Ring gear drives huge grinding mill | Machine Design
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 ...
PRODUCT NEWS: THE WORLD’S LARGEST SAG MILL
manufacture of a Ø40’x29’ SAG mill. The mill will be driven by a Gearless Motor Drive (GMD) which, at 28.0MW, is equal to the largest grinding mill power ever used in the mining industry. The SAG mill design is based on Outotec’s proprietary grinding mill technology, developed over decades for maximum reliability and performance.
FLSmidth to deliver worlds largest gear-driven mills ...
Nov 17, 2011 · The contract includes delivery of a 76,000 tonnes per day grinding circuit consisting of two very large SAG mills and two ball mills. The mills will be the largest gear-driven mills in the world.
Innovative Gear Drive Solution for Grinding Mills | E & MJ
The ball mill measures 8.2 x 14 m; in terms of power—transmitted by mechanical gear drives—it is considered one of the world’s largest, if not actually the world’s largest, horizontal mill, driven by two Siemens type 1RR5108-6FA90-Z three-phase asynchronous motors with slip ring rotors, delivering an output of 9 MW each.
Preprint 13-050 - ceecthefuture.org
ultrasonic testing have improved the overall gear-set design capability. Some consultants have the view that the gear drive is limited in power. Mr Craig Denecki (Falk Milwaukee) in his paper, presented at the 1996 SAG mill conference, provided details of the then largest gear drive in operation on a SAG mill (34ft x 18ft) at Escondida 13.4MW ...
OUTOTEC GRINDING TECHNOLOGIES
single-stage SAG mills to the largest mill in the world – with a 40-foot diameter and 28 MW of motor power. Ball mills Ball milling is the most common application for horizontal tumbling mills. Outotec offers a full range of ball mills to suit a wide variety of duties, from a few hundred kW all the way up to 20 MW and beyond. Rod mills
INNOVATION NEWS Mills and GMDs - ABB Ltd
time the mill volume also increased. Typically a SAG mill has a much larger diameter compared to its length. Yet the SAG mill of Newmont’s Yanacocha mine in Peru is a single stage mill (no ball mill after the SAG mill) and has a diameter and length of 32’, driven by a 16.5 MW GMD from ABB. Above the Arctic Circle in Sweden, Boliden
SAG Milling in Australia -Revised Submission
the range of gear driven mills to a theoretical limit of 32 MW. 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.
Siemens modernises SAG mill gearless drive in Cadia Valley ...
At the Cadia Valley Operations, Newcrest operates two underground mines and one open pit mine. Ore is processed to a heavily auriferous copper concentrate in a crushing, grinding and flotation circuit. This two-stage grinding circuit consists of a 40 ft SAG mill with a 20 MW Siemens gearless drive and two parallel 10 MW gear driven ball mills.
Paper # 25 - Copper Mountain Overview on the Grinding ...
had delivered several projects where the scope has been the GMD for the SAG mill, but was often not awarded to supply the gear driven ball mill motors. ABB then decided to enter also the market for the dual pinion mill drives. Initially ABB evaluated what was already available for gear driven mills. First of all it
My Gear is Bigger than Your Gear - Gear Technology
SAG mill gear set at the Los Bronces Copper Mine. “We also have two Detour Lake SAG mill gear sets, at 13.4 meters,” Rhody says. “Additionally, there are five others with diameters between and 13 13.2 meters. In terms of mill power, two of these have a total mill power of 24,138 hp. There are three other ball mill gear
Grinding mills - liming
Every mining operation has a unique grinding process. liming has experience of over 8,000 grinding mills globally, including manufacturing and delivering the largest SAG/AG mills in the world. Our experts welcome the opportunity to assist you with circuit and circuit control design as well as start-up, operation, and optimization of your mill.
sag mill ring gear failure - BINQ Mining
Feb 02, 2013 · sag mill ring gear failure – Grinding Mill China. sag mill ring gear failure.Posted at: October 25, 2012 [ - 6330 Ratings] … Sag Mill gear failure – OneMine Mining and Minerals Library … »More detailed
largest ball mill world - restaurant-la-luna.de
FLliming to deliver worlds largest gear-driven mills | MINING . Nov 17, 2011 ... The mills will be the largest gear-driven mills in the world. ... per day grinding circuit consisting of two very large SAG mills and two ball mills.
Sag Mill Drives: Girth Gears At 18,000 Hp
ball mill girth gear alignment, akms : major projects. sag mill drives: girth gears at 18,000 hp operation and performance. this stone was originally presented at the vancouver sag mill conference in 1996. reducing the fatigue life of a girth gear.
Innovative gear drive solution for grinding mills. - Free ...
Dec 01, 2014 · The ball mill measures 8.2 x 14 m; in terms of power--transmitted by mechanical gear drives--it is considered one of the worlds largest, if not actually the worlds largest, horizontal mill, driven by two Siemens type 1RR5108-6FA90-Z three-phase asynchronous motors with slip ring rotors, delivering an output of 9 MW each.
GRINDING MILLS Poised to take on any commodity
delivered the largest diameter gear-driven mill in Africa which also carries the world’s largest spheroidal-graphite iron gear ever manufactured. The design and technology has room to go larger still, with gear-cutting facilities now allowing up to 16 m diameter. Despite its signifi cant foothold in Africa, the company continues to grow
Farnell-Thompson
For their largest, most recent North American Phoenix project, Newmont Gold elected to procure their one 36 gearless driven SAG mill and two 21 gear driven ball mills through Farnell-Thompson. Estimated savings on capital equipment were about 20%.