### Paper # 25 - Copper Mountain Overview on the Grinding ...

COPPER MOUNTAIN: OVERVIEW ON THE GRINDING MILLS AND THEIR DUAL PINION MILL DRIVES ... SAG mill, ball mill, ring gear, dual pinion, drive systems, variable speed ... a short circuit on the motor terminals that could cause severe damage to the gear, pinions, bearings and mill. ...

### Mill Lubrication System - SlideShare

Parts of Ball Mill to be lubricated: Trunnion bearing Feed end Gearbox Trunnion bearing Dis. end Pinion Fig.2 : Ball Mill diagram. Motor 21. Gathered Data: This were the alarm gathered during my stay in the Mill. MILL ALARM DATE Diff. High Pressure Trunnion Feed End April 20, 2013 SAG Bearing Recirculation Oil Inlet Temp.

### removing sag mill liners - hellfirepass

sag mill pinion damage - curesiddhaclinic. removing sag mill liners. With the big liners on the bottom of the chute you need to get a sag mill feed chute, detecting sag amp; Sag Mill Pinion Damage . Ball Mill Maintenance & Installation Procedure.

### Ring gear drives huge grinding mill | Machine Design

The SAG mill is followed by two 20-ft diam., 7,500-hp gear-driven ball mills. ... In a ball mill, the pinion is reversed after teeth become worn on one side. 0 comments. Hide comments.

### overgrinding in sag mills - thebakerytorino

overgrinding mill damage - chinese-for-eu . overgrinding in sag mills . overgrinding mill damagenoibuffalo. Mill] SAG Mill Drives: Girth Gears at,HP The, girth gear damage of a SAG mill, Sag Mill Pinion Failure; ... Get Price >> ball grinding mill ontariocuresiddhaclinic . over grinding mill damage in mississauga canada.

### ball mill pinion alignment - ciessearredo

ball mill girth gear radial axial alignment procedure. Sag Mill Syncronis Motor high axial vibration non drive end . Nov 1 2014 The pinion and girth gear yes are worn but thermo graphic and visual . to produce high electromagnetic airborne noise and radial not axial housing The alignment between the motor and pinion shaft through the air clutch has . there can be more Tons/hour and can be more ...

### COMMINUTION '10 - SAGDesign

commercial grinding conditions for the test in a 0.5 m diameter SAG mill. In the 2009 database, SAG pinion energies (to grind from F80 152 mm to T80 1.7 mm) vary from 1.4 to 34 kWh/t and Bond ball mill work index values vary from 6 to 24 kW/t for the same ores. Project design tonnages varied from 200 to 150,000 t/d, SAG mill sizes varied from 10 ft

### types of charges in the sag mill - perkinspreschool

Nov 27, 2017· flow within a SAG mill grinding chamber (ignoring the solids charge), flow through the. ... Other costly types of damage that occur from falling charge, although less frequent, are cracks in the mill heads and shells. LOCKED CHARGE. ... Overview on the grinding mills and their dual pinion mill drives. charges on the ore by the owners ...

### sag mill pinions - spirosurvey

24 X 9 BOLIDEN-ALLIS 3000HP SAG MILL, Mill Pinion Gears Our high torque, high precision integral and non-integral mill pinions are used in SAG, . Chat; Sag Mill Pinion Damage - mayukhportfoliocoin. Sag Mill Pinion Damage ball mill alignment, David Brown can manufacture high torque, high precision integral and non-integral mill pinions for SAG ...

### reasons for ball mill bearings failure - Mine Equipments

Locked charge starts and your grinding mill - Outotec 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 ...

### Milling - Energy intensive and high maintenance

The method of powering mills such as AG, SAG and Ball has a long and technically interesting history. It can be said that almost every ... Dual Pinion Drive. SINGLE AND DUAL PINION MILL DRIVES ... bearing damage from circulating currents, bearings are electrically insulated. The shaft is grounded to avoid static charges of the stator.

### GIRTH GEAR - artec-machine

Two-pinion girth gear drive Fig. 2A 1 Annulus, 2 pinions 2 Reducing gears, each 2-stage 2 Main motors ... Damage to mill cylinder, neck or stub endanger girth gear and pinion. ... Elastic mill sag by weight of mill balls and materia! to grind

### sag mill ball mill - mine-equipments

reduce packing and ball/liner damage, and to use larger, hence fewer, mill liner ... Tenova Bateman Mills ... Overview on the grinding mills and their dual pinion mill drives The grinding process with one 34' x 20' SAG mill and two 24' x 39.5 ... This SAG mill trunnion bearing lubrication system was custom built for our customer's ...

### Ball Mill Pinion - mbokodoinns

Ball Mill Pinion; Gearless AG/SAG mills - Removal of limits of design power gear and pinion drives are practically limited to about 10,000 hp per pinion. at this time, there is no reasonable gear drive alternative for more than two pinions or above 20,000 hp. the best solution is the gearless mill.

### ore dressing ore sag mill pinions - durbanlizards

sag mill and pinion Guinee Ecologie. To ensure timely processing of your information, be sure to accurately fill out your ... A high ratio of ore to ball charge in a ball mill ring gear and the pinion. Contact US. AG Autogenous & SAG Semi Autogenous Mill Design Calculations.

### ball mill pinion alignment - ciessearredo

AC align ball mill pinion sag or regrind mill gears and pinions of any gear . Ball Mill Pinion and bearing replacement Ball Mill Pinion Alignment Pdf. Get Price. ... It was found that the only way to stop the whereas the damage on the other ball mill gears was on the non-drive side. Contact Supplier

### NEW LOCKED CHARGE PROTECTION SYSTEM PREVENTS .

NEW LOCKED CHARGE PROTECTION SYSTEM PREVENTS DAMAGE TO 14MW GEARED MILL. ABSTRACT The 14MW SAG mill at Tarkwa, Ghana, experienced a frozen drop charge incident on 10 February 2010. This caused downtime of 112 hours, a repair cost of $200k and production loss of 162,000 tons, corresponding to a loss of $8.9M.

### how to align a ball mill pinion and girth gear

2017-2-23 Gear cutting of a split girth gear for a cement mill having an input power of 2200 HP 5. Separate mill A: Damage to mill cylinder, neck or stub endanger girth gear and pinion. Repairs entail extra work for girth gear dismantling. B : Damage to mill cylinder cannot endanger gear teeth. Mill repairs do not entail gear dismantling.

### sag mill 3 66 1 34 - aelabworld

Jul 23, 2018· The SAG mill pinion energy is determined from the SAGDesign testwork results as follows W SDT = revs (16,000 + m s)) / (447.3 m s) where W SDT = AG/SAG Specific Pinion Energy from a F 80 of 152.4 mm to a T 80 of 1.7 mm, kWh/ton ground revs = Cumulative number of SAG test mill revolutions to 80% passing 1.7mm m s = SAG mill feed sample

### Trunnion Bearing Assembly Ball Mill & Rod Mill

Metallurgical ContentBall Mill TRUNNION BEARINGSTrunnion BRONZE BUSHINGSTRUNNION BASE AND CAPBall Mill LUBRICANT JACKSBall Mill PINION SHAFT BEARINGS The first part of the mill that we will look at is the TRUNNION BEARING. ... Trunnion Bearing Assembly Ball Mill & Rod Mill View Larger Image ... affording the greatest protection against damage ...

### SAGDesign Test | Starkey and Associates Inc.

The calculated cumulative mill revolutions to 80% passing 1.7 mm is used together with the mass of the SAG mill charge to compute the SAG mill specific pinion energy, as seen below. The process to determine the revolutions is done in cycles, with the -1.7 mm material (fines) removed from the mill after each cycle up to 60% passing 1.7 mm.

### Gearless AG/SAG mills -

Gearless AG/SAG mills. With the proven use of gearless drive technology, the limitation of AG/SAG mill size due to gearing constraints has been eliminated. is the world's leading supplier of gearless AG/SAG .

### GROSS POWER CALCULATOR - SMC Testing

GROSS POWER CALCULATOR General ... the so-called "power at pinion", which is slightly lower than the gross power and relates to the power as ... Pictures of the insides of an AG mill and a SAG mill which have been crash stopped are shown in Figures 5 and 6 respectively. Accurate measurements of the ball filling can only be made after the ...

### Autogenous mills, semi-autogenous mills and ball mills for ...

Autogenous mills, semi-autogenous mills and ball mills for wet grinding. A company of Polysius ThyssenKrupp ... Two SAG mills with rigid pinion drives. SAG mill ... caused by mill sag, thermal distortion and manufacturing tolerances. Hydrodynamic or

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