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A SAG mill is generally used as a primary or first-stage grinding solution. Attrition between grinding balls and ore particles causes grinding of finer particles.SAG mills are primarily used at gold, copper and platinum mines with applications also in the lead, zinc, silver, alumina and nickel industries.

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Sep 10, 2014 · In contrast to the cracks in the KCGM mill that seem dormant according to [1], consider the Candelaria SAG mill failure described by Yanez and Tapia in [3]. Whilst the direct cause of the Cadia vibration problems and the rotor pole cracks is related to estimation of

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motor vibration problems on a tube ball mill. Development of a Tube-ball Coal Mill Mathematical Model Using, optimization problems with a faster convergence rate than, The Tube Ball mill used by EDF is a motor driven tumbling barrel charged, Figure 1 Tube Ball Mill Principle of Operation, outlet temperature vibrates away from the measured mill,

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Vibration Sag Mill Motor NDE Bearing Vibration Sag Mill Motor NDE Bearing. robbie60 Member. 7/28/155 28 PM. At our mine we have an issue with vibration at the Sag Motor NDE bearing. The bearing is a journal white metal bearing. The motor has been running for about 14 months now. The vibration at the NDE bearing was around 2mm/sec.

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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

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Sep 10, 2014 · Literature Review Gearless Motor FailuresA Mill Designer's Viewpoint admin 10 September 2014 2014, Ball mill, Design, Design Validation, Failure Analysis, Gearless Mill Drives, Grinding Mills, Literature Reviews, Mill Design, Mills, Ring Motor, SAG mill, Stiffness, Strain Gauging, System Analysis, Vibration, Welding

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Locked charge starts and your grinding millOutotec absorption so a failure of mill bearings, (normally the CAUSES.SAG and ball mills with grate discharge are not prone to locked charge events because of the Damaged bearing.Cracked bearing support stool after a locked charge event

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motor vibration problems on a tube ball mill. Development of a Tube-ball Coal Mill Mathematical Model Using, optimization problems with a faster convergence rate than, The Tube Ball mill used by EDF is a motor driven tumbling barrel charged, Figure 1 Tube Ball Mill Principle of Operation, outlet temperature vibrates away from the measured mill,

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Energy Saving Ball mill,Ball grinder,Ball grinding mill Application Energy saving mining ball mill is a key equipment in beneficiation is widely used in ore dressing production line such as Gold ore, Cooper ore, Magnetite ore, Antimony, Calcite, Kaolin, Mica, Clay,

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maintaining normal production numbers at Gold Corp Peñasquito on two 2265 TPH SAG mills. Additional vibration sensors were also positioned at fixed points on the inlet and discharge ends of the mill to yield two real-time volumetric fill levels along with another fill level measurement taken from the mill shell.

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A SAG mill is generally used as a primary or first-stage grinding solution. Attrition between grinding balls and ore particles causes grinding of finer particles.SAG mills are primarily used at gold, copper and platinum mines with applications also in the lead, zinc, silver, alumina and nickel industries.

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sag mill vibration problems . ball mill girth gear high vibration problem case study. heliccal girth gear for cement mill back lash a case study has been . Get Price And Support Online Previous Page Calcium Carbonate Mining From Ocean Next Page Investment Cost Of Steckel Mill.

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Vibration Sag Mill Motor NDE Bearing Vibration Sag Mill Motor NDE Bearing. robbie60 Member. 7/28/155 28 PM. At our mine we have an issue with vibration at the Sag Motor NDE bearing. The bearing is a journal white metal bearing. The motor has been running for about 14 months now. The vibration at the NDE bearing was around 2mm/sec.

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SAG Mill Power. SAG milling can be optimised to achieve maximum breakage and throughput (or any other number of objectives). The relationships between the key variables are highly non-linear and shift as the ore hardness, steel load and liner conditions change.

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Sag Mill Pinion Vibration Problems. As mentioned the Sag Mill was run for 8 days at its limit 5500kwto 5700 kw and this is the time the high vibration started I still have the motor suspect but the gearing pinion and girth gear did not look too bad

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and excessive vibration occur, which can shorten the life of your gear and pinion. 's field service and into real problems. Visual inspection after cleaning uncovered Gear being replaced on an 11,000 HP Sag Mill 3711-05-18-EN-MSE Gear installation process •

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Grinding mill finds continuous online surveillance of vibration to be cost effective after conversion from offline system Semi-autogenous grinding mills, also known simply as SAG mills, grind materials from large chunks into small, usable pieces for processing. More Info Mill Vibration Monitormahamayaresidencyin

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1 CONGA THE WORLD'S FIRST 42 FOOT DIAMETER 28 MW GEARLESS SAG MILL T. Orser1, V. Svalbonas 2 and *M. Van de Vijfeijken 3 1Newmont Mining Corporation 10101 East Dry Creek Road Englewood, CO 80112, USA 2Metso Corp. 2715 Pleasant Valley Rd.

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SAG Mill Power. SAG milling can be optimised to achieve maximum breakage and throughput (or any other number of objectives). The relationships between the key variables are highly non-linear and shift as the ore hardness, steel load and liner conditions change.

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supported grinding mills up to the largest sizes. SAG/ball mill circuit incorporating pebble crushers and a POLYCOM® high-pressure grinding roll. SAG and ball mill for gold ore grinding. One of three SAG mills with 9.75 m diameter and 2 x 4000 kW drive power. These mills operate in conjunction with ball mills for iron ore grinding in Iran.

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SINGLE STAGE SAG/AG MILLING DESIGN ABSTRACT Single stage semi-autogenous / autogenous (S/AG) milling has become a common design for a variety of ore types with the advantages of being comparatively low capital cost and flexible for future expansion. The single stage

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SAG MILL MONITORING USING SURFACE VIBRATIONS frequency-and time-domain signal processing methods can be used to extract 'features' from AG/SAG mill surface vibration a key problem is the

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SAG mills are characterized by their large diameter and short length as compared to ball mills. The inside of the mill is lined with lifting plates to lift the material inside the mill, where it then falls off the plates onto the rest of the ore charge. According to the problems of real vibration test difficulty and too many unknown

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Locked charge starts and your grinding millOutotec absorption so a failure of mill bearings, (normally the CAUSES.SAG and ball mills with grate discharge are not prone to locked charge events because of the Damaged bearing.Cracked bearing support stool after a locked charge event

Get Price### INTRODUCTION SAG MILL MONITORING USING SURFACE

SAG MILL MONITORING USING SURFACE VIBRATIONS and full-scale mills and vibration signals coupled with soft-sensor models logging of three sensors permits solution of the inverse problem of

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Jun 19, 2015 · If 75 percent of critical speed is considered desirable for efficient grinding in a 2.4 meter (8 foot) diameter mill, then the same will be true for a 5.0 meter (15½ foot) diameter mill.

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SAG Mill Power. SAG milling can be optimised to achieve maximum breakage and throughput (or any other number of objectives). The relationships between the key variables are highly non-linear and shift as the ore hardness, steel load and liner conditions change.

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iii ABSTRACT Grinding mills used in the mining industries are the most energy-intensive operation and also require a large number of wear resistant materials, which are utilized for mill liners and

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OPTIMAL SAG MILL CONTROL USING VIBRATION & DIGITAL SIGNAL PROCESSING TECHNIQUES ABSTRACT Recent developments in low power wireless and Digital Signal Processing (DSP) technologies have given rise to a new system that can monitor vibrations in real-time on the rotating surface of SAG, AG, and Ball mills.

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SINGLE STAGE SAG/AG MILLING DESIGN ABSTRACT Single stage semi-autogenous / autogenous (S/AG) milling has become a common design for a variety of ore types with the advantages of being comparatively low capital cost and flexible for future expansion. The single stage

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SAG MILL DISCHARGE SCREENS-TROMMEL vs. VIBRATING Tony Moon, RTZ What I'd like to talk about is probably one of the nastiest bits of mill design for a grinding circuit, and that is the choice of what do you use on a SAG mill discharge? Do you use vibrating screens or trommel screens? What many of you probably don't realize is that at

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sag mill vibration problems. Sag Mill Syncronis Motor high axial vibration non drive end bearing levels day to day as there can be more Measuring Ball Mill Foundation Movement Problem Contact supplier. selection of vibration pickup for ball grinding mill pinion bearing.

Get Price### CONGA THE WORLD'S FIRST 42 FOOT DIAMETER 28 MW

1 CONGA THE WORLD'S FIRST 42 FOOT DIAMETER 28 MW GEARLESS SAG MILL T. Orser1, V. Svalbonas 2 and *M. Van de Vijfeijken 3 1Newmont Mining Corporation 10101 East Dry Creek Road Englewood, CO 80112, USA 2Metso Corp. 2715 Pleasant Valley Rd.

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Sep 23, 2014 · This was the first analysis that explained why the direction of mill rotation affected on vibration levels. Fimiston mill foundationsMill and soil not shown for clarity. Red Dog Mine One of the more interesting projects that we have been involved with was the Red Dog Mine SAG mill foundations.

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We have found nothing mechanically wrong to relate to this problem. The vibration has high energy, Time wave forms are sinusoidal and not impactive. I have tried to relate this frequency to other parts on the Sag Mill with no luck. This is why I come back to the motor. Will upload the vibration

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