
Choosing vibration monitoring methods Applications
A SAG mill is generally used as a primary or firststage grinding solution Attrition between grinding balls and ore particles causes grinding of finer particlesSAG mills are primarily used at gold copper and platinum mines with applications also in the lead zinc silver alumina and nickel industries

Chatter in Machining Milling amp Lathe Vibration Easy Guide
A vibration in the tool leads to a wave in the workpiece constant vibration creates a steady series of these waves Now imagine what happens if you make a second pass over a surface that is already wavy from chatterthe forces on your cutter vary with the peaks and troughs of the waves

BALL MILL GEARBOX PROBLEM Vibration
Additional vibration data was collected from the motor amp gearbox of the 1A Ball Mill Drive under no load To determine what problems if any existed with the drive a comparison of the route vibration data between 1A amp 1B Ball Mills was made as well as between loaded amp unloaded data at 1A Ball Mill

Optimizing your SAG mill operation International Mining
All AGSAG mills using radial or curved pulp lifters suffer from inherent material transport problems such as slurry and pebble pooling which decrease throughput and increase energy consumption The TPL completely eliminates slurry pooling and pebble pooling problems and ensures the best grinding conditions thus allowing AGSAG mills to

Ball Mill Girth Gear High Vibration Problem Case Study
Ball mill girth gear high vibration problem case study Ball Mill Slide Shoe Bearings bulkonline Forums Only issue will be excessive dust ingress or operation without oil flow you have a side drive mill with girth gear ie oil circuit is for mill slide brgs and side drive gearbox

Vibration Problem In Coal Mill Gearbox
Ball mill vibration due to poor lubrication sag mill vibration problems ball mill vibration due to poor lubricationhenan is the best vibration problem in coal mill gearbox chp for the sag and ball mills due to vibration problems mill get price problems an artificial neural network ann was applied to predict rock fragmentation a47 online

Effective Solutions for Costly Paper Mill Problems MRO
Excessive machine vibration in one paper mill critical equipment failures in another and a need for improved mill operations in a third were producing costs ranging from 200000 to 1200000 Three separate solutions from SKF eliminated the problems and reduced costs

Top Six Pump Vibration Problems Houston Dynamic
Excessive vibration that damages the pump or system Failure of the mechanical seals or packing Seizing of the pump 5 Pump Bearing Issues One of the leading causes of pump vibration problems is bearing failure This is because an estimated 10 to 30 of ball bearings are used long enough to experience normal fatigue failure

How to Determine Root Cause of Excessive Pump Vibration
Field Vibration Problem Example The writer was recently asked to investigate an excessive vibration problem on three new replacement vertical sewage lift pumps which had a different design then the original pumps The original pumps had not experienced any vibration problems The first step in the analysis was to distinguish between the

SAG Mill Operation at Cortez Evolution of Liner Design
Figure 2 SAG Mill Crash Stop on 1082003 Crash Stop 2 March 3 2004 Please refer to Figures 35 This crash stop was done on severely SAG mill limiting ore that typically averaged 360390 dry tph In comparison the worst case SAG mill limiting ore type throughput is 8160 dry tons per day 340 dtph

Structural Vibration and Ways to Avoid It Vibration
High stiffness will help avoid vibration problems but excessive use of oversized beams will affect the mass and cost An optimized design identifies where steel can be added or removed at key locations to maximize the stiffness and minimize the costs This optimized approach will provide significant cost savings to the owner far in excess

Condition Monitoring of Ball Mill with HD Technologies
Image 1 The ball mill at Orcem Netherlands Image 2 The gearbox just renovated with the shock pulse and vibration sensors Image 3 A principal overview of the ball mill 4 System setup 41 Measuring equipment Besides the gearbox the electric motor and the support bearings of the girth wheel are equipped with shock pulse and vibration

PDF SAG mill monitoring using surface vibrations
It was found that the mill vibration and the bearing temperature increased with motors power Also the results revealed that the mill noise reduced with the increase in water flow rate

Measuring Vibration with Accelerometers NI
Jul 15 2020018332Vibration is most commonly measured using a ceramic piezoelectric sensor or accelerometer An accelerometer is a sensor that measures the dynamic acceleration of a physical device as a voltage Accelerometers are fullcontact transducers typically mounted directly on highfrequency elements such as rollingelement bearings gearboxes or spinning blades

Sag mill vibration CR4 Discussion Thread
Jul 21 2009018332I m on a mining industry we re having excessive vibration on the discharge end of our trunnion sag mill bearing we already ask help for some expert and we are just done on relining the mill

Vibration analysis on a ball mill Solution for ore mining
Machinery Condition Monitoring and Predictive Maintenance Posts About vibrationalignmentbalance Ball Mills and Sag Mill Analysis of the vibration pattern of an II100 II101 INTRODUCTION torsional vibration analysis of the mill system if the mills are driven two 22 ft ball mills in the grinding circuit In that project the owners

Manual design of SAGballrod mill foundations
Mar 14 2007018332I have direct experience of a SAG mill with conflicting frequencies causing resonance and vibration problems I have also heard of many other other operations with similar issues Once built these are incredibly difficult and expensive to rectify

Mill Vibration Phenomena during Cold Rolling Innoval
Mill Vibration Phenomena during Cold Rolling All machines vibrate during operation However only a few of these vibrations cause problems to the product or the machine itself Typically the most damaging vibrations involve a natural resonance of the machine which significantly increases the motion of critical components

Problems facing sag mills
Problems facing sag mills Home product problems facing sag mills product list K Series Mobile Crushing Plant Mobile Vibrating Screen Belt Conveyer Sand Washing Machine S5X Series Vibrating Screen GF Series Vibrating Feeder Ball Mill Raymond Mill MW Series Micro Powder Mill T130X Superfine Grinding Mill

Problems facing sag mills
Problems facing sag mills problems facing sag mills Introduction to Milling Tools and Their Application mills but they can also be run at speeds 2 12 times faster than HSS end mills The choice of tool material depends on the material to be cut as well as on the maximum spindle speed of the machine Service Online Problems in the Textile Industry Bizfluent

OPTIMAL SAG MILL CONTROL USING VIBRATION amp
SAG AG Mill Vibration Process Control Optimization INTRODUCTION The vibration sensor based signals are more responsive and have a greater dynamic range than traditional control signals such as electronic ears bearing pressure and mill power The increased response

Throughput optimisation in milling circuits
SAG Mill Discharge Controlling the feed and discharge of a mill is mostly a stabilisation exercise you need to be able to quickly and accurately control the mill feed rate If the mill feed setpoint is changed then the actual feed rate needs to stabilise at the new target in a short period of time The feed rate setpoint can then be tied

Mill Girth Gear Temperature Problems
Sag mill girth gear temperature problems at start up Innovative Gear Drive Solution for Grinding Mills Both the SAG mill and ball mill are each driven by two gear units Because on a conventional drive variant only one engagement per pinion with the girth gear is possible per side an economic power limit of about 8 MW per drive is in effect

Axial vibration of ball mill pinion
Sag Mill Vibration Problems ball mill girth gear high vibration problem case sag mill pinion vibration problems girth gear high vibration About vibration ring gear mills related vibration in Get Price And Support Online SAG Mill Grinding Circuit Design

Sag Mill Vibration Problems
Sag Mill Vibration Problems Get Price And Support We would be glad to have feedback from you Drop us a line whether it is a comment a question a work proposition or just a hello You can use either the form below or the contact details on the right

Literature Review Gearless Motor Failures A Mill
Sep 10 2014018332The Collahuasi motor was for a 40 ft SAG mill The Antamina 38 ft SAG mill was also driven by an ABB motor and the hanger plates had not failed on that machine after several years of operation Similarly the Sossego motor for the 38 ft SAG mill had not failed It too had an ABB motor and it had operated longer than the Collahuasi motor

Grinding Mill Foundations
Sep 23 2014018332Most of our work since 2000 has been in developing grinding mill foundations to avoid vibration and unacceptable deflections On a recent project for a plant in Peru the client was told by the mill vendor that there was no need to do a systems dynamic analysis on the mill foundations because the mills on that project were gear driven rather than being driven by ring motors gearless drives

Grinding Mill Foundations
Sep 23 2014018332This was the first analysis that explained why the direction of mill rotation affected on vibration levels Fimiston mill foundations Mill 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 The mills are supported on steel supports rather than concrete The mills operated for many years without issue and then began to vibrate excessively

Model for the solution of metal rolling mill vibration
Solve vibration problems This vital tool assists in the solution of rolling mill vibration problems faced by the entire metal rolling industry It is a finite elementbased model that uses available mill data to predict all the key natural resonant modes of vibration of any rolling mill The information it needs

Noise Monitoring That Prevents Mill Damage Br252el amp Kj230r
The Manta Controls Advanced Control System called the SAG Cube automatically monitors and controls a SAG Mill keeping track of critical process variables impacting mill throughput For most sites one hour of operation provides a revenue between AUD 20000 per hour up to or greater than AUD 100000 per hour

PDF Acoustic emissions monitoring of SAG mill performance
The PSD from multiple revolutions of AGSAG mill surface vibration data has been shown to be a good bulk spectroscopic inferential measure particularly in terms of frequency band power of what

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

Vibration Problems In Coal Mill Z Niejednego Garnka
Vibration Problem In Coal Mill Gearbox Ball mill vibration due to poor lubrication sag mill vibration problems ball mill vibration due to poor lubricationhenan is the best vibration problem in coal mill gearbox chp for the sag and ball mills due to vibration problems mill get price problems an artificial neural network ann was applied to predict rock fragmentation a47 online

Vibration Ring Gear Mills
Vibration Ring Gear Mills sag mill pinion vibration problems There are few inching and no vibration problems was Mill Capacity SAG Mill Net Milling Rate vertical roller mills vibration analysis ring and roller mill specification 200 mesh vertical vibration mill Rock crusher for

Vibration problem in cement mill zwemschool de waterman
VIBRATION STUDIES OF CEMENT MILL VIBRATION STUDIES OF CEMENT MILL Steps for vibration measurements Impact test was carried out at selected locations on the torsion bar to know its natural frequency Normal vibration signatures were recorded with motor speed being 994 rpm and pinion speed 122 rpm Vibration data was recorded on selected bearing locations of motor gearbox and