wraparound sag mill failure oct

Jan 01, 2011· Jan 06, 2011· beaking bolts of sag mill. 1. making cold welding between the liner and not letting separated during maintenance. It is noted that after cold welding of the liners and following a plan change at the location of the bolts a space was designed to turn the bolt 90' for taking lainers . as a result the bolts undergo breakage. Thank you.

Oct 28, 2015· Oct 28, 2015· Lube or operational failure may have caused overheating and/or galling damage of journal surface. Other Typical, and maybe similar, reason is: Poor maintenance or operation! Contamination of lube. Washing/hosing dirt into trunnion when the feed chute leaks is another big one. The cyclone underflow tube somehow sanded and plugged to the point of ...

Mill Equipment Treatment : 55.000 tpd or 20.000.000 tpy Production : 80.000 tpy avg. of fine copper over first 10 years: 1.0 million ounces gold Primary crusher : 60" x 89" - 800 hp SAG mill : ø36' x 17' EGL - 18,000 hp (wrap around) Pebble crushers : 2 – 800 hp Ball mills : 2 – ø25' x 39' EGL - 19,000 hp

Antamina Compania Minera Antamina S.A. Peru Project: One SAG Mill and 3 Ball Mill Drive Systems Capacity: SAG Mill 1000 t/h Ball Mills 1000 t/h Consultant: Bechtel, USA Mill Builder: FFE Minerals, USA Mill Size: SAG Mill 38 feet/11,58 m Ball Mills 24 feet/7,32 m Ore processed: Copper/Zinc Drive Rating: SAG Mill 20,1 MW, 9,23 rpm Ball Mills 11,2 MW, 11,38 rpm

• 28 MW GMD for a 40' SAG mill • 28 MW GMD for 42' SAG mill Whether it is size or an installation at the highest altitude (4600 m.a.s.l.), ABB's GMDs are well positioned to contribute to the building of larger and ever more powerful mills. — Leading the gearless mill drive evolution The ABB gearless mill drive (GMD) is the most powerful ...

ball mill pinion failure - pafoseuropedirect.eu. ball mill shaft failure analysis - maksinternational.in. ball mill shaft failure analysis. CR4 Thread Failure of ShaftIt is a gear box between Ball Mill of Pulveriser and Motor The shaft has broken at the FAILURE ANALYSIS OF SHEARED SHAFT OF A BRINE Failure of Shaft-ball mill shaft failure analysis-,reasons for ball mill bearings failure ...

Oct 22, 2020· Oct 22, 2020· Tumbling mill is also known as a ball mill or rod mill. They are all composed of a cylindrical cylinder lying horizontally on the bearing, and the material is ground into powder by rotating the cylinder. When we want to discuss the factors that affect the tumbling mill working capacity, we must first know the working principle of the tumbling mill.

Jun 06, 2016· The first major commissioning failure on the SAG mill occurred during installation when the mill was inched without adequate lubricant flow, resulting in the …

Jun 06, 2016· Jun 06, 2016· The first major commissioning failure on the SAG mill occurred during installation when the mill was inched without adequate lubricant flow, resulting in the wiping of the feed end trunnion bearing. The armature, weighing 19 …

Oct 22, 2015· Oct 22, 2015· October 22, 2015 News s11_admin Cole Latimer. Latest News. ... On Saturday a problem was detected with the motor on concentrator 1 SAG mill, Newcrest said in a company statement.

Oct 13, 2019· Oct 13, 2019· Should the wraparound signal not match what FLCC commanded, the control reverts to a backup system. Without wraparound, faulty signals would lead to incorrect control surface movements, that would in turn lead to corrective action by FLCC, and should the fault in the signal delivery persist, the corrective action would of course be also wrong.

Oct 12, 2017018332SAG mill make use of steel balls included with some large and hard rocks for grinding. These mills utilize the balls in making the large fragments of materials broken into pieces. The ball charge of a SAG mill is about 9 to 20.This process takes place inside the large rotating drum of SAG mill which is filled with balls partially.

Apr 16, 2016· Semi autogenous grinding mill (SAG Mill), of Carmen de Andacollo, TECK, IV region, ChileVon Mises Stress and Deformations

Nov 11, 2018· Gearless Warp Around SAG Mill. For almost a decade now, very good operating experiences have been gained with a total of 28 gearless ring motor drives …

Jul 21, 2009· Jul 21, 2009· Repairs to a SAG mill at Chile's ndida, the world's biggest copper mine, could be finished by mid-August, BHP Billiton's head of …

Aug 11, 2009· Aug 11, 2009· Output at ndida had dwindled during the first quarter in part due to the failure of the SAG, or semi-autonomous grinding, mill, which is used to pulverize rock.

A sag mill with a 44 134m sag mills are primarily used at gold get price and support online sag mill ring gear failure iqsa sag mill pinion gear alignment motor power to the slip ring induction motor for sag mills and induction motor for the sag mill and liquid rheostat starter lrs and slip ring motor for the ball mill…

Relevant current waveforms associated with the starting of a 20 MW synchronous motor SAG mill drive are presented, as well as current and voltage waveforms during a cycloconverter commutation failure.

Sep 23, 2006· SAG mill control on two sites in Australia that have adopted the new . ... hardware points of failure. Any system developed using the ... ABB variable speed 13 MW wraparound …

Authors' final version of paper published in Minerals Engineering 22(12):1032-1044, Oct 2009 INFERENTIAL MEASUREMENT OF SAG MILL PARAMETERS IV: INFERENTIAL MODEL VALIDATION T. A. APELT*§ and N. F. THORNHILL§ § Centre for Process Systems Engineering, Imperial College SW7 2BY. Email: [email protected]

Oct 13, 2013· Pfilson commented Oct 14, 2013 This worked perfectly guess my mistake was assigning it to a vanilla recipe group, Thanks! Edit: With additional testing I think I must have just messed up the spacing or some other derp (@.@) because putting the sulfur and vanilla group back in still works...

SAG mill control on two sites in Australia that have adopted the new . ... hardware points of failure. Any system developed using the ... ABB variable speed 13 MW wraparound drive.