Sag Mill Syncronis Motor high axial vibration non drive ...
On site we have a Sag Mill Driven by a 5500KW Motor. We have a vibration issue right across the Mill. The highest vibration is 30mm/sec RMS axial on the motor non drive end bearing.(White metal Bearing) The gear mesh frequency is 4200 CPM. The dominant frequency is 2400 CPM.
largest sag mill - eaglesguestfarm.co.za
the worlds largest geared grinding millKnow More. Ring gear drives huge grinding mill Mechanical Drives content from - the worlds largest geared grinding mill Mar 1 2000 - In short it will be the largest mill in the world Following the SAG mill will be two 9 000-hp ball mills each one 20-ft in diam and 331/2-ft long World s largest manufactured mills by CITIC HIC and installed at...
Update On JHEP SAG Mill Drive Selection | PDF | Gear ...
All parameters above are good for a 22.5MW to 24MW dual pinion SAG mill drive. Changes to AGMA standard have revitalised the large gear cutting industry and soon a machine shop in Holland will be able to fabricate gears of the following parameters: 20 meters in diameter = 65.6 feet 1.5 meters in face width 400 tonnes of machined weight.
Ring-geared mill drives - Grinding | ABB
Mill application features. Frozen charge protection – Detects frozen charge in the mill, minimizing equipment wear and liner replacements.; Coupling supervision – Detects if a failure or slippage occurs in the couplings and stops the system in case, preventing major damages.; Stand-still detection – Prevents the motors from re-starting if the mill is still rocking or moving after a stop ...
Flexible milling and grinding solutions that last | FL
Autogenous (AG) grinding mills involve no grinding media as the ore itself acts as the grinding media. Our ball mills are the most robust design in the industry, available with either geared or gearless drive arrangements. The cost-effective FT Series mills are smaller, gear driven …
World’s first trunnion-supported stainless steel mill ...
The company believes that it will be the largest SAG iron gear-driven mill in Africa and among the largest gear-driven mills in the world. “In the challenging economic climate, large gear-driven ...
SAG Mill - Semi-Autogenous Grinding Mill
The power to spin the mill comes from large electric motors coupled to mill shell through a clutch and gear system. These electricity consumed by these motors is the largest cost and inefficiency. ... The mill is driven by two GE horizontal synchronous variable speed motors, ... The SAG mill and all other grinding equipment is remotely ...
FL to deliver world's largest gear-driven mills ...
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.
largest sag mill - dusonjoly.be
Girth Gear Asset Management and Engineering Servic Global Gear has hands on experience and industry specific knowledge from working with some of the world's largest ball / AG / SAG mill drives, and kiln / dryer transmissions driven by gears over 40 feet in.
Ring gear drives huge grinding mill | Machine Design
Ring gear drives huge grinding mill. March 1, 2000. By this summer, a grinding mill that is bigger around than a Boeing 747 will turn chunks …
SAG Mill Variable Speed Drive - 911 Metallurgist
This drive train has been well proven over many years of service as a fixed speed drive and offers major benefits over any other arrangement. As mill size increased above approximately 4,476 kW (6,000 hp), the limits of gear technology were reached and it was no longer possible to drive through a single pinion.
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
SAG MILLING NEWS FFE to Supply World's Largest - Canadian ...
FFE gives the mill details thus: 8.23 metres inside shell diameter; 12.19 metres effective grinding length; 12.8 metres between flanges; and dual 7,000 motors. That makes it the largest low-aspect, dual-pinion gear-driven mill ever to be designed and built. The new mill has an annual throughput of 4.2 million tons of ore.
(PDF) Autogenous and Semi-Autogenous Mills, 2015 Update
It is expec ted that large gear driven mills will approach 12 – 14 MW for single drive systems and 24 – 28 MW in dual drive systems. GMD’s are currently preferred at these high power inputs for
Gearless mill drives - ABB
• 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 ...
SAG mills - Outotec
Gearless mill drive (GMD) technology has further expanded the use of large SAG milling allowing Outotec to produce the world's largest SAG mill of 42’ in diameter drawing power at 28 MW. Today, Outotec is the world leading supplier of gearless SAG mills operating globally. Premier™ horizontal grinding mills - Engineered to excel.
Siemens modernises SAG mill gearless drive in Cadia Valley ...
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. Siemens has now fitted the SAG mill with a Sinamics SL 150 cycloconverter for closed-loop control as well as with a Sinamics DCM control module for the excitation circuit – the first time that both ...
SAG Mill | Autogenous and Semi-Autogenous Mills | FL
Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. Fuller-Traylor SAG/AG Mills range in size from 4.3m through 12.2m in diameter with powers as high as 28,000 kW.
braking the world s largest ball mills
The mills will be the largest gear-driven mills in the world , and two ball mills The mills will be the largest , deliver world's largest gear-driven mills. ... Mills and GMDs Maarten van de , (no ball mill after the SAG mill) and , These, which have the world’s largest volume, are solely AG mills, ie no ball charge. Live Chat. braking the ...
Northern Star orders Outotec Premier SAG mill
The gear-driven Premier SAG mill to be delivered will feature 18MW of motor power, added Christoph Hoetzel, grinding business head at Outotec. The Thunderbox gold mine is located in the Yandal Belt. Source: Outotec
Gearless Mill Drives | Beneficiation | Siemens Global
Benefits of continuous data acquisition from critical large drive systems in a mine operation (SME 2016) Frozen charge detection and automatic loosening with gearless mill drives (SAG Conf. 2015) Mill drives: the desire for increased power and the associated limits and conditions (SAG …
Outotec to supply a high-capacity Premier SAG mill ...
Northern Star’s selection of Outotec for the mill supply is supported by their locally based expertise, large mill supply history and ongoing collaboration with Northern Star.” “We are pleased to be chosen as a supplier for the Thunderbox expansion. The gear-driven Premier SAG mill to be delivered will feature 18MW of motor power.
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, which began operation in 1995. The reason for not having larger gear drives
Outotec to supply a high-capacity Premier™ SAG mill ...
Northern Star’s selection of Outotec for the mill supply is supported by their locally based expertise, large mill supply history and ongoing collaboration with Northern Star.” “We are pleased to be chosen as a supplier for the Thunderbox expansion. The gear-driven Premier™ SAG mill to be delivered will feature 18MW of motor power.
SUPPLY, INSTALLATION, & COMMISSIONING OF THE …
In June 1998, the world's largest grinding mill, the 40 ft (12.2 m) diameter 20 MW Cadia gearless SAG mill, was commissioned. This was a leap of over 40% above the largest operating SAG mill. A significant saving in capital cost gave the incentive necessary for a single mill line at Cadia, resulting in the selection of the 40 ft (12.2 m ...
SAG Mill Variable Speed Drive - 911 Metallurgist
This drive train has been well proven over many years of service as a fixed speed drive and offers major benefits over any other arrangement. As mill size increased above approximately 4,476 kW (6,000 hp), the limits of gear technology were reached and it was no longer possible to drive …
Lrs And Ser For A Sag Mill, Ball Mill - Eurocentrum Bistro
Ring Motor Sag Mill. Ring gear drives huge grinding mill this mill uses a ringmotor drive figure 5 the sag mill is followed by in a ball mill the pinion is reversed after pinion on sag mill luigispizzapastashawano pinion gear sag mill girth gears or the singlehelical sag mill girth gear designs at the moment with dual pinion mills up to america for
Mining Weekly - Leading in grinding mill technology
“Many of the largest plants oper- ating today have our world-re-nowned SAG and ball mills,” he remarks. ... which is a mech-anical protection device for use on gear-driven SAG and ball mills ...
Global PAM Team - Global Physical Asset Management, Inc.
William is an expert in the engineering, design, manufacture, installation, inspection, and maintenance of large gear drive systems. William has hands on experience and industry specific knowledge from working with some of the world’s largest ball/AG/SAG mill drives, and kiln/dryer transmissions driven by gears over 40 feet in diameter.
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