It enables gear driven mill power all the way up to 32 MW, territory that could previously only be filled with a gearless drive. This is because it is a quad, not a standard dual pinion solution. In the mining industry there are no installations yet, but the fundamental open gear design philosophy is unchanged from that of a dual pinion drive.
drive application is a dual-pinion SAG mill driven by two 5,000 kW wound rotor induction motors (WRIM). Two TMdrive- 10SPRs control motor speed by recovering rotor current …
Buy Unused Fl 36' X 24' (11m X 7.3m) Dual Pinion Sag Mill With 2 Abb 9,000 Kw (12,069 Hp) Vfd Motors For Total Power Of 18,000 Kw (24,138 Hp) from A.M. King Industries. Request a quote online today.
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 …
Conga: The world's first 42-foot diameter 28 MW gearless SAG mill ( en - pdf - Technical publication ) Copper Mountain: Overview on the grinding mills and their dual pinion mill drives ( en - pdf - Technical publication ) Insurability of large gearless mill drives ( en - pdf - Technical publication )
2010 - The largest dual pinion drive was sold by FL with an 11.0 m (36 ft) diameter SAG mill in ... AG/SAG mills are available in various types of basic configurations. The North American style
Going from a dual pinion to a quad pinion arrangement is in fact the natural progression to a robust, innovative mechanical solution allowing our customers to move forward with …
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 ...
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 …
Singe train GMD driven options were discarded early in the assessment in favour of a dual train pinion driven SAG mills due to the added flexibility, reduced start up risk and the increased total SAG mill power available. Table 2 summarises the criteria used for …
WEG announced that it has successfully tested its new solution of low speed synchronous motors driven by frequency inverters for mills with dual pinions, at its testing facility in …
The test and study work showed that a single line 42 ft SAG mill circuit gave the most favorable project economics in comparison to an equivalently powered single line 40 ft SAG mill circuit. ... Variable speed drive solutions dedicated to single or dual pinion ring-geared mills offer significant advantages over conventional drives due to their ...
Our GMD eliminates all mechanical components of a conventional mill drive system, such as ring-gear, pinion, gearbox, coupling, motor shaft and motor bearings: By mounting the rotor poles directly onto the mill, the …
Search a huge mining inventory of used ball, pebble, sag, and grinder mills for sale today! Allis-Chalmers, , Hardinge and more! All sizes and horse powers.
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]. Recently, however, adjustability of Ball mill speed has been given more consideration. Also, to maximize throughput, the …
Single-pinion and dual-pinion fixed-speed gear drives offer a relatively simple design. However, process flexibility and optimization ... SAG mills and about 15 rpm for smaller ball mills. Figure 3. Pole mounting during installation of ringmotor Cycloconverter The cycloconverter (Fig. 4) belongs to the group of line- ...
Copper Mountain has installed on all three mills, the new state-of-the art dual pinion mill drives. All the inherent operation and maintenance features of this drive …
The primary crushed feed is conveyed to the SAG mill feed chute. Lime is dosed to the SAG mill feed conveyor from two lime silos. The SAG mill is a single Outotec Ø 10.97 m x 5.79 m EGL (36' x 19') mill equipped with a 15 MW dual pinion drive (7.5 MW per drive). The SAG mill discharges over a single 3.6 m x 8.5 m vibrating screen
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 …
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 …
An electrical impact study between variable speed dual pinion mills and gearless mill drives. Abstract: Conventional mining process circuits use both Semi-Autogenous …
ABB's supply scope included four dual-pinion low-speed mill drive systems for two SAG mills and two ball mills, each consisting of two synchronous motors, converter transformers and ACS6000 frequency converters. These include active rectifier units allowing the mill drives to achieve a power factor of 0.90 leading.
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.
dual pinion solutions were developed to power the mills. However, realization of the dual pinion solution was only possible when load could be evenly shared between the two pinions. When mill diameter and mill power became again increased, only the Gearless Mill Drive (GMD) could be envisaged to cover this requirement above 10 MW.
This puts the application in the realm of dual motor, dual pinion installations. Power demand of 16 – 28 MW. This puts the application in the realm of a single mill with gearless drive. Power demand of more than 28 MW. ... The SAG mill was also designed with a high maximum ball charge (18%) so that sufficient media was provided when 9 ...
Until now, gear-driven solutions for large SAG and ball mills have been limited to 18 MW. In the past, grinding mills operating between 18 MW and 28 MW required a large electrical wrap-around motor, known as a …
13 ft diameter Allis Chalmers grinding mill configurable as ball or SAG mill up to 28 feet in length, - Shell cut into multiple sections for transport, can be fit to desired length, - Falk Gear single helical bull gear: ... Unused 22' diameter x 36.5' long FL Ball Mills, with dual pinion motor drives. s fabricated shell, cast heads, ...
We provide SAG and AG Mills up to 12.2m in diameter. Our mills use conventional geared drives for transmitting up to 18,000 kW of power by use of a twin pinion system. We've been producing the highest quality …
UNUSED FL 26' x 43' (8m x 13m) Dual Pinion Ball Mill with 2 ABB 9,000 kW (12,069 HP) Motors for Total Power of 18,000 kW (24,138 HP).. View Details Contact Seller Request Price. Expand. ... Sag mill, manufactured by Allis Minerals (Svedala), 30' diameter x 7' long, dry grind, driven by 4000 HP motor, 200 RPM, 3300 v, ...
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 ...