Pudong new district, Shanghai, China.
The SAG mills are fitted with a dual pinion drive system and are driven by a variable-speed drive comprised of a SER hyper-synchronous drive. The SAG mills are 11 m (36') dia, 7.3 m EGL (26.5'). Each SAG mill is driven by two 8 MW motors.
Copper Mountain's concentrator was commissioned in May 2011. The circuit consists of a 34' x 20' EGL SAG mill, a Raptor 900 pebble crusher and two 24' x 39'6" ball mills. Each mill is equipped with a 2 x 8500HP dual pinion drive system. The plant was designed to process 1585 h mtpof SAG feed. From
There are a number of mills in the cement industry in Europe, which have operated for more than three years with this type of drive. Reversible rotation is often used to obtain balanced wear on mill liners and lifters, to reduce the number of mill shutdowns. This feature can easily be incorporated into dual pinion or gearless drives.
Sag Mill Drives Girth Gears At 18000 Hp Motors. Pinion sag mill lavitrine-une-collection.Sag mill dual pinion geared drive.Sag mill dual pinion geared drive dual pinion driveingle and dual pinion mill drives if we concentrate on the single and dual pinion configurations we can see that these two configurations can be powered by low speed motors connected directly to the pinions driving the ...
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
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.
Mill load sharing – Maintains equal torques on dual pinion mills throughout the whole speed range. Controlled rollback – Prevents backlash and reduces downtime. Mill power ride through – Keeps the mill operating even under voltage dips. Over-duty cycle – Avoids unexpected downtime if …
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 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.
design mill speed, and the maximum design ball charge volume (Barratt, 1989). 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 …
These mills are typically powered using electricity and depending on the required power have different configurations such as central drive, single pinion, dual pinion and gearless mechanical set-up. AG and SAG mills are extensively used in the mining industry for extracting minerals such as metals, oil shale, limestone, rock salt, coal ...
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.
By mill we refer to Ball Mills, Rod Mills and SAG Mills. Anything gear and pinion really. The discharge end of the mill; For the operator this only becomes a problem should the bolts that hold the liners in begin to leak water and ground rock. This combination is called SLURRY. If this slurry gets onto the face of the bull gear it will act like ...
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 ...
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 ...
Figure 1 – 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 particle size distribution and mill speed. The feed in the mill contains fractions of ore that serves as the ...
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 SAG milling allowing Outotec to produce the world's largest SAG mill of 42' in diameter drawing power at 28 MW.
LG A mill power equation for SAG mills. Minerals and Metallurgical Processing. Feb 1990 pp57-62. Gross power No load power Net power drawn by the charge (8.13) The net power is calculated from Net power KD2.5L e! c./ Watts (8.14) In equation 8.14, D is the diameter inside the mill liners and Le is the effective length of the mill including the ...
A SAG mill requirement might be 225-250% torque based on Full Load Motor Torque (FLMT). This is the amount of torque the drive motor can produce on a temporary basis during start up. ... 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 ...
UNUSED FL 36' x 24' (11m x 7.3m) Dual Pinion SAG Mill with 2 ABB 9,000 kW (12,069 HP) Motors for Total Power of 18,000 kW (24,138 HP) United States Click to Request Price
ABB has commissioned an upgrade to Vale's existing Clarabelle dual pinion semi-autogenous (SAG) mill (Fig. 1). The mill is used to reduce the size of the ore at the company's nickel and copper mines in the Sudbury area, Ontario. The project was …
The modernization project includes two 8 MW SAG (semi-autogenous) mills and two 9.7 MW ball mills with dual pinion drives. The new drive systems are replacing the existing synchronous motors and direct converters for the SAG mills and the drive systems of the ball mills, which were installed by a different manufacturer.
how to set backlash ball mills. SAG mill ball mill ring gear dual pinion drive systems variable speed the inching mode in the ABB drives are currently set to turn the SAG mill at about 10 of backlash phenomenon occurs between the pinions and ring gear. Get a Quote Send Message
The grinding process with one 34' x 20' SAG mill and two 24' x 39.5' ball mills will be briefly discussed. All three mills are gear driven by a ring gear, dual pinion and two low speed synchronous motors. Copper Mountain has installed on all three mills, the new state-of-the art dual pinion mill drives.
ONTARIO – ABB, the leading power and automation technology group, has commissioned an upgrade to Vale's existing Clarabelle dual pinion semi-autogenous (SAG) mill.The project was completed on-time and on-budget with an excellent safety record. The Clarabelle mill beneficiates nickel-copper ore from various sources and companies and to produce a nickel-copper …
UNUSED FL 36' x 24' (11m x 7.3m) Dual Pinion Sag Mill with 2 ABB 9,000 kW (12,069 HP) Motors for Total Power of 18,000 kW (24,138 HP) Inventory ID: 6C-HM03. Inventory ID: 6C-HM03. Manufacturer: FL.
largest gear driven sag mill in belgium. reliable drive system for SAG mills. Early SAG mills had a diameter of about 32', later increasing to 34, 36, 38 and 40'. At the same time the mill volume also increased. Typically a SAG mill has a much largerpared to its length. Yet the SAG mill of Newmont's Yanacocha mine in Peru is a single stage mill ...
36' x 24' Fl, Dual Pinion Sag Mill, 2 Abb 9000 KW (12069 HP) Motors For Total Power Of 18, 000 Kw (24138 HP), new ...
The motors are being applied in pairs to SAG and ball mills that operate through dual pinion drives supplying power to each mill. Historically, WEG says the customer was facing problems for a number of different reasons such as mechanical fits, …
duel drive motor in ball mill zcrusher. The grinding circuit consists of a SAG mill and two ball mills all dual pinion Typically a dedicated inching drive will turn the mill at a speed of about 015rpm Read More crushers kilns and dryers used in the global miningDual Planetary Ball Mill lab mills Double planetary structure of dual planetary ball mill realizes movement of small disk
Inventory ID: 6C-HM03. UNUSED FL 36' x 24' (11m x 7.3m) Dual Pinion SAG Mill with 2 ABB 9,000 kW (12,069 HP) Motors for Total Power of 18,000 kW (24,138 HP)
Dual pinion sag mill huisarts vansichemnl. Ball Mill Failure Modes stundengebet SAG mill, ball mill, ring gear, dual pinion, drive systems, variable Chat With Sal Chat With Sal ball mill failure modes OptonClinic Ball Mill Ball mills are used primary for single stage fine grinding, regrinding, and as the second stage in two stage grinding circuits According to the need of Chat
An electrical impact study between variable speed dual pinion mills and gearless mill drives Abstract: Conventional mining process circuits use both Semi-Autogenous Grinding (SAG) and Ball mills. It is very common that the SAG mills are operated with adjustable frequency drives (AFDs) and the Ball mills are operated at fixed speed [1].
Feed to the SAG mills is via a rock-box type feed chute on a cart. The mills discharge on to trommel screens with a bucket wheel to remove the oversize.The ball mills are 22' x 36.5' (36' EGL) with 12,500 HP drives. The drive arrangements are dual pinion through pneumatic clutches. The fixed speed mills are driven by low speed synchronous ...
dual pinion sag mill Mount Milligan mill drives Sophisticated grinding technology and services at work, SAG mill and two 26 ft ball mills,, MW low-speed dual-pinion ring-geared mill. Live Chat » The Gulin product line, consisting of more than 30 machines, sets the standard for our industry We plan to help you meet your needs with our equipment ...
MUKTI is a leading and pioneering enterprise with the most advanced international level in R&D ...