING VIBRATION DIGITAL SIGNAL PROCESSING TECHNIQUES Karl S Gugel PhD 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

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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 Viejoa joint venture between Barrick 60 and Goldcorp 40is improving the control and operation of its SAG mill resulting in reduced liner wear more efficient mill performance and optimized energy consumption

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Optimization and Control of a Primary SAG Mill Using

Optimization and Control of a Primary SAG Mill Using Realtime Grind Measurement CW 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

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Autogenous and SemiAutogenous Mills

AGSAG mills are normally used to grind runoffmine ore or primary crusher product Feed size to the mill is limited to that size which can be practically conveyed and introduced into the mill The mill product can either be finished size ready for processing or an intermediate size ready for final grinding in a ball mill pebble mill

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Performance enhancement tools for grinding mills

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

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I N N O V A T I O N X

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

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OPTIMAL SAG MILL CONTROL USING VIBRATION

OPTIMAL SAG MILL CONTROL USING VIBRATION DIGITAL SIGNAL PROCESSING TECHNIQUES Karl S Gugel PhD 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

Learn More
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 andor 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

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Technical Program SAG Conference

Advanced Control Optimization and Digital Twin in Comminution for Better Mineral Throughput and Size Classification Nazari Carricajo 72 1045 Soundbased Advanced Process Control of a SAG Mill at Sumitomo Minera San Cristobal King Vidal McKay 73 1100

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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

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Optimization and Control of a Primary SAG Mill Using

Optimization and Control of a Primary SAG Mill Using Realtime Grind Measurement CW 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

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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

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SAG Mill SemiAutogenous 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

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MILLING CONTROL OPTIMISATION Mintek

Figures 8 and 9 on the right show results from a gold plant’s SAG mill achieved with MillStar’s Segregated Ore Feed Controller combined with the Power Optimiser • The standard deviation of the mill feed control is greatly reduced • The cyclone feed is more stable allowing for consistent size separation and feed to downstream processes

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TECHNICAL NOTES 8 GRINDING R P King Mineral Tech

TECHNICAL NOTES 8 GRINDING R P King 82 ROOLVLRQ 5ROOLQJ ZLWK QLSSLQJ dimensions of the lifters control the tumbling action of the media Let Jt be the fraction of the mill volume that is occupied by the total charge Jb the fraction of the mill volume that

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Optimization of mill performance by using SciELO

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

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Choosing a SAG Mill to Achieve Design Performance

A further explanation is required to explain the importance of designing the SAG mill chamber to draw required power at optimum operating conditions of 75 critical speed and less than 30 by volume load Recent studies in the threefoot diameter SAG mill are instructive The following graph shows the relevant facts as Figure 2

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