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Discussing this new range of products, Calver explains that the Impactmeter (patent pending) is an acoustical instrument developed for the purpose of monitoring impacts inside a SAG mill, ensuring ...

The resulting mill design was 6.1m dia x 9.05 EGL SAG Mill with a 5.2MW ... with an identical structure, trunnion bearings, girth gear, pinion and pinion bearings. ... design, manufacture, installation, maintenance and failure analysis of heavy...

On this site, the most critical was the semi-autogenous grinding (SAG) mill, which runs 24/7 with a full load. At the moment, because the life of the mine is limited, they are running at full production, occasionally overloading the mill. When the mill stops, the production cannot be recovered, and it is the only mill on the site.

The biggest characteristic of the sag mill is that the crushing ratio is large. The particle size of the materials to be ground is 300 ~ 400mm, sometimes even larger, and the minimum particle size of the materials to be discharged can reach 0.1 mm. The calculation shows that the crushing ratio can reach 3000 ~ 4000, while the ball mill's ...

Horsburgh & Scott identified an input worm gear pinion and worm gear that were out of alignment during operation. Horsburgh & Scott's Field Service Team performed a tear down of the input pinion to identify the root cause of failure. They determined the root cause was the bearing orientation allowing for shaft movement.

drive application is a dual-pinion SAG mill driven by two 5,000 kW wound rotor induction motors (WRIM). Two TMdrive-10SPRs control motor speed by recovering rotor current and returning the power to the utility supply. Confi gured in a twin motor arrangement, the motors share load in the tandem mill. The Customer Need

The dual pinion drives can come out of sync due to power problems or disturbances in the motor control system. Frozen charge inside the mill might cause torque peaks or consequential damage. Grinding Ball/Sag/AG Mill, Roller Press HPGR/HRC. 15 2 Challenge If the large pinion-shaped cutter is blocked, vital parts of the

drive application is a dual-pinion SAG mill driven by two 5,000 kW wound rotor induction motors (WRIM). Two TMdrive-10SPRs control motor speed by recovering rotor current and returning the power to the utility supply. Configured in a twin motor arrangement, the motors share load in the tandem mill. The Customer Need

reduce packing and ball/liner damage, and to use larger, hence fewer, mill liner parts to reduce downtime at liner change-outs. Key words: Comminution, Grinding, SAG mill, Mill liners Paper number MMP-07-002. Original manuscript submitted online January 2007. Revised manuscript accepted for publica-tion April 2007.

sump. The Ball mill will operate in closed circuit with a cluster of cyclone classifiers. Provision will be made for a portion of cyclone underflow to be recycled to the SAG mill feed if required. The ultimate capacity of the grinding system is 600 dry tph …

Production at Yaramoko was below plan for the quarter, and unplanned downtime due to the premature changeout of a SAG mill pinion bearing in August contributed to lower mill throughput. Further, resequencing of production stopes at the 55 Zone, due to isolated ground conditions causing bridging, which resulted in a reprioritization of lower ...

By combining with SAG discharge and screening on the SAG discharge screens, top size control to the ball-mill circuit feed is maintained …

2.SAG mill Golgohar mineral and industrial company has three processing line of iron ore concentrate and there is a semi-auto genius mill (dry mill) with power 3 Mw in each one. These mills are categorized as vital equipment and any problem of them could lead to processing line down time. Figure 1 shows Schematic view of dry mill.

A locked charge detection system can be used to prevent a dropped charge and structural damage to your mill. Our retrofit includes a pinion shaft encoder that measures mill velocity and position at start-up, as well as a control panel with a program logic to disengage the clutch when a locked charge is detected.

Ball Mill AG/SAG Mill min max min max DESIGN DATA diameter inside shell (m) 0.9 7.9 1.8 12.2 belly length inside liners (m) 1.5 12.2 0.5 9.6 liner thickness (mm) 51 152 51 152 diameter inside shell (ft) 3 26 6 40 belly length inside liners (ft) 5 40 1.5 31.5 liner thickness (inch) 2 6 2 6

The largest ringmotor- driven mill in the world is a 36-ft diam., 16,000-hp SAG mill that processes up to 2,000 tons of ore per hour. Located at Kennecott Utah Copper near Salt Lake, this mill ...

Clarabelle Mill SAG, Rod & Ball Mill Pinion Gear Thermal Acceptance Criteria General Industry Acceptance Guidelines for this size and gearset is as follows:* A. 25 degree Celsius differential across the teeth of the pinion face will most likely result in premature wear and pitting. (serious, shutdown and inspect).

The SAG mill agreement has come about as First Majestic ordered a complete new SAG mill package, which, Condor says, is now superfluous to its requirements. The SAG mill has a mill diameter of 24 ft (7.3 m) and an effective grinding length of 18.5 ft and a structural charge mass of 315 t, Condor Gold said.

The clutch's primary role on the dual-pinion, direct-drive geared mill is to provide smooth starts during mill startup. When the mill is running, the clutch also serves as a torque "circuit breaker," reducing costly repairs and downtime by protecting the pinions and ring gear from potential damage caused by large pieces of grinding material.

This white paper focuses on the work carried out by Alphatec Engineering in the rehabilitation of the mounting system (concrete foundation, anchoring, and grout) of a pinion-bearing pedestal of an 8,5 m ø x 3,8 m semi-autogenous grinding mill …

SAG mill feed size distribution – we work with clients to ensure mill ball to rock ratio and ball size can be compensated to counter lack of coarse breakage in high competency ores, to improve ...

The clutch's primary role on the dual-pinion, direct-drive geared mill is to provide smooth starts during mill startup. When the mill is running, the clutch also serves as a torque "circuit breaker," reducing costly repairs and downtime by protecting the pinions and ring gear from potential damage caused by large pieces of grinding material.

Elastic mill sag by weight of mill balls and materia! to grind A: After temporary alignment of the teeth of pinion and girth gear with the mill empty, Fig. 8a, re-alignment should be undertaken with the mill filled with mill balls, i. e. with reference to the elastic sag in cold con- dition, Fig. 8b.

damage or personal injury, proper tensioning, and maintenance of proper tension through out the life of the belt. Placing Belts on Sheaves Shorten the center distance of the drive until the belts can be put on the sheaves without forcing. Forcing the belts can cause internal injury to the belts. (Refer to Tables 1 and 2 for values.)

The SAG mill will be a 9.75 m x 6.86 m EGL variable speed mill fitted with two 6.75 MW twin pinion drives. The SAG mill will be installed with discharge grates which will allow slurry and small pebbles to pass out of the mill. The SAG mill product will flow to a double deck vibrating screen for pebble separation.

The Contender™ Series is our newest line of premium spare parts for non- grinding mills. The line includes grinding mill heads, shells, gears and pinions, main bearings, trunnions, trunnion liners, and more for select machines. For certain designated parts, additional enhancements have been made for increased safety and reliability.

Sag Mill Pinion Damage arbeitsvertragstuttgartde. Sag Mill Gear Inspection Services Mill Pinion Gears Our high torque high precision integral and nonintegral mill pinions are used in SAG horiontal ball mill and rotary kiln applications across the globe Supplied as an individual component or as a fully optimised system comprising a girth gear ...

And whether the total pinion energy (SAG plus ball mill) was sorted by increasing SAG, or by increasing total pinion energy, the result was the same. Taking design numbers from this analysis shows that to grind to a T80 of 1.7mm (from 152mm F80) in a SAG mill will require 29.5 kWh/t in the SAG mill. When ball mill grinding is added,

china small pinion gear for ball mills and rotary kilns gear, pinion gear, worm gear manufacturer / supplier in china, offering small pinion gear for ball mills and rotary kilns, small rack and casting and forging pinion gears, spare parts for ag/sag mill, ball mill used in copper mine and so on. how to install and align the girth gear and pinion prmdrivejan 14, 2020 ·there are two kinds of ...

Basically they support equipments like motor, reducer gears, pinion drive blocks and mills with girth gears. A portion of Sag mill foundation is a wall almost 10m x 2m x 8.2m in height. It is coupled with mill foundation system consisting of four wall columns braced by two tier beams to support two end bearings of rotating mill.

Overview on the grinding mills and their dual pinion mill drives mill and two 24' x 39.5' ball mills will be briefly discussed. .... on the motor terminals that could cause severe damage to the gear, pinions, ... A SAG Mill Control: ...

Ball mill : Takes the product from a rod mill or AG/SAG circuit (typical particle size of 0.5 cm and finer) grinds it to a finer size (0.1 cm or finer) usually final size. usually connected to a classifier to form a closed circuit - coarse particles are recycled to the mill for further grinding

Improvements in SAG mill components such as bearings, liners and even nuts and bolts also help operators achieve higher availability levels by extending the intervals between stoppages for routine repairs and replacement. ..., broken teeth or even complete failure of the gear and pinion. ... An FEA evaluation determines if a worn component is ...

Align Ball Mill Pinion Gears Vetura Mining machine. Ball Mill Pinion Alignment Sugar Smith Cakes May 10 2017 align ball mill pinion gears as a leading global manufacturer of crushing grinding and mining equipments we offer advanced reasonable solutions for any size get price cement mill alignment 10 may 2017 cr4 thread ball mill girth gear and pinion with all due …

Non-Destructive Testing (NDT) is the application of measurement techniques in order to identify damage and irregularities in materials. NDT often provides the only method of obtaining information about the current 'health' of process plant. If done well, NDT can provide useful information to assist in the management of plant safety. ...

Hi Observing high vibs on pressing and lifting pinion DE and NDE bearing on a ball mill. Motor and main GB drive are OK. Clear predominant gear mesh frequency is appearing in the spectrum along with harmonics and side bands. But 1st GMF is predominant. side bands with pinion speed is seen. no GG speed side band was observed Some of the vib data, spectrums and photos …

consist of a crusher followed by a SAG mill followed by a ball mill. In this context, the SAG ... rod gates and rack and pinion gates is provided before screens to permit ... dependent material damage mechanism such as fatigue, corrosion, erosion, etc. 453