vibration problem in cement mill
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How to reduce the horizontal vibration of cement grinding
Now when the cement grinding ball mill is started vibration values are around 14 mm/s first 4 harmonics of the GM and then for about half an hour they go up to 28 mm/sin horizontal direction while in the vertical and axial direction there is no such change.
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Vibration Monitoring A Case Study Maintenance and
Vibration based condition monitoring VCM has over the years enjoyed a very significant level of popularity due to its versatility and ability to promptly detect the least of changes in machine operation which could lead to eventual downtime Additionally VCM has been described in some earlier studies as the class of condition monitoring CM
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PLANT MAINTENANCE I Predictive maintenance
vibration analysts with a vivid picture of the operating condition of essential rotating machinery The ability to overlay frequencies and match fault frequencies Thanks to the early identification of a damaged bearing at a Cemex plant in Egypt the company was able to keep the cement mill running and save more than US 500 000 in unplanned
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Solution of a Serious Repetitive Vibration Problem on a
Vibration problems which occur after some considerable period of operation are often solved by simply replacing or repairing worm system components This may reduce the vibration to tolerable levels but does not eliminate the basic cause for the vibration having developed The vibration usually recurs after the same or a shorter period of operation following each subsequent replacement/repair
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CEMENT INDUSTRY POLLUTION CONTROL MEASURES.
Following methods may be employed to control noise pollution in cement industry 1 Using vibration damping pads isolating vibrating parts etc to reduce noise pollution in cement industry 2 By enclosing the source and making them sound insulated 3 Using personal noise protectors like ear plugs ear muffs etc.
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FOR VERTICAL ROLLER MILLSLoesche
Reduction of vibration levels Roller mills are constructed of major mechanical components that can be easily damaged by high mill vibrations It is very important that a mill is operated in a stable manner and that corrective actions are taken to prevent damage to mechanical equipment and mill outages that result in lost production.
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Structural Vibration and Ways to Avoid It Vibration
2 days ago Once the facility is built it is very expensive to modify the structural deck beams to fix a vibration problem A better approach is to conduct a Structural Vibration Analysis of specific areas of the deck or platform During the design phase it is easy to make minor changes to the beam orientation and design to avoid resonance.
Get PriceFour reasons for frequent vibration of vertical mill
The causes of vibration of vertical mill are more complex and the basic reasons can be divided into three categories The first is the vibration caused by unreasonable control of material layer thickness water injection pressure difference air volume air temperature grinding pressure feed quantity and so on.
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VIBRATION STUDIES OF CEMENT MILLMaintenance
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
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Concrete base influence on the increased vibrations level
Abstract The paper presents the influence of concrete base cracks on the state and performance of mill electrical drive components based on vibration measurements taken at characteristic locations for the drive group Measurements were performed before and after the reconstruction of the concrete base under the full load of electrical drive to demonstrate the negative impact of the existing
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Ball Mill Frequent Problems And Solutions
Ball mill is a kind of commonly used grinding equipment in beneficiation plant and cement production plant Like all the machines there might be problems in the work process of ball mill In this article we mainly introduce frequent problems and solutions in ball mill work process.
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How To Solve The Problems Of Raymond Mill Vibration
Raymond mill is mainly used for grinding mineral products in industries such as metallurgy building materials chemical mining etc It can be used for grinding various kinds of nonflammable and non explosive minerals of which Moh s hardness is less than 6 and moisture content are lower than 6 .The typical materials are calcite talc barite fluorite rare earth marble bauxite
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Cement IndustryHansford Sensors
Vibration sensors for the cement industry for use in kiln drives crushers screens conveyor belts raw mills elevators separators and blowers Vibration Monitoring
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First Aid Treatment for Machine Vibration Problems
The unbalance had caused an excessive vibration which reduced hourly cement output by approximately 18 over a period of 53 days Upon the suspicion of unbalance a visual inspection and cleaning of the fan impeller was recommended as a first aid treatment before detailed vibration analysis and rotor balancing was carried out by the experts.
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Health Risks Associated With Workers in Cement Factories
59 with high among Khyber cement workers and low in JK cement workers Asthma problems was between 41 and 51 with high in JK cements Ltd Khrew workers and low in workers of Saifco cements Khonmoh.97 workers were suffering from eye irritation The prevalence of various other diseases was also found high in cement factory workers.
Get Price6 Tips for Perfecting Poured Concrete Vibration Forming
Poured concrete can have problems that greatly affect the overall quality of the pour such as bug holes honey combing and cold joints Problems that commonly occur when using shoring equipment are mitigated by use of a concrete vibrator which consolidates concrete and refines the pouring process Here are some tips for perfecting poured concrete with vibration.
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PROCESS CONTROL FOR CEMENT GRINDING IN
The VRM is a type of grinding mill integrated with multi functions such as grinding drying and separation used for grinding of coal petroleum coke and minerals Most recently this technology has been employed for comminution of Blended Slag and Port Land cement grinding The cement grinding and drying system be dovetail of a large array of obsolete incompetent equipment and was completely replaced by a single VRM it improves the fineness and diminish the maintenance and power consumption 1 34 36 Optimization of cement grinding using standard bond grinding calculations based on population balance models is successfully applied 4 38 Various grinding laws energy relationships control factors and controller design for cement grinding
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DETECTING CLASSIFIER COAL MILL DAMAGE USING A
D Romahadi et al Classifier Coal Mill Damage Detection using Vibration Signals Analysis 177 problems with the spectrum Fig 3 showed the Classifier Coal Mill machine being measured There were three main components namely motor gearbox and rotor The motor was on the top and was connected to the gearbox via the
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PDF Vibration analysis on a cement mill foundation
In the present case study the causes of the high vibrations on a double drive cement mill is investigated by performing a series of vibration measurements on the cement mill pinion and the main
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Good vibrations at the cement plant Evolution
But thanks to a vibration analysis solution from SKF the cement producer was able to put an end to the problem Related Articles Twenty years ago when managers at Czech cement producer Českomoravský Cement decided to replace the gearboxes for the two grinding mill drives at the company s plant in the town of Radotín just outside the
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Out Problem Cement Mills Pinion Vibrations
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
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Investigations of Structural Vibrations Problems of High
mostly with the vibrations of the air ducts and the return passages of the separator The frequencies are in the range between 30Hz and 50Hz Figure 7a shows an example of such vibrations In order to define a mill vibration spectrum during the operation the acceleration measurements in the characteristic points of the structure were conducted.
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Using Vibration Analysis To Identify Help In Correcting
B fan during operation noted significant movement/vibration at the fan motor bearings but also at the concrete foundation surrounding the entire machine The plant had two seemingly identical ID Fans A B operating about 100 ft from one another Only the B fan had a vibration problem.
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First Aid Treatment for Machine Vibration Problems
The unbalance had caused an excessive vibration which reduced hourly cement output by approximately 18 over a period of 53 days Upon the suspicion of unbalance a visual inspection and cleaning of the fan impeller was recommended as a first aid treatment before detailed vibration analysis and rotor balancing was carried out by the experts.
Get Price
Concrete base influence on the increased vibrations level
The influence of concrete base cracks on the state and performance of a mill electrical drive components Vibration measurements were taken at characteristic locations for the drive group Measurements were performed before and after the concrete base reconstruction under the full load of electrical drive.
Get Price
How To Reduce Chatter Vibration In CNC Machining
Chatter is a problem that every CNC machine operator must deal with from time to time Machining vibration is a common problem in CNC manufacturing Milling turning or drilling will all cause parts to suffer this torture It affects the quality and efficiency of processing will cause the finish of the parts to decrease and will damage and significantly shorten the life of the end mill.
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The cause of vibration of ball bearing shell of ball mill
The cause of vibration of ball bearing shell of ball mill Date 14 45 writer cement editor Views Ball mills are the most widely used grinding machines in heavy industry such as power generation mineral processing chemical and building materials.
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Fractional Gear Mesh FrequenciesReliability
Observing high vibs on pressing and lifting pinion Drive End DE and Non Driven End NDE bearing on a ball mill Motor and main Gear Box drive are OK Clear predominant gear mesh frequency is appearing in the spectrum along with harmonics and side bands.
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CementIndustries Wilcoxon Sensing Technologies
Wilcoxon vibration monitoring sensors are used by maintenance engineers to reliably collect data and detect faults on cement production machines used for grinding crushing material transport systems ball and roller mills and material separators including Air compressors Belt drives Fans and blowers.
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Hi Dear I have deal with a problem in cement mill The
I have deal with a problem in cement mill The recorded vibration on pinion s bearings are nearly high especially in vertical direction following table It will be appreciated for me if I have your advices What can be source of vibration Yours sincerely Mohsen Gharemani Nick Power 2000Kw Pinion 105 rpm Ø teeth
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DETERMINATION OF CORRELATION BETWEEN SPECIFIC
The vibration on the motors of the raw mill is decreased by about 12 as the moisture content and size of the raw materials decreased by half By this way specific energy consumption of the unit
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Causes Of Excessive Vibration Of The Ball Mill During
1 The basic strength and rigidity of the ball mill are insufficient During the transformation process many cement plants directly converted to closed circuit systems through open circuit systems ignoring the foundation of the ball mill equipment resulting in vibration of their main bodies In this case the cement plant can solve it by
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Research on the Vibration of Rolling Mill Scientific
In this paper a horizontal vibration problem in strip rolling was studied dynamic model was established the mechanism of self excited vibration was analyzed The main reason of surface quality of strip is self excited vibration A vertical natural frequency and vibration mode of the rolling mill are obtained by finite element method It lays the theoretic foundation for future researches on
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