sag mill pinion vibration problems

sag mill pinion vibration problems

Ball Mills and Sag Mill problem AMP Maintenance Forums

Nov 21, 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).

Sag Mill Syncronis Motor high axial vibration non drive ...

As mentioned the Sag Mill was run for 8 days at its limit 5,500kwto 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.

SAG Milling in Australia -Revised Submission

The Ernest Henry SAG mill (11 MW) is currently the largest twin pinion single drive mill installed in Australia. Problems have been experienced with the twin pinion drive at Fimiston and with the ring motor at Cadia. At Cadia, excessive vibration and deflections in the drive stator were encountered during commissioning of the mill and later ...

Ball Mill Maintenance Installation Procedure

We sight herewith the most common problems, with their solutions. No. 1 – GEAR AND PINION VIBRATION. Cause A – EXCESSIVE BACKLASH. Move mill gear toward the pinion and check for proper backlash per separate instructions. Cause B – INSUFFICIENT BACKLASH.

about problem of cement mills pinion vibrations

sag mill vibration problems - pragatieducationalin. sag mill pinion vibration problems assetcareco ball mill torque dual pinion failure, DUAL PINION SAG MILL VS SINGLEMILL ball mill helical pinion gear vibration , Get Price gear driven mills pinion vibration issues. 【Live Chat】 VDZ maintenance of cement plants for the cement

SAG Mill Components - Mineral Processing Metallurgy

Apr 18, 2018  SAG Mill Components. ... If the mill requires approximately 6000 horsepower or less, it is possible to drive it with a single pinion. To date, however, economics has dictated that most mills over 3500 horsepower be driven with two pinions, using wound rotor motors driving thru speed reducers. ... pair coupled to the output shafts of a special ...

Ball mill torque dual pinion failure - Manufacturer Of ...

Dual pinion sag mill huisarts vansichemnl. Ball Mill Failure Modes stundengebet SAG mill, ball mill, ring gear, dual pinion, drive systems, variable Chat With Sal Chat With Sal ball mill failure modes OptonClinic Ball Mill Ball mills are used primary for single stage fine grinding, regrinding, and as the second stage in two stage grinding circuits According to the need of Chat

Grinding Mills - an overview ScienceDirect Topics

The crushed pebbles fall directly onto the SAG mill feed belt and return to the SAG mill. SAG mill product feeds two parallel ball mills of 6.6 m×11.1 m (internal diameter×length), each with a 9.7 MW twin pinion drive. The ball mills are operated at a ball charge volume of 30–32% and 78.5% critical speed.

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

SAG mills grinding media includes some large and hard rocks, filled rate of 9% – 20%. SAG mill grind ores through impact, attrition, abrasion forces. In practice, for a given ore and equal processing conditions, the AG milling has a finer grind than SAG mills. How does a sag mill work?

Gearless Mill Drive Protection Improvements and Its ...

A cycloconverter-fed gearless mill drive is a drive system that has hardware and software protection functions to protect the equipment in case of abnormal operating conditions, malfunctions or ...

sag mill vibration - CR4 Discussion Thread

Jul 21, 2009  I'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, we already check-up bearing clearances and bearing as a whole but still to no avail. we already try to reduce the rpm of the mill but nothing happened.

High vibrations on a ball mill AMP Maintenance Forums

Jan 21, 2011  Hello everyone, I have a problem with high levels of vibration at the supports of the pinion (fixed and floating bearings) of the cement ball mill. The kinemantic scheme with the measurement locations and several representative spectra and timewaves are in the attched file.

ball mill girth gear high vibration problem case study

cement ball mill girth gear manufacturer gujarat - crushing ... Iron Ore Sag Mill ... Troubleshoot In Cement Mill Gear Box - How Much Crusher ... A cement mill had its Girth gear (which is a huge gear surrounding the mill body, and ... high vibration (up to 14 mm/s rms . ... align rotary ball mill - rock crusher and mine solution . Read more

(PDF) Acoustic emissions monitoring of SAG mill performance

The PSD from multiple revolutions of AG/SAG mill surface vibration data has been shown to be a good bulk spectroscopic inferential measure (particularly in terms of frequency band power) of what ...

Ball Mill Maintenance Installation Procedure

We sight herewith the most common problems, with their solutions. No. 1 – GEAR AND PINION VIBRATION. Cause A – EXCESSIVE BACKLASH. Move mill gear toward the pinion and check for proper backlash per separate instructions. Cause B – INSUFFICIENT BACKLASH.

troubleshooting for high vibrations in ball mill

ball mill vibration problems. Grinding in ball mill generates high-intensity vibration and is too complex on , in analyzing the Vibration features of the ball mill , 4 Problem Formulation , speeds using a gear reduction unit and often have vibration problems , ball mill Figure 12 [1] shows an industrial ball mill The two types of tumbling mills.

Grinding Mill Foundations

Sep 23, 2014  Most 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).

INTELLIGENT GEARING SYSTEM – SOLUTION TO

The mill drive system consists of the main mill motor, the main reduction gear box, mill pinion and girth gear. The mill is also equipped with a barring drive which is either connected to the main drive reduction unit or alternatively mounted at the back of the main motor. Refer to Figure 2 for a schematic of the mill

Gearless Mill Drive Protection Improvements and Its ...

A cycloconverter-fed gearless mill drive is a drive system that has hardware and software protection functions to protect the equipment in case of abnormal operating conditions, malfunctions or ...

Axial Vibration Cement Mill Gold Electrolysis Process

Cement Mill Sinoma Technology Equipment Group CO,LTD Flow valve Vertical Roller Cement Mill is a new type roller mill developed and designed by Sinomatec, which is The grinding table lining plate and the grinding roller sleeve is made byabout problem of cement mills pinion vibrationsball mill drive motor bearing vibration - rabiorgin sag mill ...

Simultaneous measurement groups in SKF @ptitude Observer 9

Figure 1 shows a dynamic analysis by ODS, detecting high deflections (the red area) in the pinion bearing housing of a semi autogenously grinding (SAG) mill. This problem occurred when the company increased the production (i.e., load) in the SAG mill. The root cause to the problem was that this mill was not designed to operate at such a high load.

Sag Mill Pinion Failure - mayukhportfolio.co

In 1998 the world's largest SAG mill and two of the world's largest ball mills were .... was determined by deducting the installed ball mill pinion power of 7.95. kWh/t from ..... (total intermittent failure) have contributed to the problem.

Alphatec Egnineering SL - SAG mill complete foundation ...

The project was part of a major intervention at two grinder lines, where we repair the concrete, replace all anchor bolts, inject resin into the foundation, and epoxy grout different components on two SAG mills (8,5 m ø x 3,8 m @ 11 rpm) and two Ball mills (5.2 m ø x 8.0 m @ 14 rpm) drive system.

Omar Jaldin - Principal Advisor Condition Monitoring - Oyu ...

- Manage condition monitoring techniques such as Vibration Analysis, Thermography in piping ball mills pinion, Oil Analysis for concentrator equipment, 3D laser scanning in Mills and Crusher liners and UT Thickness - Improve SAG Mill liners design to increase the availability of the plant

sag mill vibration - CR4 Discussion Thread

Jul 21, 2009  I'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, we already check-up bearing clearances and bearing as a whole but still to no avail. we already try to reduce the rpm of the mill but nothing happened.

Sag Mill Pinion Failure - mayukhportfolio.co

In 1998 the world's largest SAG mill and two of the world's largest ball mills were .... was determined by deducting the installed ball mill pinion power of 7.95. kWh/t from ..... (total intermittent failure) have contributed to the problem.

BALL MILL GEARBOX PROBLEM - Vibration

table 1 - ball mill shaft speeds, expected forcing fault frequencies ball mills, forcing frequencies (cpm) shaft speeds 1x rpm motor speed 1,191 ball mill pinion speed 226 ball mill gear speed 18 gearbox (between motor ball mill) nb ftf bsf 2x bsf bpfo bpfi input brgs, skf#22330 15

Gearbox Condition Monitoring - Understanding Dynamic ...

SAG Mill Pinion. It’s a dual drive Mill. It’s not gear defect or bearing related. We’re thinking it may be process related. If anyone has experience resolving this type of vibration on SAG Mills or Ball Mills, let me know. Thanks. 0. Reply. About the Author.

axial vibration of ball mill pinion

The test and study work showed that a single line 42 ft SAG mill circuit gave the most favorable .... designed at 18% ball safety, mills operating at maximum 12% balls get 6% ball safety, while ... Figure 4 – Vibration “stress relief” .... inherent within a conventional mill drive system, such as ring gear, pinion, gearbox, coupling...

Time synchronous averaging of ball mill vibrations ...

Jan 01, 1989  FREQUENCY ANALYSIS OF VIBRATION Vibration measurements were taken on the feed end bearings of the considered ball mill pinions. The dB amplitudes of vibration for all of the velocity spectra are referenced to 8 mm/sec. Figure 3 presents the vibration spectrum of pinion 1A in ball mill 6. Gear mesh frequency and sidebands are marked.

troubleshooting for high vibrations in ball mill

ball mill vibration problems. Grinding in ball mill generates high-intensity vibration and is too complex on , in analyzing the Vibration features of the ball mill , 4 Problem Formulation , speeds using a gear reduction unit and often have vibration problems , ball mill Figure 12 [1] shows an industrial ball mill The two types of tumbling mills.

SAG 2001 COMMINUTION APERS

SAG mill base power was estimated from pilot plant data at 7.8 kWh/t, the basis was a SABC circuit of 8% ball charge. Maximum SAG mill power was determined by deducting the installed ball mill pinion power of 7.95 kWh/t from the maximum overall circuit power of 16.7 kWh/t to give 8.75 kWh/t. Overall power for the comminution circuit (SAG plus ...

Axial Vibration Cement Mill Gold Electrolysis Process

Cement Mill Sinoma Technology Equipment Group CO,LTD Flow valve Vertical Roller Cement Mill is a new type roller mill developed and designed by Sinomatec, which is The grinding table lining plate and the grinding roller sleeve is made byabout problem of cement mills pinion vibrationsball mill drive motor bearing vibration - rabiorgin sag mill ...

Joshua Rasal - Condition Monitoring Technician - Ok Tedi ...

Apr 26, 2017  Job experience.-Carry out PM Tasks (Vibration Data collection for analysis Using AMS 2140 Machinery)-Carry out Weekly Thermography Survey Using FLIR E50 camera (Thermal data collection on SAG pinion,Girth,Gear box

Benefits of continuous data acquisition from critical ...

Once the oil was changed, the vibration did not increase any further. The mill has been in operation one year since the lubrication problem was detected at an early stage Case 2) asset analytics system installed to overlook two (2) GMDs of 38 feet (~11.6 m) diameter SAG mill drives; in a remote location, recording simultaneously data of relevant

Case Boliden Autogenous Mill Application 131017

finally a SAG mill is a combination of a ball mill and an autogenous mill. In an autogenous mill, the ... 28 transducers are used to cover the entire mill; twenty shock pulse and eight vibration transducers. Also, two RPM probes are mounted on the drive shafts. ... Pinion gear Fig. 3 The autogenous mill

Mill Pinion Failure Modes - mayukhportfolio.co

Sag Mill Pinion Failure Modes-India CrusherMill. sag mill pinion failure modes; Water Words Glossary - NALMS - North American Lake Management ... A water right which has not been put to Beneficial Use for generally ...

Purchase of New SAG Mill from First Majestic Silver Corp

The purchase of a complete new SAG Mill Package sizes the mill at 2,300tpd or 0.8Mtpa with the existing motor. The installation of a larger 4,100 kW motor could allow a daily throughput rate to ...