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sag mill vibration monitoring

(PDF) SAG mill monitoring using surface vibrations

The process state of an AG/SAG mill can be inferred from surface vibration monitoring. This is a passive, non-intrusive, low cost and reliable hardware monitoring technology that is sensitive to ...

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INTRODUCTION SAG MILL MONITORING USING SURFACE

SAG MILL MONITORING USING SURFACE VIBRATIONS Jonathan Campbell1, Steven Spencer1, David Sutherland1, Thressa Rowlands1, Keith Weller1, Paul Cleary2 and Adrian Hinde3 1CSIRO Minerals, PO Box 883 ...

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(PDF) Acoustic emissions monitoring of SAG mill performance

The process state of an AG/SAG mill can be inferred from surface vibration monitoring. This is a passive, non-intrusive, low cost and reliable hardware monitoring technology that is sensitive to ...

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OPTIMAL SAG MILL CONTROL USING VIBRATION DIGITAL

The basic vibration monitoring system consists of three wide bandwidth custom vibration sensors as shown in Figure 1. Two are mounted on fixed ends of the mill while the third is placed on the mill shell inside an enclosure that houses an RF transmitter. Recharge-able Li batteries are used with the transmitter and the charge duration is typically a minimum of 10 weeks. The fixed sensors can be ...

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Choosing vibration monitoring methods - Applications ...

A Canadian mine that runs a couple of SAG mills was struggling with breakdowns of its gearbox over and over as its routebased monitoring concept was not sufficient enough to capture the fault in time. The staff missed important information between data collection intervals, and the fault developed faster and more unexpectedly than the route and timebased measurement programme could follow. As ...

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Acoustic emissions monitoring of SAG mill performance ...

Surface vibration (acoustic emissions) monitoring is a noninvasive low-cost means of monitoring normally inaccessible attributes of processes or equipment operation. The current investigation monitors vibrations in a SAG mill by an accelerometer attached to the outside of the rotating shell. Vibrations are interpreted in terms of the internal state of the SAG mill for a conditional ...

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Reliable fault detection on a SAG Mill with on-line ...

This paper will show the advantage of an on-line continuous vibration monitoring compared with the regular surveys using portable equipment. It will present two case studies of detecting bearing faults in a Semi Autogenous (SAG) Mill on a mining side; one in a gearbox, the other one in the motor. Both faults have developed rapidly and would have been missed by the, already in place, 6-weekly ...

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Ball Mills and Sag Mill problem AMP Maintenance Forums

21/11/2007  I work in an industrial copper company as vibration analysis supervisor. This company started to work about 2 years ago. We have two Ball Mills and one Sag Mill. We had some visual inspection on pinion and ring gears, during these inspections we found some abnormal wear on this gears (pictures show this problem in enclosure).

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What's the Difference Between SAG Mill and Ball Mill ...

SAG mill is usually used to grind large pieces into small pieces, especially for the pre-processing of grinding circuits, thus also known as primary stage grinding machine. Based on the high throughput and coarse grind, AG mills produce coarse grinds often classify mill discharge with screens and trommel. SAG mills grinding media includes some large and hard rocks, filled rate of 9% – 20% ...

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RESPONSE OF PRIMARY GRINDING MILL PERFORMANCE TO

operating conditions of a SAG mill and how the vibration response and hence mill operating conditions vary as a function of time, including during mill equipment failures such as a broken discharge grate. Opportunities for improved mill control based on the data from the on-line monitor are also discussed, as well as the implications in terms of mill processing and maintenance performance ...

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OPTIMAL SAG MILL CONTROL USING VIBRATION DIGITAL

The basic vibration monitoring system consists of three wide bandwidth custom vibration sensors as shown in Figure 1. Two are mounted on fixed ends of the mill while the third is placed on the mill shell inside an enclosure that houses an RF transmitter. Recharge-able Li batteries are used with the transmitter and the charge duration is typically a minimum of 10 weeks. The fixed sensors can be ...

Get PriceEmail contact

Acoustic emissions monitoring of SAG mill performance ...

Surface vibration (acoustic emissions) monitoring is a noninvasive low-cost means of monitoring normally inaccessible attributes of processes or equipment operation. The current investigation monitors vibrations in a SAG mill by an accelerometer attached to the outside of the rotating shell. Vibrations are interpreted in terms of the internal state of the SAG mill for a conditional ...

Get PriceEmail contact

Reliable fault detection on a SAG Mill with on-line ...

This paper will show the advantage of an on-line continuous vibration monitoring compared with the regular surveys using portable equipment. It will present two case studies of detecting bearing faults in a Semi Autogenous (SAG) Mill on a mining side; one in a gearbox, the other one in the motor. Both faults have developed rapidly and would have been missed by the, already in place, 6-weekly ...

Get PriceEmail contact

RESPONSE OF PRIMARY GRINDING MILL PERFORMANCE TO

operating conditions of a SAG mill and how the vibration response and hence mill operating conditions vary as a function of time, including during mill equipment failures such as a broken discharge grate. Opportunities for improved mill control based on the data from the on-line monitor are also discussed, as well as the implications in terms of mill processing and maintenance performance ...

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Machinery Equipment MRO December 2013 Choosing vibration ...

01/03/2016  Grinding mill finds continuous online surveillance of vibration to be cost effective after conversion from offline system. S emi-autoge - nous grind-ing mills, also known simply as SAG mills, grind materials from large chunks into small, usable pieces for processing. The ones used in mining operations in Canada are essentially autogenous, but use

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Case story: Monitoring noise to prevent mill damage

Protecting and optimizing mills. The main benefits of this type of reliable SAG mill monitoring are accurate and repeatable decibel signals at the various frequencies – information that is used to protect the mills. The next phase of the project is to provide measurements that can help customers operate a SAG or AG mill optimally. John ...

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Condition Monitoring of Ball Mill with HD Technologies ...

There are many different types of mills; ball mills, rod mills, SAG (Semi-Autogenous Grinding) and autogenous mills. In a ball mill, steel or stone balls are mixed with the ore and during rotation of the drum the ore is ground, by friction and compression, into a suitable fineness for the next step in the process. The main component of all mills is a rotating drum, turning with a suitable ...

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Ball Mills and Sag Mill problem AMP Maintenance

21/11/2007  I work in an industrial copper company as vibration analysis supervisor. This company started to work about 2 years ago. We have two Ball Mills and one Sag Mill. We had some visual inspection on pinion and ring gears, during these inspections we found some abnormal wear on this gears (pictures show this problem in enclosure).

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Vibration Sag Mill Motor NDE Bearing AMP

The vibration measurements at the feet and concrete are rms. What vibration levels would you expect in mm/rms Not being a structural engineer but the foundation is quite massive. When they commissioned and started the Sag Mill up I was quite impressed with the low vibration which included the motor, gearbox and pinion bearings.

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What's the Difference Between SAG Mill and Ball Mill ...

SAG mill is usually used to grind large pieces into small pieces, especially for the pre-processing of grinding circuits, thus also known as primary stage grinding machine. Based on the high throughput and coarse grind, AG mills produce coarse grinds often classify mill discharge with screens and trommel. SAG mills grinding media includes some large and hard rocks, filled rate of 9% – 20% ...

Get PriceEmail contact

Acoustic emissions monitoring of SAG mill performance ...

Surface vibration (acoustic emissions) monitoring is a noninvasive low-cost means of monitoring normally inaccessible attributes of processes or equipment operation. The current investigation monitors vibrations in a SAG mill by an accelerometer attached to the outside of the rotating shell. Vibrations are interpreted in terms of the internal state of the SAG mill for a conditional ...

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Vibration measurement on SAG mill drive motor IEEE

Vibration measurement on SAG mill drive motor for Energy harvesting or predictive maintenance

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Complete Monitoring Solutions - VibroSystM

The online monitoring of a large Ball or a SAG Mill provides vital information on the health of the machine. More than just protection, VibroSystM provides ZOOM users with autonomous data analysis and first level diagnostics that are both predictive and preventative, which will significantly reduce machine downtime. Our complete monitoring solutions give our clients the necessary tools to ...

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Semi Autogenius Grinding (SAG) Mill

Vibration Monitoring Overpressure Protection Pumps Back. Storage Distribution; Storage Flow Measurement Level Measurement ... We understand the importance of the SAG mill and have the proper tools to accurately monitor the temperature of the mill’s motor. This prevents overheating conditions, reduces lost production, and lowers the costs of maintenance. Accurately monitor temperature Lower ...

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Ball Mills and Sag Mill problem AMP Maintenance

21/11/2007  I work in an industrial copper company as vibration analysis supervisor. This company started to work about 2 years ago. We have two Ball Mills and one Sag Mill. We had some visual inspection on pinion and ring gears, during these inspections we found some abnormal wear on this gears (pictures show this problem in enclosure).

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THE EYES HAVE IT: IMPROVING MILL AVAILABILITY THROUGH ...

indicators external to the mill (e.g., noise and vibration) in an effort to extrapolate this data into a description of the internal conditions. More recently, computer modelling and simulation has been increasingly explored in order to predict the dynamics of the mill internals. The idea of placing a camera in a running SAG mill has existed for some time, as an image of the internals of a ...

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Home AMP Maintenance Forums

Condition monitoring the intelligent Way. SAG MILL M/C Condition. Critical . Machine Condition Report. Machine Technical Data’s. ISO 10816 Classification Class-IV 18.0- Critical Motor Speed. 660 RPM approximately Gear box Input Speed 660 RPM approximately Gear box output Speed 133 RPM approximately Mill Speed 8 RPM approximately Foundation:-Separate RCC ...

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

01/01/2015  Since it is curr ntly infeasible to accurately asure the charge volume inside a SAG mill, perato s are challenged with the task of monitoring the corr lati ns of several variables at once to indirectly inf r if the mill is b ginning to overload. Moreover, the changes in measured variables and th ir correlations a e subtle, thu a SAG mill often s verely overl ads by the time an operator beco es ...

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Listening to SAG Mill Noise Pays Off for Pueblo Viejo

One of these initiatives was to install an acoustic monitoring system on the SAG mill. After SmartEar was installed in January 2013, data from the system was used to optimize the mill’s performance by minimizing any interval in which the mill is either running too quietly or too loudly. A mill running ‘too quietly’, according to authors D. La Rosa, D. Shuen, M. Wortley and R. Sales, is ...

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Vibration Analysis

This alignment can often extend the availability of an asset from months to years. Emerson’s laser shaft alignment solution includes the alignment application for the AMS 2140 Machinery Health Analyzer as well as the AMS 8240 sensALIGN™ high-precision laser shaft alignment fixtures.

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