sag mill dual pinion geared drive
Paper # 25 - Copper Mountain Overview on the Grinding ...
DUAL PINION MILL DRIVES The SAG and the two ball mills are gear driven and Copper Mountain selected the sophisticated low speed dual pinion mill drives from ABB to drive these mills. Brief History Sophisticated Dual Pinion Mill Drive Technologies About five years ago, ABB was already the market leader for Gearless Mill Drives (GMD).
Largest GMD System Commissioned at Mount Milligan | E & MJ
ABB has successfully commissioned three variable-speed mill drive systems at Thompson Creek Metals' Mount Milligan copper/gold mine in Canada. ABB's delivery included one gearless mill drive system (GMD) for a 40-ft semi-autogenous (SAG) mill and two low-speed dual pinion ring-geared mill drive systems (RMDs) for two 26-ft ball mills; making Mount Milligan's grinding …
eKapija | ABB to Modernize Veliki Krivelj Copper Mine
The dual pinion mill drive is a variable speed technology which will effect low mechanical stress impact on the pinion and ring gear by realizing precise load sharing between the two motors of each mill, the press release says.
What's the Difference Between SAG Mill and Ball Mill ...
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 ...
SAG Mill Components - Mineral Processing & Metallurgy
The obvious solution is to use more pinions, say, four per mill, with each pair coupled to the output shafts of a special single-input/double-output reducer — two reducers and two motors per mill. The problems of load division remain in this case, both in the reducers and in the motors. Another solution is to use the so-called "gearless drive."
Horizontal Mill Pinion Drives | Beneficiation | Siemens Global
Products for SIMINE Pinion mill drives. Siemens provides high-speed drives as well as low-speed drives. Our high-speed drive solutions provide operational flexibility and full modularity. The power ranges from 100 kW to 24 MW. Our low-speed drives reduce wear and help cut energy costs by up to 5%. Offered up to 24 MW, the variable speed of low ...
Ring-geared mill drives - Grinding | ABB
Ring-Geared Mill Drives - Flexible and smooth operation - Brochure (English - pdf - Brochure) Copper Mountain: Overview on the grinding mills and their dual pinion mill drives (English - pdf - Technical publication) Measuremens at a state of the art 2x5 MW dual pinion mill drive (English - pdf - Technical publication)
TECHNICAL How to Spec a Mill Gear - Power Transmission
single- or dual-motor configurations. In this type of application, the pinion is mounted on pillow blocks driven by a low-speed motor or a motor and en-closed gear drive. The gear is mounted on the mill using a flange bolted con-nection (see Figure 2 for one type of flange installation). Both the center distance and alignment are adjustable
load sharing of dual motor grinding mill drives
dual motor grinding mill drive ... speed synchronous motor drive the ball mill, mill, Load Sharing of Dual Motor Grinding Mill Drives Cookies must be ... Preprint 13-050 - ceecthefuture Early attempts to provide load sharing on twin pinion drives used primitive ... ready for use on 2 X 10MW dual drive mills. ... gear drive grinding mill.
gearless sag mill maintenance schedules
crushers, flotation cells, geared and gearless slurry pumps and mill, Electrical Package for Mining Plan 4, Dual Pinion SAG Mill - 2x LSS Motor + Airclutch Load Sharing System, WEG's solutions reduce maintenance to a minimum.
Major Mines & Projects | Paracatu Mine
The ball mills are equipped with dual pinion gear drives. The SAG mill operates in open/closed circuit with a trommel screen and vibrating screen, and the pebbles have the option to be fed to Plant I (open circuit) or back to the SAG (closed circuit). Oversize rejects from the SAG mill are transferred to the SAG mill feed conveyor by three ...
ft sag conga - savanna-catering.de
sag mill feet diameter iron ore - haushueten-wuppertal.de. Conga The world s first 42-foot diameter 28 MW gearless SAG mill. SAG mill 40 ft 42 ft gearless mill drive GMD SAG manufacture reliability The results of these studies showed that a single line 40 ft SAG mill circuit gave the best project economics .. mill will be the first 42 ft diameter SAG mill in the world.
ABB drive systems for Canada's Red Chris gold and copper ...
ABB's complete scope of supply included two dual pinion low-speed mill drive systems for a 34', 2 x 5.2 MW SAG mill and a 24' 2 x 7 MW ball mill, engineering and commissioning. The drive systems are comprised of transformers, ACS 6000 MV frequency converters, synchronous motors, advanced mill control, operations and maintenance features ...
10579 traylor ball mill motor to pinion couplers
Dual Motor Sag Mills Beltconveyersnet. BALL MILL DRIVE MOTOR CHOICES - artec-machine com. The CCV ring motor gearless drive is used at Cadia 20 MW and Olympic Dam 18 MW It has been the industry standard for SAG mills above 13 MW capacity However pinion systems to 8 MW per pinion and dual motor systems with quadruple pinions extend the range of gear …
Smooth Operators: Wichita multi-plate clutch technology
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.
Mount Milligan Mill Drives - ABB
SAG mill and two 26 ft ball mills, all made by . The drive systems that enable the mills to operate at benchmark levels of reliability, efficiency and availability were made by ABB, whose solution comprises a 23.5 MW gearless mill drive (GMD) for the SAG mill, and two 13 MW low-speed dual-pinion ring-geared mill drive (RMD) systems for the ...
An electrical impact study between variable speed dual ...
When mill power is between 18 and 20 MW, which is the current manufacturing limit of ring geared mills [2], either a gearless mill drive (GMD) or a ring geared mill with dual pinion motors can be chosen. Selecting between gearless or ring geared design is mostly dependent on size of the mill and power and speed requirements [3].
Grinding circuit for Mount Milligan mine | ABB
1 x 23.5 MW gearless mill drive system (GMD) to power the 40 ft SAG mill ; 2 x 13 MW low-speed dual pinion ring-geared mill drive systems (RMD) to power the plant's 26 ft ball mills; Both drive solutions share many common operation and maintenance features such as frozen charge protection, frozen charge remover, controlled rollback, automatic ...
crown pinion alignment ball mills - SRE Machineries
Gears And Pinion For Ball Mill Ball mill pinion alignment pdf riskmark from common ball mills there is a second type of ball ball mill alignment pdf zenith grinding mills and their dual pinion mill how to align ball mill pinion to drive motor sag mill ball mill ring gear dual pinion drive systems variable speed introduction alignment . Get Price
Full gear unit range for your horizontal mill | FL
Among the different types of horizontal mills used in the mining industry, SAG, AG, rod and ball mills are usually equipped with lateral drives. We offer you a full package of complete drive systems, consisting of girth gears for single or dual drive …
Gearless mill drives - Mining Weekly
GMDs are used on the larger ball and semi-autogenous grinding (SAG) mills, where power transfer through the con- ventional gearbox, pinion and girth gear drivetrain becomes the limiting factor.
Mill drives: the desire for increased power and the ...
For single pinion and dual pinion drives, with 21 MW now a distinct possibility, the probability of pinion changes to a higher mill speed should always be considered when set-ting gear ratios, service factors, and motor power ratings. For gearless drives, motor torque output at the maximum desired operating mill speed and ball charge volume has to
AG mills - Outotec
We are essentially providing up to twice the power transmission of a conventional dual pinion drive. Gearless mill drive (GMD) technology has further expanded the use of large AG 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 ...
large sag and ball mill drive systems
gear drive sag mill vs gearless drive, - fysiozuidlarennl. sag mill dual pinion geared drive Autogenous mills, semi-autogenous mills and ball mills for wet - sag mill dual pinion geared drive,x AEROFALL type dry SAG mills, x Dry grinding ball mills, als industry The grinding mills can be equipped with ring gear pinion drives as well as with the COMBIFLEX® drive The …
Increasing availability through advanced Gearless Drive ...
Figure 1 – Top view of SAG mills with alternative drive options; left side: dual pinion drive including motor, gearbox, pinion and girth gear; right side: gearless ring motor Declining ore grades, leading to increased material transport and plant throughput requirements, are one of the
STEPPING FORWARD: USING VARIABLE SPEED DRIVES FOR ...
developed for single pinion or dual pinion applications depending on the power of the driven mill. High speed solution ... General overview of the high speed and low speed drive system solutions for gear driven mills (single or dual pinion) (Ingeteam). ... The breakage rate function shape of the SAG mill is largely governed by the mill load ...
Smooth Operators
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.
slip ring induction motor for sag mills
Slip ring Wound Rotor Induction Motor WRIM liquid rheostat starter supplied by others For Dual or Single Pinion Configuration of Ball and SAG Mills the Service Online Appendix B Soft StArter ApplicAtion conSiderAtionS Appendix Stellar 174 SR55 Series Soft Starter User Manual – 1st Ed Rev D – 08 03 2018 Ball mill 30–50
Gears And Pinion For Ball Mill | Crusher Mills, Cone ...
how to align ball mill pinion to drive motor-[crusher and mill] Ring-geared mill drives Single and dual pinion. SAG and ball mill applications and are able … Now, the driving system of grinding ball mill is the gear drive. …
News | ABB appointed to modernise Zijin Mining Groups ...
ABB's solution provides dual pinion mill drives, frozen charge detection, controlled roll back, automatic positioning, variable speed and cascade monitoring functionalities. The dual pinion mill drive is a variable speed technology which will effect low mechanical stress impact on the pinion and ring gear by realizing precise load sharing ...
SAG Milling in Australia -Revised Submission
pinion systems to 8 MW per pinion and dual motor systems with quadruple pinions extend 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 ...
VFD Industry Requirements: Mining and Minerals - Drive ...
— Ball mills, semi-autogenous (SAG) mills, high pressure grinding rolls (HPGR), ring-geared mill drives (RMD) and gearless mill drives (GMD) — Ball/SAG mills with up to 8'000 kW per motor, typically geared solutions ('high-speed') using asynchronous motors with 6-8 poles and rated speed 1'000 – 1'800 rpm